VideoLAN Wiki - User contributions [en]

VDD16/Attendees

2016-08-31T19:30:22Z

ILEoo:

Back to [[VDD16|main VDD page]].

= Arrivals =
Please order chronologically by time of arrival.

{| border="1" class="sortable"
! Name
! IRC
! Time of arrival
! Port of disembarkment
! Vessel
! Notes
|-
| Janne Grunau
| jannau
| Wednesday 22:27
| Central Station
| ICE1090
| from Karlsruhe
|-
| Vittorio Giovara
| koda
| Thursday 07:50
| Flughafen Tegel (TXL)
| UA 962
| from EWR
|-
| Jean-Baptiste Kempf
| j-b
| Thursday 10:25
| Flughafen Tegel (TXL)
| AB 8301
| from ORY
|-
| Henrik Gramner
| Gramner
| Thursday 12:10
| Flughafen Tegel (TXL)
| AB 8003
| from ARN
|-
| Felix Paul Kühne
| feepk
| Thursday afternoon
| Hauptbahnhof
| ICE lines 6 or 8
| from BRE via HAJ
|-
| Rémi Denis-Courmont
| courmisch
| Thursday 20:40
| Flughafen Tegel (TXL)
| AB 8077
| from HEL
|-
| Martin Storsjö
| wbs
| Thursday 20:40
| Flughafen Tegel (TXL)
| AB 8077
| from HEL
|-
| Konstantin Pavlov
| thresh
| Thursday 21:20
| Schönefeld (SXF)
| SU 2316
| from SVO
|-
| François Cartegnie
| inthewings
| Friday 09:35
| Tegel (TXL)
| TK 1721
| from IST
|-
| Hugo Beauzée-Luyssen
| chouquette
| Friday 10:25
| Tegel (TXL)
| AB 8301
| From ORY
|-
| Alexandre Perraud
| corbax
| Friday 10:25
| Tegel (TXL)
| AB 8301
| From ORY
|-
| Geoffrey Métais
| dekans
| Friday 10:25
| Tegel (TXL)
| AB 8301
| From ORY
|-
| Duncan McNamara
| skantes
| Friday 10:25
| Tegel (TXL)
| AB 8301
| From ORY
|-
| Thomas Guillem
| tguillem
| Friday 10:25
| Tegel (TXL)
| AB 8301
| From ORY
|-
| Thomas Nigro
| tnigro
| Friday 10:25
| Tegel (TXL)
| AB 8301
| From ORY
|-
| Ludovic Fauvet
| etix
| Friday 10:25
| Tegel (TXL)
| AB 8301
| From ORY
|-
| Filip Roséen
| refp
| Friday 10:25
| Tegel (TXL)
| AB 8301
| From ORY
|-
| Denis Charmet
| TypX
| Friday 10:55
| Flughafen Tegel (TXL)
| 4U 8407
| from CDG
|-
| Ilkka Ollakka
| ILEoo
| Friday 17:55
| TXL
| AY917
| from HEL
|}

= Departures =
Please order chronologically by time of departure.

{| border="1" class="sortable"
! Name
! IRC
! Time of departure
! Port of embarkment
! Vessel
! Notes
|-
| Konstantin Pavlov
| thresh
| Sunday 13:00
| Flughafen Tegel (TXL)
| AB 7248
| to JFK
|-
| François Cartegnie
| inthewings
| Sunday 15:15
| Schönefeld (SXF)
| U2 4372
| to LYS
|-
| Martin Storsjö
| wbs
| Sunday 18:10
| Flughafen Tegel (TXL)
| AB 8078
| to HEL
|-
| Denis Charmet
| TypX
| Sunday 18:10
| Flughafen Tegel (TXL)
| 4U 8404
| to CDG
|-
| Hugo Beauzée-Luyssen
| chouquette
| Sunday 18:35
| Flughafen Tegel (TXL)
| AB 8308
| to ORY
|-
| Alexandre Perraud
| corbax
| Sunday 18:35
| Flughafen Tegel (TXL)
| AB 8308
| to ORY
|-
| Geoffrey Métais
| dekans
| Sunday 18:35
| Flughafen Tegel (TXL)
| AB 8308
| to ORY
|-
| Duncan McNamara
| skantes
| Sunday 18:35
| Flughafen Tegel (TXL)
| AB 8308
| to ORY
|-
| Thomas Guillem
| tguillem
| Sunday 18:35
| Flughafen Tegel (TXL)
| AB 8308
| to ORY
|-
| Thomas Nigro
| tnigro
| Sunday 18:35
| Flughafen Tegel (TXL)
| AB 8308
| to ORY
|-
| Ludovic Fauvet
| etix
| Sunday 18:35
| Flughafen Tegel (TXL)
| AB 8308
| to ORY
|-
| Filip Roséen
| refp
| Sunday 18:35
| Flughafen Tegel (TXL)
| AB 8308
| to ORY
|-
| Jean-Baptiste Kempf
| j-b
| Sunday 18:35
| Flughafen Tegel (TXL)
| AB 8308
| to ORY
|-
| Ilkka Ollakka
| ILEoo
| Sunday 19:10
| TXL
| AY918
| to HEL
|-
| Felix Paul Kühne
| feepk
| Sunday 20:23
| Hauptbahnhof
| ICE 2504 / IC 2021
| to BRE via HAM
|-
| Jan Ekström
| JEEB
| Sunday 21:25
| Flughafen Tegel (TXL)
| AB 8070
| to HEL
|-
| Rémi Denis-Courmont
| courmisch
| Sunday 21:25
| Flughafen Tegel (TXL)
| AB 8070
| to HEL
|-
| Henrik Gramner
| Gramner
| Monday 12:40
| Flughafen Tegel (TXL)
| AB 8004
| to ARN
|-
| Vittorio Giovara
| koda
| Monday 14:20
| Schönefeld (SXF)
| U2 4545
| to NCE
|-
| Janne Grunau
| jannau
| probably Wednesday 18:00
| Central Station
| ICE Sprinter
| to Karlsruhe
|-
|}

= Locals =
People who do not need to travel:

VDD15/Attendees

2015-09-06T17:02:53Z

ILEoo: /* Departures */

= Arrivals =
Please order chronologically by time of arrival.

{| border="1" class="sortable"
! Name
! IRC
! Time
! Port
! Vessel
! Notes
|-
| Arwa Arif
| arwa
| 2015-09-17 08:20
| CDG airport
| 9W 126
| from BOM
|-
| Tim Miller
| drasticactions
| 2015-09-17 08:35
| CDG airport
| DL 243 (AF 3655)
| from BOS
|-
| Rostislav Pehlivanov
| atomnuker
| 2015-09-17 10:17
| Gare du Nord
| TGV TMST
| from London
|-
| Kieran Kunhya
| kierank
| 2015-09-17 16:47
| Gare du Nord
| Eurostar
| from London
|-
| Henrik Gramner
| Gramner
| 2015-09-17 17:25
| CDG airport
| SK559
| from Copenhagen/CPH
|-
| David Fuhrmann
| d-fu
| 2015-09-17 20:54
| Gare de Est
| TGV 9552
|
|-
| Francois Cartegnie
|
| 2015-09-17 21:16
| Gare de Lyon
| TGV 6198
|
|-
| Konstantin Pavlov
| thresh
| 2015-09-17 22:30
| CDG airport T2C
| SU 2460
| from Moscow/SVO
|-
| Ronald S. Bultje
| BBB
| 2015-09-18 9:20
| CDG airport
| DL 400 (AF 3577)
| from NY/JFK
|-
| Thierry Foucu
| lotharkript
| 2015-09-18 10:45
| CDG airport
| UA 990
| from SFO
|-
| Federico Hlawaczek
|
| 2015-09-18 10:45
| CDG airport
| UA 990
| from SFO
|-
| Ilkka Ollakka
| ILEoo
| 2015-09-18 14:20
| CDG airport T2
| AY 875
| from HEL
|-
| Rémi Denis-Courmont
| courmisch
| 2015-09-18 21:35
| CDG airport T2D
| AY 877
| from HEL
|-
| Janne Grunau
| jannau
| 2015-09-18 22:35
| Gare de l'Est
| TGV 9570
| from Karlsruhe
|-
|}

= Departures =
Please order chronologically by time of departure.

{| border="1" class="sortable"
! Name
! IRC
! Time
! Port
! Vessel
! Notes
|-
| Mc Fly Marty
| mcfly
| 1985-10-26 01:22
| Hill Valley, California
| DeLorean OUTATIME
| to Hill Valley
|-
| Tim Miller
| drasticactions
| 2015-09-20 16:45
| CDG airport
| AF 338
| to BOS
|-
| Janne Grunau
| jannau
| 2015-09-20 17:25
| Gare de l'Est
| TGV 9577
| to Karlsruhe
|-
| David Fuhrmann
| d-fu
| 2015-09-20 17:25
| Match found
| -- same train --
|
|-
| Francois Cartegnie
|
| 2015-09-20 17:49
| Gare de Lyon
| TGV 6949
|
|-
| Rémi Denis-Courmont
| courmisch
| 2015-09-20 19:00
| CDG airport T2D
| AY 874
| to HEL
|-
| Ilkka Ollakka
| ILEoo
| 2015-09-20 19:00
| CDG airport T2
| AY 874
| to HEL
|-
| Federico Hlawaczek
|
| 2015-09-21 10:05
| CDG airport
| UA 991
| to SFO
|-
| Rostislav Pehlivanov
| atomnuker
| 2015-09-21 10:13
| Gare du Nord
| TGV TMST
| to London
|-
| Konstantin Pavlov
| thresh
| 2015-09-21 10:40
| CDG airport T2E
| AF 84
| to SFO
|-
| Arwa Arif
| arwa
| 2015-09-21 10:50
| CDG airport
| EY 32
| to HYD
|-
| Ben littler
|
| 2015-09-21 13:30
| CDG airport
| AF 378
| to DTW
|-
| Henrik Gramner
| Gramner
| 2015-09-21 14:00
| CDG airport
| SK2572
| to Stockholm/ARN
|-
| Ronald S. Bultje
| BBB
| 2015-09-21 14:00
| CDG airport
| AF 6
| to NY/JFK
|-
| Thierry Foucu
| lotharkript
| 2015-09-22 10:05
| CDG airport
| UA 991
| to SFO
|-
|}

= Locals =
People who do not need to travel:

VDD15/Attendees

2015-09-06T17:01:48Z

ILEoo: /* Arrivals */

= Arrivals =
Please order chronologically by time of arrival.

{| border="1" class="sortable"
! Name
! IRC
! Time
! Port
! Vessel
! Notes
|-
| Arwa Arif
| arwa
| 2015-09-17 08:20
| CDG airport
| 9W 126
| from BOM
|-
| Tim Miller
| drasticactions
| 2015-09-17 08:35
| CDG airport
| DL 243 (AF 3655)
| from BOS
|-
| Rostislav Pehlivanov
| atomnuker
| 2015-09-17 10:17
| Gare du Nord
| TGV TMST
| from London
|-
| Kieran Kunhya
| kierank
| 2015-09-17 16:47
| Gare du Nord
| Eurostar
| from London
|-
| Henrik Gramner
| Gramner
| 2015-09-17 17:25
| CDG airport
| SK559
| from Copenhagen/CPH
|-
| David Fuhrmann
| d-fu
| 2015-09-17 20:54
| Gare de Est
| TGV 9552
|
|-
| Francois Cartegnie
|
| 2015-09-17 21:16
| Gare de Lyon
| TGV 6198
|
|-
| Konstantin Pavlov
| thresh
| 2015-09-17 22:30
| CDG airport T2C
| SU 2460
| from Moscow/SVO
|-
| Ronald S. Bultje
| BBB
| 2015-09-18 9:20
| CDG airport
| DL 400 (AF 3577)
| from NY/JFK
|-
| Thierry Foucu
| lotharkript
| 2015-09-18 10:45
| CDG airport
| UA 990
| from SFO
|-
| Federico Hlawaczek
|
| 2015-09-18 10:45
| CDG airport
| UA 990
| from SFO
|-
| Ilkka Ollakka
| ILEoo
| 2015-09-18 14:20
| CDG airport T2
| AY 875
| from HEL
|-
| Rémi Denis-Courmont
| courmisch
| 2015-09-18 21:35
| CDG airport T2D
| AY 877
| from HEL
|-
| Janne Grunau
| jannau
| 2015-09-18 22:35
| Gare de l'Est
| TGV 9570
| from Karlsruhe
|-
|}

= Departures =
Please order chronologically by time of departure.

{| border="1" class="sortable"
! Name
! IRC
! Time
! Port
! Vessel
! Notes
|-
| Mc Fly Marty
| mcfly
| 1985-10-26 01:22
| Hill Valley, California
| DeLorean OUTATIME
| to Hill Valley
|-
| Tim Miller
| drasticactions
| 2015-09-20 16:45
| CDG airport
| AF 338
| to BOS
|-
| Janne Grunau
| jannau
| 2015-09-20 17:25
| Gare de l'Est
| TGV 9577
| to Karlsruhe
|-
| David Fuhrmann
| d-fu
| 2015-09-20 17:25
| Match found
| -- same train --
|
|-
| Francois Cartegnie
|
| 2015-09-20 17:49
| Gare de Lyon
| TGV 6949
|
|-
| Rémi Denis-Courmont
| courmisch
| 2015-09-20 19:00
| CDG airport T2D
| AY 874
| to HEL
|-
| Federico Hlawaczek
|
| 2015-09-21 10:05
| CDG airport
| UA 991
| to SFO
|-
| Rostislav Pehlivanov
| atomnuker
| 2015-09-21 10:13
| Gare du Nord
| TGV TMST
| to London
|-
| Konstantin Pavlov
| thresh
| 2015-09-21 10:40
| CDG airport T2E
| AF 84
| to SFO
|-
| Arwa Arif
| arwa
| 2015-09-21 10:50
| CDG airport
| EY 32
| to HYD
|-
| Ben littler
|
| 2015-09-21 13:30
| CDG airport
| AF 378
| to DTW
|-
| Henrik Gramner
| Gramner
| 2015-09-21 14:00
| CDG airport
| SK2572
| to Stockholm/ARN
|-
| Ronald S. Bultje
| BBB
| 2015-09-21 14:00
| CDG airport
| AF 6
| to NY/JFK
|-
| Thierry Foucu
| lotharkript
| 2015-09-22 10:05
| CDG airport
| UA 991
| to SFO
|-
|}

= Locals =
People who do not need to travel:

VDD15/Attendees

2015-09-06T17:00:59Z

ILEoo: /* Arrivals */

= Arrivals =
Please order chronologically by time of arrival.

{| border="1" class="sortable"
! Name
! IRC
! Time
! Port
! Vessel
! Notes
|-
| Arwa Arif
| arwa
| 2015-09-17 08:20
| CDG airport
| 9W 126
| from BOM
|-
| Tim Miller
| drasticactions
| 2015-09-17 08:35
| CDG airport
| DL 243 (AF 3655)
| from BOS
|-
| Rostislav Pehlivanov
| atomnuker
| 2015-09-17 10:17
| Gare du Nord
| TGV TMST
| from London
|-
| Kieran Kunhya
| kierank
| 2015-09-17 16:47
| Gare du Nord
| Eurostar
| from London
|-
| Henrik Gramner
| Gramner
| 2015-09-17 17:25
| CDG airport
| SK559
| from Copenhagen/CPH
|-
| David Fuhrmann
| d-fu
| 2015-09-17 20:54
| Gare de Est
| TGV 9552
|
|-
| Francois Cartegnie
|
| 2015-09-17 21:16
| Gare de Lyon
| TGV 6198
|
|-
| Konstantin Pavlov
| thresh
| 2015-09-17 22:30
| CDG airport T2C
| SU 2460
| from Moscow/SVO
|-
| Ronald S. Bultje
| BBB
| 2015-09-18 9:20
| CDG airport
| DL 400 (AF 3577)
| from NY/JFK
|-
| Thierry Foucu
| lotharkript
| 2015-09-18 10:45
| CDG airport
| UA 990
| from SFO
|-
| Federico Hlawaczek
|
| 2015-09-18 10:45
| CDG airport
| UA 990
| from SFO
|-
| Ilkka Ollakka
| ILEoo
| 2015-09-18 14:20
| AY 875
| from HEL
|-
| Rémi Denis-Courmont
| courmisch
| 2015-09-18 21:35
| CDG airport T2D
| AY 877
| from HEL
|-
| Janne Grunau
| jannau
| 2015-09-18 22:35
| Gare de l'Est
| TGV 9570
| from Karlsruhe
|-
|}

= Departures =
Please order chronologically by time of departure.

{| border="1" class="sortable"
! Name
! IRC
! Time
! Port
! Vessel
! Notes
|-
| Mc Fly Marty
| mcfly
| 1985-10-26 01:22
| Hill Valley, California
| DeLorean OUTATIME
| to Hill Valley
|-
| Tim Miller
| drasticactions
| 2015-09-20 16:45
| CDG airport
| AF 338
| to BOS
|-
| Janne Grunau
| jannau
| 2015-09-20 17:25
| Gare de l'Est
| TGV 9577
| to Karlsruhe
|-
| David Fuhrmann
| d-fu
| 2015-09-20 17:25
| Match found
| -- same train --
|
|-
| Francois Cartegnie
|
| 2015-09-20 17:49
| Gare de Lyon
| TGV 6949
|
|-
| Rémi Denis-Courmont
| courmisch
| 2015-09-20 19:00
| CDG airport T2D
| AY 874
| to HEL
|-
| Federico Hlawaczek
|
| 2015-09-21 10:05
| CDG airport
| UA 991
| to SFO
|-
| Rostislav Pehlivanov
| atomnuker
| 2015-09-21 10:13
| Gare du Nord
| TGV TMST
| to London
|-
| Konstantin Pavlov
| thresh
| 2015-09-21 10:40
| CDG airport T2E
| AF 84
| to SFO
|-
| Arwa Arif
| arwa
| 2015-09-21 10:50
| CDG airport
| EY 32
| to HYD
|-
| Ben littler
|
| 2015-09-21 13:30
| CDG airport
| AF 378
| to DTW
|-
| Henrik Gramner
| Gramner
| 2015-09-21 14:00
| CDG airport
| SK2572
| to Stockholm/ARN
|-
| Ronald S. Bultje
| BBB
| 2015-09-21 14:00
| CDG airport
| AF 6
| to NY/JFK
|-
| Thierry Foucu
| lotharkript
| 2015-09-22 10:05
| CDG airport
| UA 991
| to SFO
|-
|}

= Locals =
People who do not need to travel:

Documentation:Streaming HowTo New

2010-09-08T05:55:01Z

ILEoo: Simplify example cli transcoding command

This documentation explains how to stream, transcode and save streams using [[VLC media player]].

'''NOTE: This is work in progress. For a more complete, yet outdated, documentation on Streaming with VLC please see the old [[Documentation:Streaming HowTo|Streaming HowTo]].'''

==Introduction==
VLC media player is able to stream, transcode and save different media streams. For more information about the formats and codecs supported please see the [http://www.videolan.org/streaming-features.html VideoLAN Streaming Features list].

==Transcoding==
[[Transcode|Transcoding]] is the process of taking a media file or stream and converting it to a different format or bitrate. There are two methods for transcoding in VLC, via the GUI (VLC's default interface) or via the commandline. The term ''transcode'' by itself normally refers to converting one media format to another and saving the output to a file (i.e. no streaming involved).

===Transcoding using the GUI===
One of the methods of transcoding is via the GUI. To access this:
#In VLC, go to "Media >> Convert / Save..." (Ctrl+R).
#Add the input file(s) or stream(s) you want to transcode. Press "Convert / Save".
#In the "Convert" windows specify the destination file name (including file extension - e.g. on Windows "C:\out.mp3").
#Select the desired codec from the profile list. To check/edit the settings of a given profile press the "Edit selected profile" button. Profiles can also be added/deleted.
#Press "Start".
If the profile settings were compatible and transcoding was sucessful a playable destination file should be created.

===Using the commandline===
Another method of transcoding is via the commandline. This is more flexible than via the GUI as it enables full usage of the modules and options available in VLC.

To use the VLC's commandline you need to have access to the commandline interface, for example via a shell.
====Windows-based systems====
On Windows-based system Command Prompt can be used. This can be found in the "Accessories" folder of the Start menu. Alternatively by going to "Start >> Run..." or pressing "Windows key + R", entering "cmd" into the text field and press "OK" or Enter.

Once the Command Prompt window is opened navigating to the folder/directory where VLC is located is easiest for using the commandline as only "vlc.exe" or "vlc" (as the .exe part is assumed) needs to entered to run VLC. If VLC is installed in the default location (on a 32-bit system) running:
cd "C:\Program Files\VideoLAN\VLC"
Should change to the directory where vlc.exe is located.

====Unix systems====
On Unix-based system (such as Linux and Mac OS X) a terminal window can be opened. Running "vlc" should be all that is needed to open VLC.

====Transcoding commandline string structure====
A typical commandline string for converting a file to another format is:
vlc --sout "#transcode{[TRANSCODE_OPTIONS]}:std{[OUTPUT_OPTIONS]}" INPUT
Where <tt>INPUT</tt> is the input stream, <tt>[TRANSCODE_OPTIONS]</tt> are the options set for the desired output format, codecs, bitrate etc. and <tt>[OUTPUT_OPTIONS]</tt> are the option set for the output type. <tt>--sout</tt> is the stream output commandline option.

====Example commandline: Converting an audio file to a MP3 file====
An example usage might be converting an audio file to a MP3 file:
vlc --sout "#transcode{acodec=mp3,ab=128,channels=2,samplerate=44100}:std{access=file,mux=raw,dst=OUTPUT}" INPUT
Where INPUT is the input file ans OUTPUT is the destination file (for example "C:\out.mp3" on Windows or "/home/username/out.mp3" on a *nix system).
The above sout string is the default "Audio - MP3" profile setting accessible via the GUI. It will convert an audio input to a 128kbps CBR MP3 file (sample rate 44100Hz, 2 channels).
====Other examples commandline strings====
Convert an audio input to an uncompressed WAVE (*.wav) file:
vlc --sout "#transcode{acodec=s16l,channels=2,samplerate=44100}:std{access=file,mux=wav,dst=OUTPUT}" INPUT
Convert an audio input to an AAC file (MP4 container):
vlc --sout "#transcode{acodec=mp4a,ab=128,channels=2,samplerate=44100}:std{access=file,mux=mp4,dst=OUTPUT}" INPUT

==Streaming==

===Streaming using the GUI===

Basically, to stream using the GUI, open VLC, then Media [menu] -> Streaming -> (select any media to stream, then hit Stream button). At this point it asks you *how* to stream it. The most common way is via HTTP. To stream via HTTP, click on "Destinations", choose HTTP from the drop down as a "New Destination" and click add. Now if you are streaming video, you will want to stream to something like "/go.mpg." Now hit stream, and you should be able to use a different instance of VLC as a client, and listen to that stream now (ex: on the same computer it would be "Media" [menu] -> Open Network Stream -> "http://localhost:8080/go.mpg" and it should work.

A few caveats:
* even though you click on "enable transcoding" and specify some other container type, it will give you the flv container type unless you use a suffix, like ".mpg" [http://forum.videolan.org/viewtopic.php?f=14&t=80722 ref]
* VLC client cannot receive a stream at less than 5 fps, though it can stream it all right for those speeds (and other players can receive it). [http://trac.videolan.org/vlc/ticket/214 ref].
* NB that *many* times when using the GUI to stream it will choose the wrong thing. Like if you give a path of "/" it will use FLV container type (which you probably didn't want, and which overrides your transcoding settings' container type *silently*), and if you give it "/go.mp4" it will *silently* fail (you can look at the log messages to see what the error is--it says "mp4 type is not supported except for files"). It is tricky to get it setup. It's like the GUI sets it up wrong most times. Here is a [[http://forum.videolan.org/viewtopic.php?f=14&t=80722 laundry list]].

===Streaming using the command line interface===

If you want to stream using the command line interface instead of the GUI (more control, for example you can specify your own container), you can "sniff" the options the GUI is using by opening up the logger (Tools menu -> message) and setting verbosity level to "2" then doing a stream. It will output debug messages that basically tell you what it is using for command line parameters, then you will take those same parameters and use them on the command line (you may need to add quotation marks around words that have spaces in them, and you may need to add --'s).

An example is:

<pre>
C:\Program Files\VideoLAN\VLC>vlc "C:\Users\Public\Videos\Sample Videos\Wildlife.wmv" :sout=#transcode{vcodec=h264,acodec=mp3,ab=128,channels=2,samplerate=44100}:http{dst=:8090/go.mpg}
</pre>

=== More Links ===

The [[http://www.videolan.org/doc/videolan-howto/en/ch04.html Documentation chapter 4]].

==See also==
*[[Documentation:Streaming HowTo|Streaming HowTo]] - Outdated HowTo for streaming with VLC
*[[Transcode]] - Further information about transcoding with VLC

Template:Documentation streaming howto toc

2010-09-08T05:52:46Z

ILEoo: Add iphone example to toc

{| border="0" cellspacing="0" cellpadding="1"
!<big>[[Documentation:Streaming_HowTo|VLC Streaming HowTo]]</big> 
|-
! Introduction
|-
|[[Documentation:Streaming HowTo/Streaming, Muxers and Codecs|Streaming, Muxers and Codecs]]
|-
! Main
|-
|[[Documentation:Streaming HowTo/Easy Streaming|Easy Streaming]]
|-
|[[Documentation:Streaming HowTo/Advanced Streaming Using the Command Line|Advanced Streaming Using the Command Line]]
|-
|[[Documentation:Streaming HowTo/Command Line Examples|Command Line Examples]]
|-
! VLM
|-
|[[Documentation:Streaming HowTo/VLM|VLM - Multiple Streaming and Video on Demand]]
|-
! Tutorials and examples
|-
|[[Documentation:Streaming HowTo/Receive and Save a Stream|Receive and Save a Stream]]
|-
|[[Documentation:Streaming HowTo New|Convert files to other formats]]
|-
|[[Documentation:Streaming HowTo/Stream a File|Stream a File]]
|-
|[[Documentation:Streaming HowTo/Stream a DVD|Stream a DVD]]
|-
|[[Documentation:Streaming HowTo/Stream a DVB Channel|Stream a DVB Channel]]
|-
|[[Documentation:Streaming HowTo/Stream from Encoding Cards and Other Capture Devices|Stream from Encoding Cards and Other Capture Devices]]
|-
|[[Documentation:Streaming HowTo/Stream from a DV Camcorder|Stream from a DV Camcorder]]
|-
|[[Documentation:Streaming_HowTo/Streaming_for_the_iPhone|Streaming for the iPhone]]
|-
! IPv6
|-
|[[Documentation:Streaming HowTo/Streaming over IPv6|Streaming over IPv6]]
|-
|align="right"|[[Template:Documentation_streaming_howto_toc|View this alone]]
|}<includeonly>
 
</includeonly>

Documentation:Streaming HowTo/Streaming for the iPhone

2010-09-08T05:50:19Z

ILEoo: Modify example commandlines for littlebit simpler form

{{RightMenu|documentation streaming howto toc}}

Note: this functionality is intended to be part of the 1.2 release, so at the time of writing it is only available in nightly builds.

== Streaming for the iPhone ==

This functionality allows you to link VLC's transcoding capability with a segmenter which will in turn create the series of files needed for http live streaming to the iPhone.

Unlike most of VLC's streaming, it doesn't actually stream the files, but assumes that you have your own webserver which will do that job.

Notes from the developer:
*This has only been tested using H.264 w/MP3 or AAC audio using mux=ts, and raw MP3 using mux=raw
*I've been mostly an FFMPEG guy till now, so forgive me if my VLC understanding/terminology is somewhat off.
*This plug-in should support both Live and non-live HTTP Live streaming feeds, depending on the options passed to the module.

Notes from the community:
*The user running vlc needs to have read/write/delete permissions on the directory where the .m3u8 playlist and .ts file segments will be created and deleted on the webserver.

=== Instructions ===

The name of the module is livehttp, and is specified by specifying "access=livehttp"

=== Options ===

splitanywhere= (default: false)
*Tells livehttp to split the stream anywhere, not just on video keyframes. Currently required to be set to true for audio-only streams and not recommended (probably won't work) for video streams.

seglen= (default: 10)
*How many seconds of audio/video each segment should contain. Apple recommends 10, I have been using 5.

numsegs=(default: 0)
*The number of segments to keep in the index file. The default of 0 keeps all segments in the index (which you would want for non-live streaming). For live streaming the specification require at least 3.

delsegs= (default: true)
*Delete segments as they are no longer needed. If numsegs=0 this parameter is ignored (as all segments are assumed to be needed)

dst=
*This is actually an option to the access std module. The path of the segment files to write. The # characters get replaced with the segment number. So a path of "seg-###.ts" will end up with files called "seg-001.ts, seg-002.ts, seg-003.ts" etc.

index=
*The path of the index file to write, which will contain the "playlist" of video/audio segments to stream. Recommended to end in .m3u8 by specifications. This is the file the <video> tag should be pointed to.

index-url=
*This is the URL that corresponds to the dst above (how a browser would access the dst file). The # characters get replaced same as in the dst parameter. Note: The filename portion of this URL will most likely need to be in the exact same format as the dst parameter. So for example if dst=/www/seg-##.ts then the index-url should be something like index-url=http://mydomain.com/streams/seg-##.ts (Note the same number of # characters)

rate-control=(default: false)
*If set to false the there is no rate control (the muxer sends the data as fast/slow as it can to the streamer). If set to true the muxer should do rate-control to control the speed to muxed audio/video is sent to the streamer. I'm a little unsure what the "best" setting for this parameter is when re-streaming an existing video stream. I've been leaving it at false...

=== Examples ===
All examples assume the following:
*The Web Server root directory is /var/www
*The domain name of the web server is mydomain.com
*The stream segments & index files will be written into /var/www/streaming/ and will be accessed via http://mydomain.com/streaming/...
*The destination stream name index file will be called "mystream.m3u8"
*The following HTML will allow you to view the video based on the above on an iPhone:

Re-stream a live video feed:
% '''vlc -I dummy --mms-caching 0 http://www.nasa.gov/55644main_NASATV_Windows.asx vlc://quit --sout='#transcode{width=320,height=240,fps=25,vcodec=h264,vb=256,venc=x264{aud,profile=baseline,level=30,keyint=30,ref=1},acodec=mp3,ab=96}:std{access=livehttp{seglen=10,delsegs=true,numsegs=5,index=/var/www/streaming/mystream.m3u8,index-url=http://mydomain.com/streaming/mystream-########.ts},mux=ts{use-key-frames},dst=/var/www/streaming/mystream-########.ts}' '''

Create a VOD stream:
(Non-live. When this command finishes, all the segments should have been created and the index file contain pointers to all of them)
% '''vlc -I dummy /var/myvideos/video.mpg vlc://quit --sout='#transcode{width=320,height=240,fps=25,vcodec=h264,vb=256,venc=x264{aud,profile=baseline,level=30,keyint=30,ref=1},acodec=mp3,ab=96}:std{access=livehttp{seglen=10,delsegs=false,numsegs=0,index=/var/www/streaming/mystream.m3u8,index-url=http://mydomain.com/streaming/mystream-########.ts},mux=ts{use-key-frames},dst=/var/www/streaming/mystream-########.ts}' '''

Re-stream a live audio feed:
% '''vlc -I dummy --mms-caching 0 http://www.nasa.gov/55644main_NASATV_Windows.asx vlc://quit --sout='#transcode{acodec=mp3,ab=96}:duplicate{dst=std{access=livehttp{seglen=10,delsegs=true,numsegs=5,index=/var/www/streaming/mystream.m3u8,index-url=http://mydomain.com/streaming/mystream-########.mp3},mux=raw,dst=/var/www/streaming/mystream-########.mp3},select=audio}' '''

===Formats supported by the iOS===
See the [[iPhone]] article for a list of supported codecs as well as [http://developer.apple.com/iphone/library/documentation/networkinginternet/conceptual/streamingmediaguide/FrequentlyAskedQuestions/FrequentlyAskedQuestions.html Apple's HTTP Live Streaming FAQ].

===Possible improvements/fixes===

from the developer:
*Have the module auto-detect audio only streams, so the splitanywhere option is not required.
*I'm not sure I am doing the right thing with the Win32 rename function. Linux (I believe) allows me to rename a file over an existing file, even if the existing file is in use. Win32 is not so friendly. This ability is useful for updating the index file at same time it may be currently being read by the HTTP server serving the files.
*Break the dst= and index= parameter into seperate filename/directory entries, so you only need to specify the filename format once. (instead of once for the dst= parameter, and once for the index-url= parameter)

from the community:
*Have the module detect the codecs used and warn the end user if they are not compatible with the iPhone/iPod Touch/iPad.
*Possible multibitrate implementation that meets the iPhone SDK specs so app developers can use VLC to host streams for their apps.

fixes:
*Audio only streams do not validate with Apple's mediastreamvalidator. Audio streams are missing id3tags and timestamps. Check with command, "mediastreamvalidator validate --timeout=60 [url]"

{{Documentation}}