Difference between revisions of "WAVE"
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{{mux|id=wav|encoder=y}} | {{mux|id=wav|encoder=y}} | ||
| − | '''WAVE''' is a way of storing audio, which is normally uncompressed. It is based on [[RIFF]]. | + | '''WAVE''' is a way of storing audio, which is normally [[raw|uncompressed]]. It is based on [[RIFF]]. Note that wav isn't a streamable audio format, so you can only stream it using [[RTP]] (to stream it otherwise, transcode it to something that's streamable). |
== Accepted audio codecs == | == Accepted audio codecs == | ||
* [[dummy]]: Uncompressed audio of various types, based on storing integer values of the amplitude of the sound (see [[wikipedia:PCM|PCM]]). | * [[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. | * [[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. | ||
| + | |||
| + | == Converting to WAVE == | ||
| + | |||
| + | The command-line for [[convert]]ing any readable input file to a WAVE audio file is the following: | ||
| + | |||
| + | {{%}} {{font colour|grey|vlc}} -I dummy -vv {{font colour|green|"input.mp3"}} --sout=#transcode{acodec={{font colour|red|s16l}},channels=2,ab={{font colour|purple|128}},samplerate=44100}:standard{access=file,mux=wav,dst={{font colour|blue|"output.wav"}}} vlc://quit | ||
| + | |||
| + | Where on Windows you need to add installation directory in front of {{font colour|grey|vlc}} (by default {{font colour|grey|{{Path to VLC|windows|dir=y}}}}). | ||
| + | |||
| + | As {{font colour|red|audio codec (acodec)}} you can specify one of the above mentioned ones. The [[bitrate]] of the output file is specified by the {{font colour|purple|ab}} parameter. | ||
== Source code == | == Source code == | ||
{{file|modules/mux/wav.c|output muxer}} | {{file|modules/mux/wav.c|output muxer}} | ||
{{file|modules/demux/wav.c|input demuxer}} | {{file|modules/demux/wav.c|input demuxer}} | ||
Latest revision as of 23:20, 14 March 2019
wav
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VLC can encode and decode this container. The module name to use at the command line is wav. |
WAVE is a way of storing audio, which is normally uncompressed. It is based on RIFF. Note that wav isn't a streamable audio format, so you can only stream it using RTP (to stream it otherwise, transcode it to something that's streamable).
Accepted audio codecs
- dummy: Uncompressed audio of various types, based on storing integer values of the amplitude of the sound (see 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.
Converting to WAVE
The command-line for converting any readable input file to a WAVE audio file is the following:
% vlc -I dummy -vv "input.mp3" --sout=#transcode{acodec=s16l,channels=2,ab=128,samplerate=44100}:standard{access=file,mux=wav,dst="output.wav"} vlc://quit
Where on Windows you need to add installation directory in front of vlc (by default "%PROGRAMFILES%\VideoLAN\VLC").
As audio codec (acodec) you can specify one of the above mentioned ones. The bitrate of the output file is specified by the ab parameter.
Source code
- modules/mux/wav.c (output muxer)
- modules/demux/wav.c (input demuxer)
