VideoLAN Wiki - User contributions [en]

Lossless and lossy

2007-10-12T13:51:13Z

Tom W.M.: reworked

'''Lossless''' is a way of compressing data which is fully reversible -- e.g., does not throw away data. A losslessly compressed file can be used to create an exact copy of the source file.

'''Lossy''' is the opposite of lossless. A certain amount of data is discarded; how much is usually dependent upon a quality or bitrate setting of the codec. This makes the file (or stream) much smaller that lossless compression, but reduces the [[quality]]. It is impossible to [[transcode]] from one lossy format to another without further degrading quality.

==Lossless Codecs==
* [[WAVE]] (WAVE is technically a container format, but usually contains lossless PCM audio.)
* [[FLAC]]

==Lossy Codecs==
* [[MP3]]
* [[Vorbis]]
* [[AAC]]
* [[AC3]]
* [[WMA]]
* [[Speex]]
* All [[codecs|video codecs]]

[[Category:Glossary]]

WAVE

2007-10-12T13:33:36Z

Tom W.M.:

{{mux|id=wav|encoder=y}}

'''WAVE''' is a way of storing audio, which is normally uncompressed. It is based on [[RIFF]].

== Accepted audio codecs ==
* [[dummy]]: Uncompressed audio of various types, based on storing integer values of the amplitude of the sound (see [[wikipedia:PCM|PCM]]).
* [[fl32]]: Floating point 32-bit uncompressed audio, also based on PCM but allowing the values to be stored as floating point data types. This can give better quality audio when the sound becomes quiet.

== Souce code ==
{{file|modules/mux/wav.c|output muxer}}
{{file|modules/demux/wav.c|input demuxer}}

Dictionary

2007-10-12T13:22:54Z

Tom W.M.: /* [http://mydatapages.com/deinterlacing.html Deinterlacing] */ removed dead link

__NOTOC__
Some terms used in the area of Audio/Video and their meaning.

{{stub}}

===[[Aspect Ratio]]===
The ratio of width to height of a video.

===[[Bitrate]]===
The number of bits of data to be played per second.

===[[Chroma]]===
Greek for color, the part of a video file or signal that encodes the color portion.

===[[Codec]]===
A part of the program which understands a type of video or audio (short for '''Co'''mpression/'''Dec'''ompression). DivX and Theora are examples of video codecs; MP3 and Vorbis are audio codecs. The output stream produced when a codec to audio or video is generally "muxed" into a container format, such as AVI or Ogg. As certain codecs are often associated with certain container formats, the name of the container is often used to imply the codec, such as "Ogg", which usually refers to a Vorbis stream in an Ogg container.

===[[Decode]]===
To understand and play a file, VideoLAN needs to decode it. It does this with a decoder. See codec.

===[[Deinterlacing]]===
Deinterlacing is the process of converting interlaced video (a sequence of fields) into a non-interlaced form (a sequence of frames). This is a fundamentally impossible process that must always produce some image degradation, since it ideally requires "temporal interpolation" which involves guessing the movement of every object in the image and applying motion correction to every object.

===[[Demuxing]]===

===[[Encode]]===

===[[MPEG-ES|ES]]===
An '''E'''lementry '''S'''tream, a single channel of audio, video or subtitles (without a container).

===[[FourCC]]===

===[[Framerate]]===
The number of frames of video displayed (or encoded to be displayed) per unit time, usually expressed in frames per second (fps) or Hertz (Hz). One Hertz is equivilant to one frame per second.

===[[IDCT]]===

===[[Keyframe]]===
A [[frame]] of video which is stored as a complete image, not just as the changes from the previous image.

===[[Lossless and Lossy|Lossless]]===

===[[Lossless and Lossy|Lossy]]===

===[[Motion Compensation]]===
Part of the video compression process. New frames normally store changes in the image since the previous frame. If the scene is moving as a whole (such as panning), motion compensation moves the reference frame to line up with the new frame. This means that there are less changes to be stored since the previous frame, and so less data needs to be stored.

===[[Muxing]]===
The process of encapsulating an encoded stream (see codec) into a container format, such as AVI, Ogg, or Matroska.

===[[Overlay]]===
Displaying an image on top of the video

===[[Packetizing]]===

===[[Post Processing]]===
Post processing attempts to increase the quality of a decoded stream. In VLC media player, it will reduce blockiness for low-bitrate video streams, at the expense of smoothing out some detail. This feature is not available for all codecs that VLC supports.

===[[PCR]] (Program Clock Reference)===

===[[MPEG-PS|PS]]===
Abbreviation for '''P'''rogram '''S'''tream.

===[[PTS]]===

===[[Sample rate]]===
Usually used with audio, the frequency at which a signal is digitally sampled, usually expressed in Hertz (Hz) or kiloHertz (kHz). One Hertz is equivilant to one sample per second, One kiloHertz is a thousand (1000) Hertz.

===[[Transcode]]===
Transcoding is changing the format of a file. This can be for the purpose of changing the audio or video's bitrate, codec, or other attributes, to reduce disk usage or for compatibility with a certain program/device.

It is important to note that transcoding can be highly detrimental to quality when dealing with lossy codecs, particularly for video. This is because the second time a stream is encoded lossily the codec has less information to work with, causing it to produce a cruder approximation of the original. As with many other quality issues, this problem can be worked around by increasing the bitrate, though some quality loss (as well as possible re-encoding of the previous codec's artifacts) will inevitably occur.

Also note that, provided both container formats support the codec, transcoding is not necessary to switch container formats. For example, an XviD video stream in an AVI file can be losslessly remuxed into an Ogg file.

===[[MPEG-TS|TS]]===
Abbreviation for '''T'''ransport '''S'''tream, as in [[MPEG-TS]].

===[[Transport Stream]]===
See [[MPEG-TS]]

Dictionary

2007-10-12T13:17:56Z

Tom W.M.: /* PCR */

__NOTOC__
Some terms used in the area of Audio/Video and their meaning.

{{stub}}

===[[Aspect Ratio]]===
The ratio of width to height of a video.

===[[Bitrate]]===
The number of bits of data to be played per second.

===[[Chroma]]===
Greek for color, the part of a video file or signal that encodes the color portion.

===[[Codec]]===
A part of the program which understands a type of video or audio (short for '''Co'''mpression/'''Dec'''ompression). DivX and Theora are examples of video codecs; MP3 and Vorbis are audio codecs. The output stream produced when a codec to audio or video is generally "muxed" into a container format, such as AVI or Ogg. As certain codecs are often associated with certain container formats, the name of the container is often used to imply the codec, such as "Ogg", which usually refers to a Vorbis stream in an Ogg container.

===[[Decode]]===
To understand and play a file, VideoLAN needs to decode it. It does this with a decoder. See codec.

===[http://mydatapages.com/deinterlacing.html Deinterlacing]===
Deinterlacing is the process of converting interlaced video (a sequence of fields) into a non-interlaced form (a sequence of frames). This is a fundamentally impossible process that must always produce some image degradation, since it ideally requires "temporal interpolation" which involves guessing the movement of every object in the image and applying motion correction to every object.

===[[Demuxing]]===

===[[Encode]]===

===[[MPEG-ES|ES]]===
An '''E'''lementry '''S'''tream, a single channel of audio, video or subtitles (without a container).

===[[FourCC]]===

===[[Framerate]]===
The number of frames of video displayed (or encoded to be displayed) per unit time, usually expressed in frames per second (fps) or Hertz (Hz). One Hertz is equivilant to one frame per second.

===[[IDCT]]===

===[[Keyframe]]===
A [[frame]] of video which is stored as a complete image, not just as the changes from the previous image.

===[[Lossless and Lossy|Lossless]]===

===[[Lossless and Lossy|Lossy]]===

===[[Motion Compensation]]===
Part of the video compression process. New frames normally store changes in the image since the previous frame. If the scene is moving as a whole (such as panning), motion compensation moves the reference frame to line up with the new frame. This means that there are less changes to be stored since the previous frame, and so less data needs to be stored.

===[[Muxing]]===
The process of encapsulating an encoded stream (see codec) into a container format, such as AVI, Ogg, or Matroska.

===[[Overlay]]===
Displaying an image on top of the video

===[[Packetizing]]===

===[[Post Processing]]===
Post processing attempts to increase the quality of a decoded stream. In VLC media player, it will reduce blockiness for low-bitrate video streams, at the expense of smoothing out some detail. This feature is not available for all codecs that VLC supports.

===[[PCR]] (Program Clock Reference)===

===[[MPEG-PS|PS]]===
Abbreviation for '''P'''rogram '''S'''tream.

===[[PTS]]===

===[[Sample rate]]===
Usually used with audio, the frequency at which a signal is digitally sampled, usually expressed in Hertz (Hz) or kiloHertz (kHz). One Hertz is equivilant to one sample per second, One kiloHertz is a thousand (1000) Hertz.

===[[Transcode]]===
Transcoding is changing the format of a file. This can be for the purpose of changing the audio or video's bitrate, codec, or other attributes, to reduce disk usage or for compatibility with a certain program/device.

It is important to note that transcoding can be highly detrimental to quality when dealing with lossy codecs, particularly for video. This is because the second time a stream is encoded lossily the codec has less information to work with, causing it to produce a cruder approximation of the original. As with many other quality issues, this problem can be worked around by increasing the bitrate, though some quality loss (as well as possible re-encoding of the previous codec's artifacts) will inevitably occur.

Also note that, provided both container formats support the codec, transcoding is not necessary to switch container formats. For example, an XviD video stream in an AVI file can be losslessly remuxed into an Ogg file.

===[[MPEG-TS|TS]]===
Abbreviation for '''T'''ransport '''S'''tream, as in [[MPEG-TS]].

===[[Transport Stream]]===
See [[MPEG-TS]]

Dictionary

2007-10-12T13:17:12Z

Tom W.M.:

__NOTOC__
Some terms used in the area of Audio/Video and their meaning.

{{stub}}

===[[Aspect Ratio]]===
The ratio of width to height of a video.

===[[Bitrate]]===
The number of bits of data to be played per second.

===[[Chroma]]===
Greek for color, the part of a video file or signal that encodes the color portion.

===[[Codec]]===
A part of the program which understands a type of video or audio (short for '''Co'''mpression/'''Dec'''ompression). DivX and Theora are examples of video codecs; MP3 and Vorbis are audio codecs. The output stream produced when a codec to audio or video is generally "muxed" into a container format, such as AVI or Ogg. As certain codecs are often associated with certain container formats, the name of the container is often used to imply the codec, such as "Ogg", which usually refers to a Vorbis stream in an Ogg container.

===[[Decode]]===
To understand and play a file, VideoLAN needs to decode it. It does this with a decoder. See codec.

===[http://mydatapages.com/deinterlacing.html Deinterlacing]===
Deinterlacing is the process of converting interlaced video (a sequence of fields) into a non-interlaced form (a sequence of frames). This is a fundamentally impossible process that must always produce some image degradation, since it ideally requires "temporal interpolation" which involves guessing the movement of every object in the image and applying motion correction to every object.

===[[Demuxing]]===

===[[Encode]]===

===[[MPEG-ES|ES]]===
An '''E'''lementry '''S'''tream, a single channel of audio, video or subtitles (without a container).

===[[FourCC]]===

===[[Framerate]]===
The number of frames of video displayed (or encoded to be displayed) per unit time, usually expressed in frames per second (fps) or Hertz (Hz). One Hertz is equivilant to one frame per second.

===[[IDCT]]===

===[[Keyframe]]===
A [[frame]] of video which is stored as a complete image, not just as the changes from the previous image.

===[[Lossless and Lossy|Lossless]]===

===[[Lossless and Lossy|Lossy]]===

===[[Motion Compensation]]===
Part of the video compression process. New frames normally store changes in the image since the previous frame. If the scene is moving as a whole (such as panning), motion compensation moves the reference frame to line up with the new frame. This means that there are less changes to be stored since the previous frame, and so less data needs to be stored.

===[[Muxing]]===
The process of encapsulating an encoded stream (see codec) into a container format, such as AVI, Ogg, or Matroska.

===[[Overlay]]===
Displaying an image on top of the video

===[[Packetizing]]===

===[[Post Processing]]===
Post processing attempts to increase the quality of a decoded stream. In VLC media player, it will reduce blockiness for low-bitrate video streams, at the expense of smoothing out some detail. This feature is not available for all codecs that VLC supports.

===[[PCR]]===

===[[MPEG-PS|PS]]===
Abbreviation for '''P'''rogram '''S'''tream.

===[[PTS]]===

===[[Sample rate]]===
Usually used with audio, the frequency at which a signal is digitally sampled, usually expressed in Hertz (Hz) or kiloHertz (kHz). One Hertz is equivilant to one sample per second, One kiloHertz is a thousand (1000) Hertz.

===[[Transcode]]===
Transcoding is changing the format of a file. This can be for the purpose of changing the audio or video's bitrate, codec, or other attributes, to reduce disk usage or for compatibility with a certain program/device.

It is important to note that transcoding can be highly detrimental to quality when dealing with lossy codecs, particularly for video. This is because the second time a stream is encoded lossily the codec has less information to work with, causing it to produce a cruder approximation of the original. As with many other quality issues, this problem can be worked around by increasing the bitrate, though some quality loss (as well as possible re-encoding of the previous codec's artifacts) will inevitably occur.

Also note that, provided both container formats support the codec, transcoding is not necessary to switch container formats. For example, an XviD video stream in an AVI file can be losslessly remuxed into an Ogg file.

===[[MPEG-TS|TS]]===
Abbreviation for '''T'''ransport '''S'''tream, as in [[MPEG-TS]].

===[[Transport Stream]]===
See [[MPEG-TS]]

Dictionary

2007-10-12T13:16:43Z

Tom W.M.: hyphenated MPEG TS

__NOTOC__
Some terms used in the area of Audio/Video and their meaning.

{{stub}}

===[[Aspect Ratio]]===
The ratio of width to height of a video.

===[[Bitrate]]===
The number of bits of data to be played per second.

===[[Chroma]]===
Greek for color, the part of a video file or signal that encodes the color portion.

===[[Codec]]===
A part of the program which understands a type of video or audio (short for '''Co'''mpression/'''Dec'''ompression). DivX and Theora are examples of video codecs; MP3 and Vorbis are audio codecs. The output stream produced when a codec to audio or video is generally "muxed" into a container format, such as AVI or Ogg. As certain codecs are often associated with certain container formats, the name of the container is often used to imply the codec, such as "Ogg", which usually refers to a Vorbis stream in an Ogg container.

===[[Decode]]===
To understand and play a file, VideoLAN needs to decode it. It does this with a decoder. See codec.

===[http://mydatapages.com/deinterlacing.html Deinterlacing]===
Deinterlacing is the process of converting interlaced video (a sequence of fields) into a non-interlaced form (a sequence of frames). This is a fundamentally impossible process that must always produce some image degradation, since it ideally requires "temporal interpolation" which involves guessing the movement of every object in the image and applying motion correction to every object.

===[[Demuxing]]===

===[[Encode]]===

===[[MPEG-ES|ES]]===
An '''E'''lementry '''S'''tream, a single channel of audio, video or subtitles (without a container).

===[[FourCC]]===

===[[Framerate]]===
The number of frames of video displayed (or encoded to be displayed) per unit time, usually expressed in frames per second (fps) or Hertz (Hz). One Hertz is equivilant to one frame per second.

===[[IDCT]]===

===[[Keyframe]]===
A [[frame]] of video which is stored as a complete image, not just as the changes from the previous image.

===[[Lossless and Lossy|Lossless]]===

===[[Lossless and Lossy|Lossy]]===

===[[Motion Compensation]]===
Part of the video compression process. New frames normally store changes in the image since the previous frame. If the scene is moving as a whole (such as panning), motion compensation moves the reference frame to line up with the new frame. This means that there are less changes to be stored since the previous frame, and so less data needs to be stored.

===[[Muxing]]===
The process of encapsulating an encoded stream (see codec) into a container format, such as AVI, Ogg, or Matroska.

===[[Overlay]]===
Displaying an image on top of the video

===[[Packetizing]]===

===[[Post Processing]]===
Post processing attempts to increase the quality of a decoded stream. In VLC media player, it will reduce blockiness for low-bitrate video streams, at the expense of smoothing out some detail. This feature is not available for all codecs that VLC supports.

===[[PCR]]===

===[[MPEG-PS|PS]]===
Abbreviation for '''P'''rogram '''S'''tream.

===[[PTS]]===

===[[Sample rate]]===
Usually used with audio, the frequency at which a signal is digitally sampled, usually expressed in Hertz (Hz) or kiloHertz (kHz). One Hertz is equivilant to one sample per second, One kiloHertz is a thousand (1000) Hertz.

===[[Transcode]]===
Transcoding is changing the format of a file. This can be for the purpose of changing the audio or video's bitrate, codec, or other attributes, to reduce disk usage or for compatibility with a certain program/device.

It is important to note that transcoding can be highly detrimental to quality when dealing with lossy codecs, particularly for video. This is because the second time a stream is encoded lossily the codec has less information to work with, causing it to produce a cruder approximation of the original. As with many other quality issues, this problem can be worked around by increasing the bitrate, though some quality loss (as well as possible re-encoding of the previous codec's artifacts) will inevitably occur.

Also note that, provided both container formats support the codec, transcoding is not necessary to switch container formats. For example, an XviD video stream in an AVI file can be losslessly remuxed into an Ogg file.

===[[MPEG-TS|TS]]===
Abbreviation for '''T'''ransport '''S'''tream, as in [[MPEG-TS]].

===[[Transport Stream]]===

Dictionary

2007-10-12T13:15:55Z

Tom W.M.: added links to lossless and lossy

__NOTOC__
Some terms used in the area of Audio/Video and their meaning.

{{stub}}

===[[Aspect Ratio]]===
The ratio of width to height of a video.

===[[Bitrate]]===
The number of bits of data to be played per second.

===[[Chroma]]===
Greek for color, the part of a video file or signal that encodes the color portion.

===[[Codec]]===
A part of the program which understands a type of video or audio (short for '''Co'''mpression/'''Dec'''ompression). DivX and Theora are examples of video codecs; MP3 and Vorbis are audio codecs. The output stream produced when a codec to audio or video is generally "muxed" into a container format, such as AVI or Ogg. As certain codecs are often associated with certain container formats, the name of the container is often used to imply the codec, such as "Ogg", which usually refers to a Vorbis stream in an Ogg container.

===[[Decode]]===
To understand and play a file, VideoLAN needs to decode it. It does this with a decoder. See codec.

===[http://mydatapages.com/deinterlacing.html Deinterlacing]===
Deinterlacing is the process of converting interlaced video (a sequence of fields) into a non-interlaced form (a sequence of frames). This is a fundamentally impossible process that must always produce some image degradation, since it ideally requires "temporal interpolation" which involves guessing the movement of every object in the image and applying motion correction to every object.

===[[Demuxing]]===

===[[Encode]]===

===[[MPEG-ES|ES]]===
An '''E'''lementry '''S'''tream, a single channel of audio, video or subtitles (without a container).

===[[FourCC]]===

===[[Framerate]]===
The number of frames of video displayed (or encoded to be displayed) per unit time, usually expressed in frames per second (fps) or Hertz (Hz). One Hertz is equivilant to one frame per second.

===[[IDCT]]===

===[[Keyframe]]===
A [[frame]] of video which is stored as a complete image, not just as the changes from the previous image.

===[[Lossless and Lossy|Lossless]]===

===[[Lossless and Lossy|Lossy]]===

===[[Motion Compensation]]===
Part of the video compression process. New frames normally store changes in the image since the previous frame. If the scene is moving as a whole (such as panning), motion compensation moves the reference frame to line up with the new frame. This means that there are less changes to be stored since the previous frame, and so less data needs to be stored.

===[[Muxing]]===
The process of encapsulating an encoded stream (see codec) into a container format, such as AVI, Ogg, or Matroska.

===[[Overlay]]===
Displaying an image on top of the video

===[[Packetizing]]===

===[[Post Processing]]===
Post processing attempts to increase the quality of a decoded stream. In VLC media player, it will reduce blockiness for low-bitrate video streams, at the expense of smoothing out some detail. This feature is not available for all codecs that VLC supports.

===[[PCR]]===

===[[MPEG-PS|PS]]===
Abbreviation for '''P'''rogram '''S'''tream.

===[[PTS]]===

===[[Sample rate]]===
Usually used with audio, the frequency at which a signal is digitally sampled, usually expressed in Hertz (Hz) or kiloHertz (kHz). One Hertz is equivilant to one sample per second, One kiloHertz is a thousand (1000) Hertz.

===[[Transcode]]===
Transcoding is changing the format of a file. This can be for the purpose of changing the audio or video's bitrate, codec, or other attributes, to reduce disk usage or for compatibility with a certain program/device.

It is important to note that transcoding can be highly detrimental to quality when dealing with lossy codecs, particularly for video. This is because the second time a stream is encoded lossily the codec has less information to work with, causing it to produce a cruder approximation of the original. As with many other quality issues, this problem can be worked around by increasing the bitrate, though some quality loss (as well as possible re-encoding of the previous codec's artifacts) will inevitably occur.

Also note that, provided both container formats support the codec, transcoding is not necessary to switch container formats. For example, an XviD video stream in an AVI file can be losslessly remuxed into an Ogg file.

===[[MPEG-TS|TS]]===
Abbreviation for '''T'''ransport '''S'''tream, as in MPEG TS.

===[[Transport Stream]]===

FourCC

2007-10-12T13:12:11Z

Tom W.M.: reworked

A FourCC -- also spelled FOURCC or fourcc -- is a 4 byte identifier which specifies the format of a video stream.

Every codec has its own unique FourCC. Commonly, each byte corresponds to a printable character in the [http://en.wikipedia.org/wiki/ASCII ASCII character set], making the sequence human-readable.

This is very useful for determining whether {{VLC}} can decode a video stream. For audio streams, a [[TwoCC]] is used.

Good lists of FourCC can be found here:

* http://abcavi.kibi.ru/fourcc.php
* http://www.fourcc.org/codecs.php
* http://wiki.multimedia.cx/index.php?title=FourCC

[[Category:Glossary]]

Dictionary

2007-10-12T12:59:30Z

Tom W.M.: /* Muxing */

__NOTOC__
Some terms used in the area of Audio/Video and their meaning.

{{stub}}

===[[Aspect Ratio]]===
The ratio of width to height of a video.

===[[Bitrate]]===
The number of bits of data to be played per second.

===[[Chroma]]===
Greek for color, the part of a video file or signal that encodes the color portion.

===[[Codec]]===
A part of the program which understands a type of video or audio (short for '''Co'''mpression/'''Dec'''ompression). DivX and Theora are examples of video codecs; MP3 and Vorbis are audio codecs. The output stream produced when a codec to audio or video is generally "muxed" into a container format, such as AVI or Ogg. As certain codecs are often associated with certain container formats, the name of the container is often used to imply the codec, such as "Ogg", which usually refers to a Vorbis stream in an Ogg container.

===[[Decode]]===
To understand and play a file, VideoLAN needs to decode it. It does this with a decoder. See codec.

===[http://mydatapages.com/deinterlacing.html Deinterlacing]===
Deinterlacing is the process of converting interlaced video (a sequence of fields) into a non-interlaced form (a sequence of frames). This is a fundamentally impossible process that must always produce some image degradation, since it ideally requires "temporal interpolation" which involves guessing the movement of every object in the image and applying motion correction to every object.

===[[Demuxing]]===

===[[Encode]]===

===[[MPEG-ES|ES]]===
An '''E'''lementry '''S'''tream, a single channel of audio, video or subtitles (without a container).

===[[FourCC]]===

===[[Framerate]]===
The number of frames of video displayed (or encoded to be displayed) per unit time, usually expressed in frames per second (fps) or Hertz (Hz). One Hertz is equivilant to one frame per second.

===[[IDCT]]===

===[[Keyframe]]===
A [[frame]] of video which is stored as a complete image, not just as the changes from the previous image.

===[[Motion Compensation]]===
Part of the video compression process. New frames normally store changes in the image since the previous frame. If the scene is moving as a whole (such as panning), motion compensation moves the reference frame to line up with the new frame. This means that there are less changes to be stored since the previous frame, and so less data needs to be stored.

===[[Muxing]]===
The process of encapsulating an encoded stream (see codec) into a container format, such as AVI, Ogg, or Matroska.

===[[Overlay]]===
Displaying an image on top of the video

===[[Packetizing]]===

===[[Post Processing]]===
Post processing attempts to increase the quality of a decoded stream. In VLC media player, it will reduce blockiness for low-bitrate video streams, at the expense of smoothing out some detail. This feature is not available for all codecs that VLC supports.

===[[PCR]]===

===[[MPEG-PS|PS]]===
Abbreviation for '''P'''rogram '''S'''tream.

===[[PTS]]===

===[[Sample rate]]===
Usually used with audio, the frequency at which a signal is digitally sampled, usually expressed in Hertz (Hz) or kiloHertz (kHz). One Hertz is equivilant to one sample per second, One kiloHertz is a thousand (1000) Hertz.

===[[Transcode]]===
Transcoding is changing the format of a file. This can be for the purpose of changing the audio or video's bitrate, codec, or other attributes, to reduce disk usage or for compatibility with a certain program/device.

It is important to note that transcoding can be highly detrimental to quality when dealing with lossy codecs, particularly for video. This is because the second time a stream is encoded lossily the codec has less information to work with, causing it to produce a cruder approximation of the original. As with many other quality issues, this problem can be worked around by increasing the bitrate, though some quality loss (as well as possible re-encoding of the previous codec's artifacts) will inevitably occur.

Also note that, provided both container formats support the codec, transcoding is not necessary to switch container formats. For example, an XviD video stream in an AVI file can be losslessly remuxed into an Ogg file.

===[[MPEG-TS|TS]]===
Abbreviation for '''T'''ransport '''S'''tream, as in MPEG TS.

===[[Transport Stream]]===

Dictionary

2007-10-12T12:59:03Z

Tom W.M.: /* Muxing */

__NOTOC__
Some terms used in the area of Audio/Video and their meaning.

{{stub}}

===[[Aspect Ratio]]===
The ratio of width to height of a video.

===[[Bitrate]]===
The number of bits of data to be played per second.

===[[Chroma]]===
Greek for color, the part of a video file or signal that encodes the color portion.

===[[Codec]]===
A part of the program which understands a type of video or audio (short for '''Co'''mpression/'''Dec'''ompression). DivX and Theora are examples of video codecs; MP3 and Vorbis are audio codecs. The output stream produced when a codec to audio or video is generally "muxed" into a container format, such as AVI or Ogg. As certain codecs are often associated with certain container formats, the name of the container is often used to imply the codec, such as "Ogg", which usually refers to a Vorbis stream in an Ogg container.

===[[Decode]]===
To understand and play a file, VideoLAN needs to decode it. It does this with a decoder. See codec.

===[http://mydatapages.com/deinterlacing.html Deinterlacing]===
Deinterlacing is the process of converting interlaced video (a sequence of fields) into a non-interlaced form (a sequence of frames). This is a fundamentally impossible process that must always produce some image degradation, since it ideally requires "temporal interpolation" which involves guessing the movement of every object in the image and applying motion correction to every object.

===[[Demuxing]]===

===[[Encode]]===

===[[MPEG-ES|ES]]===
An '''E'''lementry '''S'''tream, a single channel of audio, video or subtitles (without a container).

===[[FourCC]]===

===[[Framerate]]===
The number of frames of video displayed (or encoded to be displayed) per unit time, usually expressed in frames per second (fps) or Hertz (Hz). One Hertz is equivilant to one frame per second.

===[[IDCT]]===

===[[Keyframe]]===
A [[frame]] of video which is stored as a complete image, not just as the changes from the previous image.

===[[Motion Compensation]]===
Part of the video compression process. New frames normally store changes in the image since the previous frame. If the scene is moving as a whole (such as panning), motion compensation moves the reference frame to line up with the new frame. This means that there are less changes to be stored since the previous frame, and so less data needs to be stored.

===[[Muxing]]===
The process of encapsulating an encoded (see codec) stream into a container format, such as AVI, Ogg, or Matroska.

===[[Overlay]]===
Displaying an image on top of the video

===[[Packetizing]]===

===[[Post Processing]]===
Post processing attempts to increase the quality of a decoded stream. In VLC media player, it will reduce blockiness for low-bitrate video streams, at the expense of smoothing out some detail. This feature is not available for all codecs that VLC supports.

===[[PCR]]===

===[[MPEG-PS|PS]]===
Abbreviation for '''P'''rogram '''S'''tream.

===[[PTS]]===

===[[Sample rate]]===
Usually used with audio, the frequency at which a signal is digitally sampled, usually expressed in Hertz (Hz) or kiloHertz (kHz). One Hertz is equivilant to one sample per second, One kiloHertz is a thousand (1000) Hertz.

===[[Transcode]]===
Transcoding is changing the format of a file. This can be for the purpose of changing the audio or video's bitrate, codec, or other attributes, to reduce disk usage or for compatibility with a certain program/device.

It is important to note that transcoding can be highly detrimental to quality when dealing with lossy codecs, particularly for video. This is because the second time a stream is encoded lossily the codec has less information to work with, causing it to produce a cruder approximation of the original. As with many other quality issues, this problem can be worked around by increasing the bitrate, though some quality loss (as well as possible re-encoding of the previous codec's artifacts) will inevitably occur.

Also note that, provided both container formats support the codec, transcoding is not necessary to switch container formats. For example, an XviD video stream in an AVI file can be losslessly remuxed into an Ogg file.

===[[MPEG-TS|TS]]===
Abbreviation for '''T'''ransport '''S'''tream, as in MPEG TS.

===[[Transport Stream]]===

Dictionary

2007-10-12T12:57:57Z

Tom W.M.: /* Post Processing */

__NOTOC__
Some terms used in the area of Audio/Video and their meaning.

{{stub}}

===[[Aspect Ratio]]===
The ratio of width to height of a video.

===[[Bitrate]]===
The number of bits of data to be played per second.

===[[Chroma]]===
Greek for color, the part of a video file or signal that encodes the color portion.

===[[Codec]]===
A part of the program which understands a type of video or audio (short for '''Co'''mpression/'''Dec'''ompression). DivX and Theora are examples of video codecs; MP3 and Vorbis are audio codecs. The output stream produced when a codec to audio or video is generally "muxed" into a container format, such as AVI or Ogg. As certain codecs are often associated with certain container formats, the name of the container is often used to imply the codec, such as "Ogg", which usually refers to a Vorbis stream in an Ogg container.

===[[Decode]]===
To understand and play a file, VideoLAN needs to decode it. It does this with a decoder. See codec.

===[http://mydatapages.com/deinterlacing.html Deinterlacing]===
Deinterlacing is the process of converting interlaced video (a sequence of fields) into a non-interlaced form (a sequence of frames). This is a fundamentally impossible process that must always produce some image degradation, since it ideally requires "temporal interpolation" which involves guessing the movement of every object in the image and applying motion correction to every object.

===[[Demuxing]]===

===[[Encode]]===

===[[MPEG-ES|ES]]===
An '''E'''lementry '''S'''tream, a single channel of audio, video or subtitles (without a container).

===[[FourCC]]===

===[[Framerate]]===
The number of frames of video displayed (or encoded to be displayed) per unit time, usually expressed in frames per second (fps) or Hertz (Hz). One Hertz is equivilant to one frame per second.

===[[IDCT]]===

===[[Keyframe]]===
A [[frame]] of video which is stored as a complete image, not just as the changes from the previous image.

===[[Motion Compensation]]===
Part of the video compression process. New frames normally store changes in the image since the previous frame. If the scene is moving as a whole (such as panning), motion compensation moves the reference frame to line up with the new frame. This means that there are less changes to be stored since the previous frame, and so less data needs to be stored.

===[[Muxing]]===

===[[Overlay]]===
Displaying an image on top of the video

===[[Packetizing]]===

===[[Post Processing]]===
Post processing attempts to increase the quality of a decoded stream. In VLC media player, it will reduce blockiness for low-bitrate video streams, at the expense of smoothing out some detail. This feature is not available for all codecs that VLC supports.

===[[PCR]]===

===[[MPEG-PS|PS]]===
Abbreviation for '''P'''rogram '''S'''tream.

===[[PTS]]===

===[[Sample rate]]===
Usually used with audio, the frequency at which a signal is digitally sampled, usually expressed in Hertz (Hz) or kiloHertz (kHz). One Hertz is equivilant to one sample per second, One kiloHertz is a thousand (1000) Hertz.

===[[Transcode]]===
Transcoding is changing the format of a file. This can be for the purpose of changing the audio or video's bitrate, codec, or other attributes, to reduce disk usage or for compatibility with a certain program/device.

It is important to note that transcoding can be highly detrimental to quality when dealing with lossy codecs, particularly for video. This is because the second time a stream is encoded lossily the codec has less information to work with, causing it to produce a cruder approximation of the original. As with many other quality issues, this problem can be worked around by increasing the bitrate, though some quality loss (as well as possible re-encoding of the previous codec's artifacts) will inevitably occur.

Also note that, provided both container formats support the codec, transcoding is not necessary to switch container formats. For example, an XviD video stream in an AVI file can be losslessly remuxed into an Ogg file.

===[[MPEG-TS|TS]]===
Abbreviation for '''T'''ransport '''S'''tream, as in MPEG TS.

===[[Transport Stream]]===

Dictionary

2007-10-12T12:53:13Z

Tom W.M.: /* Transcode */ elaboration

__NOTOC__
Some terms used in the area of Audio/Video and their meaning.

{{stub}}

===[[Aspect Ratio]]===
The ratio of width to height of a video.

===[[Bitrate]]===
The number of bits of data to be played per second.

===[[Chroma]]===
Greek for color, the part of a video file or signal that encodes the color portion.

===[[Codec]]===
A part of the program which understands a type of video or audio (short for '''Co'''mpression/'''Dec'''ompression). DivX and Theora are examples of video codecs; MP3 and Vorbis are audio codecs. The output stream produced when a codec to audio or video is generally "muxed" into a container format, such as AVI or Ogg. As certain codecs are often associated with certain container formats, the name of the container is often used to imply the codec, such as "Ogg", which usually refers to a Vorbis stream in an Ogg container.

===[[Decode]]===
To understand and play a file, VideoLAN needs to decode it. It does this with a decoder. See codec.

===[http://mydatapages.com/deinterlacing.html Deinterlacing]===
Deinterlacing is the process of converting interlaced video (a sequence of fields) into a non-interlaced form (a sequence of frames). This is a fundamentally impossible process that must always produce some image degradation, since it ideally requires "temporal interpolation" which involves guessing the movement of every object in the image and applying motion correction to every object.

===[[Demuxing]]===

===[[Encode]]===

===[[MPEG-ES|ES]]===
An '''E'''lementry '''S'''tream, a single channel of audio, video or subtitles (without a container).

===[[FourCC]]===

===[[Framerate]]===
The number of frames of video displayed (or encoded to be displayed) per unit time, usually expressed in frames per second (fps) or Hertz (Hz). One Hertz is equivilant to one frame per second.

===[[IDCT]]===

===[[Keyframe]]===
A [[frame]] of video which is stored as a complete image, not just as the changes from the previous image.

===[[Motion Compensation]]===
Part of the video compression process. New frames normally store changes in the image since the previous frame. If the scene is moving as a whole (such as panning), motion compensation moves the reference frame to line up with the new frame. This means that there are less changes to be stored since the previous frame, and so less data needs to be stored.

===[[Muxing]]===

===[[Overlay]]===
Displaying an image on top of the video

===[[Packetizing]]===

===[[Post Processing]]===

===[[PCR]]===

===[[MPEG-PS|PS]]===
Abbreviation for '''P'''rogram '''S'''tream.

===[[PTS]]===

===[[Sample rate]]===
Usually used with audio, the frequency at which a signal is digitally sampled, usually expressed in Hertz (Hz) or kiloHertz (kHz). One Hertz is equivilant to one sample per second, One kiloHertz is a thousand (1000) Hertz.

===[[Transcode]]===
Transcoding is changing the format of a file. This can be for the purpose of changing the audio or video's bitrate, codec, or other attributes, to reduce disk usage or for compatibility with a certain program/device.

It is important to note that transcoding can be highly detrimental to quality when dealing with lossy codecs, particularly for video. This is because the second time a stream is encoded lossily the codec has less information to work with, causing it to produce a cruder approximation of the original. As with many other quality issues, this problem can be worked around by increasing the bitrate, though some quality loss (as well as possible re-encoding of the previous codec's artifacts) will inevitably occur.

Also note that, provided both container formats support the codec, transcoding is not necessary to switch container formats. For example, an XviD video stream in an AVI file can be losslessly remuxed into an Ogg file.

===[[MPEG-TS|TS]]===
Abbreviation for '''T'''ransport '''S'''tream, as in MPEG TS.

===[[Transport Stream]]===

Dictionary

2007-10-12T12:35:26Z

Tom W.M.: /* Decode */

Dictionary

2007-10-12T12:34:57Z

Tom W.M.: /* Codec */ elaborated

Dictionary

2007-10-12T12:28:30Z

Tom W.M.: /* TS */

Help VideoLAN

2007-10-12T12:26:03Z

Tom W.M.: /* Maintainer / Packager */ grammar

Here are ways to help VideoLAN project.

'''VideoLAN NEEDs YOU'''

== Code ==
If you are a programmer, you can help us by integrating the project:
* New features
* Features improvement
* Bug Tracking
* Code cleaning
* Porting to a new platform

If don't feel taking such huge task, we suggest you to look at our [[Code Janitorial|Code Janitorial project page]].

If you don't feel comfortable working on code but are a native speaker of the English language, look at [[QT4StringsReview|Strings Review]].

Also take a look at our [[Mini Projects]] Page.

== Maintainer / Packager ==
If you know how to package for your special distribution/OS, please do so. Help us port {{VLC}} to as many platforms as possible.

== Documentation ==
If you know the software, update the [[Documentation:documentation | documentation]], the wiki, create How_To, answer on the [http://forum.videolan.org forum].

Help us give the best support to everyone.

== Designer ==
You can help with your design skills by :
* Repairing and updating the websites
* Create new [[skins]]
* Create new icons, screenshots, etc... See the [[VideoLAN_Design|design]] page

== Tester ==
You can test and report bugs.
You can enter the [[quality| quality team]].

== Promote VLC ==

Subscribe to freshmeat for VLC !

[[Category:About VideoLAN]]

Help VideoLAN

2007-10-12T12:24:00Z

Tom W.M.: /* Code */ plat-form -> platform

Here are ways to help VideoLAN project.

'''VideoLAN NEEDs YOU'''

== Code ==
If you are a programmer, you can help us by integrating the project:
* New features
* Features improvement
* Bug Tracking
* Code cleaning
* Porting to a new platform

If don't feel taking such huge task, we suggest you to look at our [[Code Janitorial|Code Janitorial project page]].

If you don't feel comfortable working on code but are a native speaker of the English language, look at [[QT4StringsReview|Strings Review]].

Also take a look at our [[Mini Projects]] Page.

== Maintainer / Packager ==
If you know how to package for your special distribution/OS, please do so and help us porting {{VLC}} to the more platforms possible.

== Documentation ==
If you know the software, update the [[Documentation:documentation | documentation]], the wiki, create How_To, answer on the [http://forum.videolan.org forum].

Help us give the best support to everyone.

== Designer ==
You can help with your design skills by :
* Repairing and updating the websites
* Create new [[skins]]
* Create new icons, screenshots, etc... See the [[VideoLAN_Design|design]] page

== Tester ==
You can test and report bugs.
You can enter the [[quality| quality team]].

== Promote VLC ==

Subscribe to freshmeat for VLC !

[[Category:About VideoLAN]]

Intellectual Properties

2007-10-12T12:21:29Z

Tom W.M.: Intellectual Properties moved to Intellectual Property: "Properties" is incorrect in this case.

#REDIRECT [[Intellectual Property]]

Intellectual Property

2007-10-12T12:21:29Z

Tom W.M.: Intellectual Properties moved to Intellectual Property: "Properties" is incorrect in this case.

== Code Copyright ==

Most of the copyright of the projects and software belongs to [http://www.videolan.org/team/ VideoLAN's team] and to the [http://trac.videolan.org/vlc/browser/trunk/AUTHORS authors].

Some files are naming some other copyrights and authors. If you need, check them all in the latest [[SVN]].

== License ==

'''VideoLAN''' produces free software projects under the [http://trac.videolan.org/vlc/browser/trunk/COPYING GNU General Public License], '''version 2 or any later version'''.
The License is under the COPYING file of the SVN and all the tarballs.

The source code for VLC media player is released under '''version 2''' of the GPL, thought binaries may be released under version 3 if required by included libraries. For more information, see [http://www.videolan.org/pr2007-1.html this press release].

== Usage ==
You can use any GPL software without any restriction.

However, most MPEG codec are patented in some country and require payment of royalties for any use. It's the responsibility of the user to do so if based in such country.

== Redistribution / Copying ==

You can redistribute, copy and modify any GPL software, including VideoLAN's, but you have to conform to the LICENSE, which is mainly that you have to provide the source code and use a LICENSE compatible with the GPL. If you don't understand, please check this article about
[http://en.wikipedia.org/wiki/GPL GPL on Wikipedia].

===[[Frequently Asked Questions|FAQ]]===

== Names / Trademark ==
The official name of the project is '''VideoLAN'''.

The official name of [[VLC media player|VLC]] is '''VLC media player'''. It used to be called ''VideoLAN Client'', but this is not true anymore.

''VLC'' is the familiar name of '''VLC media player'''.

The soppera-cone is the official icon of the program. http://download.videolan.org/images/goodies/cone-soppera10-moyen.png

The official names of [[VLS]] are '''VLS''' and '''VideoLAN Server'''.

[[Category:About VideoLAN]]

Intellectual Property

2007-10-12T12:15:15Z

Tom W.M.: capitalization of VideoLAN

Intellectual Property

2007-10-12T12:13:15Z

Tom W.M.: /* License */ updated to reflect version 2 choice for VLC media player

== Code Copyright ==

Most of the copyright of the projects and software belongs to [http://www.videolan.org/team/ Videolan's team] and to the [http://trac.videolan.org/vlc/browser/trunk/AUTHORS authors].

Some files are naming some other copyrights and authors. If you need, check them all in the latest [[SVN]].

== License ==

'''VideoLAN''' produces free software projects under the [http://trac.videolan.org/vlc/browser/trunk/COPYING GNU General Public License], '''version 2 or any later version'''.
The License is under the COPYING file of the SVN and all the tarballs.

The source code for VLC media player is released under '''version 2''' of the GPL, thought binaries may be released under version 3 if required by included libraries. For more information, see [http://www.videolan.org/pr2007-1.html this press release].

== Usage ==
You can use any GPL software without any restriction.

However, most MPEG codec are patented in some country and require payment of royalties for any use. It's the responsibility of the user to do so if based in such country.

== Redistribution / Copying ==

You can redistribute, copy and modify any GPL software, including VideoLAN's, but you have to conform to the LICENSE, which is mainly that you have to provide the source code and use a LICENSE compatible with the GPL. If you don't understand, please check this article about
[http://en.wikipedia.org/wiki/GPL GPL on Wikipedia].

===[[Frequently Asked Questions|FAQ]]===

== Names / Trademark ==
The official name of the project is '''VideoLAN'''.

The official name of [[VLC media player|VLC]] is '''VLC media player'''. It used to be called ''VideoLAN Client'', but this is not true anymore.

''VLC'' is the familiar name of '''VLC media player'''.

The soppera-cone is the official icon of the program. http://download.videolan.org/images/goodies/cone-soppera10-moyen.png

The official names of [[VLS]] are '''VLS''' and '''VideoLAN Server'''.

[[Category:About VideoLAN]]

Intellectual Property

2007-10-12T12:06:46Z

Tom W.M.: /* Usage */ spelling

== Code Copyright ==

Most of the copyright of the projects and software belongs to [http://www.videolan.org/team/ Videolan's team] and to the [http://trac.videolan.org/vlc/browser/trunk/AUTHORS authors].

Some files are naming some other copyrights and authors. If you need, check them all in the latest [[SVN]].

== License ==

'''VideoLAN''' produces free software projects under the [http://trac.videolan.org/vlc/browser/trunk/COPYING GNU General Public License], '''version 2 or any later version'''.
The License is under the COPYING file of the SVN and all the tarballs.

== Usage ==
You can use any GPL software without any restriction.

However, most MPEG codec are patented in some country and require payment of royalties for any use. It's the responsibility of the user to do so if based in such country.

== Redistribution / Copying ==

You can redistribute, copy and modify any GPL software, including VideoLAN's, but you have to conform to the LICENSE, which is mainly that you have to provide the source code and use a LICENSE compatible with the GPL. If you don't understand, please check this article about
[http://en.wikipedia.org/wiki/GPL GPL on Wikipedia].

===[[Frequently Asked Questions|FAQ]]===

== Names / Trademark ==
The official name of the project is '''VideoLAN'''.

The official name of [[VLC media player|VLC]] is '''VLC media player'''. It used to be called ''VideoLAN Client'', but this is not true anymore.

''VLC'' is the familiar name of '''VLC media player'''.

The soppera-cone is the official icon of the program. http://download.videolan.org/images/goodies/cone-soppera10-moyen.png

The official names of [[VLS]] are '''VLS''' and '''VideoLAN Server'''.

[[Category:About VideoLAN]]

Talk:Hardware Compatibility list

2006-12-06T02:38:12Z

Tom W.M.: Added comment

== "MPEG2 capture on windows possibly broken" — December 2006 ==

I've moved this big block of text down to a footnote; I wasn't sure how one is supposed to do it on this wiki (without Wikipedia's tempaltes), so I used a with an ID to create an anchor (<a> was filtered). It would be nice if the source/author of the quotation were cited, to give a bit of context. Some specifics on the configuration of the setup in question would also be nice. — [[User:Tom W.M.|Tom W.M.]] 03:38, 6 December 2006 (CET)

Talk:Hardware Compatibility list

2006-12-06T02:38:00Z

Tom W.M.: Added comment

== "MPEG2 capture on windows possibly broken" — December 2006 ==

I've moved this big block of text down to a footnote; I wasn't sure how one is supposed to do it on this wiki (without Wikipedia's tempaltes), so I used a with an ID to create an anchor (<a> was filtered). It would be nice if the source/author of the quotation were cited, to give a bit of context. Some specifics on the configuration of the setup in question would also be nice. [[User:Tom W.M.|Tom W.M.]] 03:38, 6 December 2006 (CET)

Talk:Hardware Compatibility list

2006-12-06T02:37:39Z

Tom W.M.: Added comment

Hardware Compatibility list

2006-12-06T02:30:58Z

Tom W.M.: Moved last addition into a footnote (not sure I'm supposed to create anchors in the wiki format--used a with an ID)

{{stub}}

Please add hardware known to work with [[VLC]]. Don't forget to specify the Operating System you know it to work on.

== Capture Cards ==
{| class="wikitable"
! Product || Vendor || Format || OS || Notes
|-
| Hauppauge WinTV 38101 || Hauppauge || Analog || Windows XP DirectShow || Set "Video input chroma format" to "RV24"
|-
| Hauppauge WinTV-PVR-150 || Hauppauge || Analog || Linux (using v4l2) / Windows (using DirectShow) || MPEG2 capture on windows possibly broken[[Hardware_Compatibility_list#MPEG2_capture_on_windows_possibly_broken_fn|*]]
|-
| Hauppauge WinTV-PVR-250 || Hauppauge || Analog || Linux (using v4l2) / Windows (using DirectShow)||
|-
| Hauppauge WinTV-PVR-350 || Hauppauge || Analog || Linux (using v4l2) / Windows (using DirectShow)||
|-
| Hauppauge WinTV-Nova-S-CI PCI || Hauppauge || Satellite [[DVB-S]] || Linux || Bridge: Philips SAA7146A
|-
| Hauppauge WinTV-Nova-S PCI || Hauppauge || Satellite [[DVB-S]] || Linux || Bridge: Philips SAA7146A
|-
| Hauppauge WinTV-Nova-T PCI || Hauppauge || Terrestrial [[DVB-T]] || Linux || Bridge: Philips SAA7146A; Demodulator: Philips TDA 10045
|-
| Hauppauge WinTV-Nova-T USB2|| Hauppauge || Terrestrial [[DVB-T]] || Linux ||
|-
| Avermedia AVerTV DVB-T 771 || Avermedia || Terrestrial [[DVB-T]] || Linux (using VLS or VLC) || Bridge: Brooktree bt878 (Conexant fusion 878A); Demodulator: MT352 (Samsung MT352CG)
|-
| Avermedia AVerTV Studio 307 || Avermedia || Analo) || Linux (using v4l2) ||
|-
| Avermedia TvPhone/Capture 98 || Avermedia || Analog Tuner/S-video/Composite || Windows XP Pro +SP1 || Chipset: Philips Bt878, Drivers: Standart Conexant WDM drivers, Stream: 320x240/400x300, MJPG/WMV2, MP3, NO MUXER
|-
| PixelView Bt878p+ || PixelView || Analog || Windows / Linux (using v4l2) ||
|-
| Technisat AirStar 2 || Technisat || Terrestrial [[DVB-T]] || Linux (using VLS or VLC) || Bridge: B2C2 FlexCop Chipset; Demodulator: ST MT352
|-
| Technisat SkyStar 2 || Technisat || Satellite [[DVB-S]] || Linux (using VLC) ||
|-
| Technisat CableStar 2 || Technisat || Cable [[DVB-C]] || Linux (using VLC) ||
|-
| ATI Rage 128 Pro AIW || ATI Technologies || Analog || Windows 2000 DirectShow (not XP) || Must enter "YUV12" into the "Video input chroma format" field in the "Advanced options (DirectShow input)" dialog
|-
| ATI AIW 9800 PRO || ATI Technologies || Analog || Windows || uses ATI Rage Threatre chip, software decoder
|-
| Winfast TV2000/Expert || Leadtek || Analog Tuner/S-video/Composite || Windows XP Pro || Chipset: CX2388X 10bit ADC
|-
| Osprey 230 || Viewsonic || Composite/S-Video || Windows XP/2000 DirectShow || Simulstream works with multiple VLC streams & VLM
|-
| DVC100 (Dazzle, Rev:1.1) || Pinnacle || Composite/S-Video || Windows XP DirectShow || No sound, only picture. Pinnacle support giving no solution (09/2006)

|-
| Travel TV (PCMCIA/Cardbus) || Chronos || Analog Tuner/S-video/Composite || Linux (using v4l2) || Chipset: Philips SAA7134, not autodetected, use modprobe with card=67 (Behold)
|}

* "I have the same problem being unable to stream directly from my Hauppauge PVR 150 to the network. It looks like VLC tries to connect to a wrong output-pin of the "Hauppauge WinTV PVR PCI II Capture" filter called "Capture" (see log "trying pin Capture" ...). When building a filter graph using graphedit I use the output pin "656" and connect it to a filter called "Hauppauge WinTV PVR PCI II Encoder" which has an input pin called "656" and and MPEG output pin. This works fine in graphedit - I get MPEG video and audio this way."

Related topics: [[How to Use a Capture Card]]

Useful Linux links: [http://www.linuxtv.org/ LinuxTV] and [http://ivtvdriver.org/ IVTV]

== Appliance Encoders ==

{| class="wikitable"
! Product || Vendor || Opinion || OS || Contact
|-
| VBrick MPEG2 || VBrick || Main Level, Main Profile 4:2:0. ISMA SAP announcements supported by VLC || Windows/MacOSX/Linux || http://www.vbrick.com (US) http://www.techex.co.uk (Europe)
|-
| VBrick MPEG4 || VBrick || MPEG4 RTSP stream works, ISMA SAP announcements supported by VLC || Windows/MacOSX/Linux || http://www.vbrick.com (US) http://www.techex.co.uk (Europe)
|}

== IP Cameras ==
{| class="wikitable"
! Product || Vendor || Opinion || OS
|-
| Axis 230 MPEG-2 || Axis || http stream works fine with VLC || Windows/MacOSX/Linux...
|-
| Axis 207 || Axis || MPEG4 rtsp stream also works fine || Windows/MacOSX/Linux...
|}

== Webcams (USB) ==
{| class="wikitable"
! Product || Vendor || Opinion || OS
|-
| StarCam 370i || MSI || udp stream works fine with VLC || Windows
|-
| 150 Spacecam Portable || Trust || works with VLC || Windows

|}

Interfaces

2006-11-29T23:46:41Z

Tom W.M.: added missing space

Interfaces are the way you tell VLC what to do. VLC has 4 main Interfaces:
* The [[wxWidgets Interface]] (wx) is the default interface on Linux and Windows.
* The [[Skins|skins2 Interface]] is an interface where you can choose how VLC player looks (Works on Linux and Windows).
* The [[Mac OS X Interface]] is the default (and only) graphical interface on Mac OS X.
* The [[BeOS Interface]] is the default (and only) graphical interface on BeOS.

The full list of interfaces is
{|
|'''wx'''
| Default [http://www.wxwidgets.org/ wxWidgets] interface on Linux and Windows
|-
|'''skins2'''
| Load VLC with a [[Skins|skin]]. (Linux and Windows only)
|-
|'''macosx'''
| Default Mac OS X interface
|-
|'''beos'''
| Default BeOS interface
|-
| '''http'''
| [[Web Interface]], used for controlling VLC from over a network
|-
| '''gestures'''
| [[Mouse Gestures]], where you can control vlc by moving the mouse
|-
| '''rc''', '''ncurses''', '''telnet'''
| [[Console|Console Interfaces]], a non-graphical interface.
|-
| '''showintf'''
| Show Intefaces module
|-
| '''hotkeys''' and '''joystick'''
| Control VLC with the keyboard/joystick
|-
| '''dummy'''
| Don't use an interface
|}

There are some other interfaces, you can view the list by running VLC with the -l option:
vlc -l
This also displays the [[muxers]] and [[encoders]]/[[decoders]]. On linux, run
vlc -l | grep -i interface
to display the interfaces.

To run VLC with a different primary interface, use the following command:
vlc --intf ''name''
You can also use
vlc -I ''name''
You can also change the default in the [[Preferences]].

However you can also launch more than one interface:
vlc --intf wx --extraintf sap,telnet,http
This will launch VLC with the default wxWidgets interface, but will also launch the sap, telnet and web interface in addition to the wxWidgets one. The default for this can also be changed in the Preferences.

Note that if you only use the dummy interface, you won't be able to tell vlc to quit - you may have to break it manually with Ctrl+C; or use vlc:quit as the last item on the playlist.

Hardware Compatibility list

2006-11-29T23:35:54Z

Tom W.M.: /* Capture Cards */ Changed column headings

{{stub}}

Please add hardware known to work with [[VLC]]. Don't forget to specify the Operating System you know it to work on.

== Capture Cards ==
{| class="wikitable"
! Product || Vendor || Format || OS || Notes
|-
| Hauppauge WinTV 38101 || Hauppauge || Analog || Windows XP DirectShow || Set "Video input chroma format" to "RV24"
|-
| Hauppauge WinTV-PVR-150 || Hauppauge || Analog || Linux (using v4l2) / Windows (using DirectShow) ||
|-
| Hauppauge WinTV-PVR-250 || Hauppauge || Analog || Linux (using v4l2) / Windows (using DirectShow)||
|-
| Hauppauge WinTV-PVR-350 || Hauppauge || Analog || Linux (using v4l2) / Windows (using DirectShow)||
|-
| Hauppauge WinTV-Nova-S-CI PCI || Hauppauge || Satellite [[DVB-S]] || Linux || Bridge: Philips SAA7146A
|-
| Hauppauge WinTV-Nova-S PCI || Hauppauge || Satellite [[DVB-S]] || Linux || Bridge: Philips SAA7146A
|-
| Hauppauge WinTV-Nova-T PCI || Hauppauge || Terrestrial [[DVB-T]] || Linux || Bridge: Philips SAA7146A; Demodulator: Philips TDA 10045
|-
| Hauppauge WinTV-Nova-T USB2|| Hauppauge || Terrestrial [[DVB-T]] || Linux ||
|-
| Avermedia AVerTV DVB-T 771 || Avermedia || Terrestrial [[DVB-T]] || Linux (using VLS or VLC) || Bridge: Brooktree bt878 (Conexant fusion 878A); Demodulator: MT352 (Samsung MT352CG)
|-
| Avermedia AVerTV Studio 307 || Avermedia || Analo) || Linux (using v4l2) ||
|-
| Avermedia TvPhone/Capture 98 || Avermedia || Analog Tuner/S-video/Composite || Windows XP Pro +SP1 || Chipset: Philips Bt878, Drivers: Standart Conexant WDM drivers, Stream: 320x240/400x300, MJPG/WMV2, MP3, NO MUXER
|-
| PixelView Bt878p+ || PixelView || Analog || Windows / Linux (using v4l2) ||
|-
| Technisat AirStar 2 || Technisat || Terrestrial [[DVB-T]] || Linux (using VLS or VLC) || Bridge: B2C2 FlexCop Chipset; Demodulator: ST MT352
|-
| Technisat SkyStar 2 || Technisat || Satellite [[DVB-S]] || Linux (using VLC) ||
|-
| Technisat CableStar 2 || Technisat || Cable [[DVB-C]] || Linux (using VLC) ||
|-
| ATI Rage 128 Pro AIW || ATI Technologies || Analog || Windows 2000 DirectShow (not XP) || Must enter "YUV12" into the "Video input chroma format" field in the "Advanced options (DirectShow input)" dialog
|-
| ATI AIW 9800 PRO || ATI Technologies || Analog || Windows || uses ATI Rage Threatre chip, software decoder
|-
| Winfast TV2000/Expert || Leadtek || Analog Tuner/S-video/Composite || Windows XP Pro || Chipset: CX2388X 10bit ADC
|-
| Osprey 230 || Viewsonic || Composite/S-Video || Windows XP/2000 DirectShow || Simulstream works with multiple VLC streams & VLM
|-
| DVC100 (Dazzle, Rev:1.1) || Pinnacle || Composite/S-Video || Windows XP DirectShow || No sound, only picture. Pinnacle support giving no solution (09/2006)

|-
| Travel TV (PCMCIA/Cardbus) || Chronos || Analog Tuner/S-video/Composite || Linux (using v4l2) || Chipset: Philips SAA7134, not autodetected, use modprobe with card=67 (Behold)
|}

Related topics: [[How to Use a Capture Card]]

Useful Linux links: [http://www.linuxtv.org/ LinuxTV] and [http://ivtvdriver.org/ IVTV]

== Appliance Encoders ==

{| class="wikitable"
! Product || Vendor || Opinion || OS || Contact
|-
| VBrick MPEG2 || VBrick || Main Level, Main Profile 4:2:0. ISMA SAP announcements supported by VLC || Windows/MacOSX/Linux || http://www.vbrick.com (US) http://www.techex.co.uk (Europe)
|-
| VBrick MPEG4 || VBrick || MPEG4 RTSP stream works, ISMA SAP announcements supported by VLC || Windows/MacOSX/Linux || http://www.vbrick.com (US) http://www.techex.co.uk (Europe)
|}

== IP Cameras ==
{| class="wikitable"
! Product || Vendor || Opinion || OS
|-
| Axis 230 MPEG-2 || Axis || http stream works fine with VLC || Windows/MacOSX/Linux...
|-
| Axis 207 || Axis || MPEG4 rtsp stream also works fine || Windows/MacOSX/Linux...
|}

== Webcams (USB) ==
{| class="wikitable"
! Product || Vendor || Opinion || OS
|-
| StarCam 370i || MSI || udp stream works fine with VLC || Windows
|-
| 150 Spacecam Portable || Trust || works with VLC || Windows

|}

Hardware Compatibility list

2006-11-29T23:34:06Z

Tom W.M.: /* Capture Cards */ Added Hauppauge 38101 and ATI Rage 128 Pro AIW, normalized formatting

{{stub}}

Please add hardware known to work with [[VLC]]. Don't forget to specify the Operating System you know it to work on.

== Capture Cards ==
{| class="wikitable"
! Product || Vendor || Opinion || OS || Specification
|-
| Hauppauge WinTV 38101 || Hauppauge || Analog || Windows XP DirectShow || Set "Video input chroma format" to "RV24"
|-
| Hauppauge WinTV-PVR-150 || Hauppauge || Analog || Linux (using v4l2) / Windows (using DirectShow) ||
|-
| Hauppauge WinTV-PVR-250 || Hauppauge || Analog || Linux (using v4l2) / Windows (using DirectShow)||
|-
| Hauppauge WinTV-PVR-350 || Hauppauge || Analog || Linux (using v4l2) / Windows (using DirectShow)||
|-
| Hauppauge WinTV-Nova-S-CI PCI || Hauppauge || Satellite [[DVB-S]] || Linux || Bridge: Philips SAA7146A
|-
| Hauppauge WinTV-Nova-S PCI || Hauppauge || Satellite [[DVB-S]] || Linux || Bridge: Philips SAA7146A
|-
| Hauppauge WinTV-Nova-T PCI || Hauppauge || Terrestrial [[DVB-T]] || Linux || Bridge: Philips SAA7146A; Demodulator: Philips TDA 10045
|-
| Hauppauge WinTV-Nova-T USB2|| Hauppauge || Terrestrial [[DVB-T]] || Linux ||
|-
| Avermedia AVerTV DVB-T 771 || Avermedia || Terrestrial [[DVB-T]] || Linux (using VLS or VLC) || Bridge: Brooktree bt878 (Conexant fusion 878A); Demodulator: MT352 (Samsung MT352CG)
|-
| Avermedia AVerTV Studio 307 || Avermedia || Analo) || Linux (using v4l2) ||
|-
| Avermedia TvPhone/Capture 98 || Avermedia || Analog Tuner/S-video/Composite || Windows XP Pro +SP1 || Chipset: Philips Bt878, Drivers: Standart Conexant WDM drivers, Stream: 320x240/400x300, MJPG/WMV2, MP3, NO MUXER
|-
| PixelView Bt878p+ || PixelView || Analog || Windows / Linux (using v4l2) ||
|-
| Technisat AirStar 2 || Technisat || Terrestrial [[DVB-T]] || Linux (using VLS or VLC) || Bridge: B2C2 FlexCop Chipset; Demodulator: ST MT352
|-
| Technisat SkyStar 2 || Technisat || Satellite [[DVB-S]] || Linux (using VLC) ||
|-
| Technisat CableStar 2 || Technisat || Cable [[DVB-C]] || Linux (using VLC) ||
|-
| ATI Rage 128 Pro AIW || ATI Technologies || Analog || Windows 2000 DirectShow (not XP) || Must enter "YUV12" into the "Video input chroma format" field in the "Advanced options (DirectShow input)" dialog
|-
| ATI AIW 9800 PRO || ATI Technologies || Analog || Windows || uses ATI Rage Threatre chip, software decoder
|-
| Winfast TV2000/Expert || Leadtek || Analog Tuner/S-video/Composite || Windows XP Pro || Chipset: CX2388X 10bit ADC
|-
| Osprey 230 || Viewsonic || Composite/S-Video || Windows XP/2000 DirectShow || Simulstream works with multiple VLC streams & VLM
|-
| DVC100 (Dazzle, Rev:1.1) || Pinnacle || Composite/S-Video || Windows XP DirectShow || No sound, only picture. Pinnacle support giving no solution (09/2006)

|-
| Travel TV (PCMCIA/Cardbus) || Chronos || Analog Tuner/S-video/Composite || Linux (using v4l2) || Chipset: Philips SAA7134, not autodetected, use modprobe with card=67 (Behold)
|}

Related topics: [[How to Use a Capture Card]]

Useful Linux links: [http://www.linuxtv.org/ LinuxTV] and [http://ivtvdriver.org/ IVTV]

== Appliance Encoders ==

{| class="wikitable"
! Product || Vendor || Opinion || OS || Contact
|-
| VBrick MPEG2 || VBrick || Main Level, Main Profile 4:2:0. ISMA SAP announcements supported by VLC || Windows/MacOSX/Linux || http://www.vbrick.com (US) http://www.techex.co.uk (Europe)
|-
| VBrick MPEG4 || VBrick || MPEG4 RTSP stream works, ISMA SAP announcements supported by VLC || Windows/MacOSX/Linux || http://www.vbrick.com (US) http://www.techex.co.uk (Europe)
|}

== IP Cameras ==
{| class="wikitable"
! Product || Vendor || Opinion || OS
|-
| Axis 230 MPEG-2 || Axis || http stream works fine with VLC || Windows/MacOSX/Linux...
|-
| Axis 207 || Axis || MPEG4 rtsp stream also works fine || Windows/MacOSX/Linux...
|}

== Webcams (USB) ==
{| class="wikitable"
! Product || Vendor || Opinion || OS
|-
| StarCam 370i || MSI || udp stream works fine with VLC || Windows
|-
| 150 Spacecam Portable || Trust || works with VLC || Windows

|}