The VideoLAN Forums

Posted: **03 Jan 2009 18:11**

Hello,

i'm using ubuntu intrepid with VLC 0.9.4 and i 'm trying to play the DVC100 streaming with VLC.

I could make mplayer play the DVC100 streaming using v4l2 module with the following command:

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mplayer tv:// -tv fps=25:buffersize=64:driver=v4l2:norm=PAL:audiorate=44100:immediatemode=0:device=/dev/video1:forceaudio:adevice=/dev/dsp1

I tried the following command as i found some help in the wiki http://wiki.videolan.org/Documentation:Modules/v4l2.

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 vlc v4l2:// :v4l2-dev=/dev/video1 :v4l2-adev=hw:1,0 :v4l2-standard=2 :v4l2-fps=25 :v4l2-samplerate=44100 :v4l2-audio-method=2

But i get the following error and no video:

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[00000409] v4l2 demux error: cannot get audio input characteristics (Argument invalide)

ALSA show me the following devices:

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laurent@dell-inspiron1525:~$ arecord -l
**** Liste des CAPTURE périphériques ****
carte  0: Intel [HDA Intel], périphérique 0 : STAC92xx Analog [STAC92xx Analog]
  Sous-périphériques: 3/3
  Sous-périphérique: #0: subdevice #0
  Sous-périphérique: #1: subdevice #1
  Sous-périphérique: #2: subdevice #2
carte  1: DVC100 [DVC100], périphérique 0 : USB Audio [USB Audio]
  Sous-périphériques: 1/1
  Sous-périphérique: #0: subdevice #0

Can you give some help please ?

Posted: **27 Jun 2009 11:34**

I have no problems to use Dazzle DVC100 with VLC using the same command:

david@david-desktop:~$ vlc v4l2:// :v4l2-dev=/dev/video0 :v4l2-adev=hw:1,0 :v4l2-standard=2 :v4l2-fps=30 :v4l2-samplerate=44100 :v4l2-audio-method=2
VLC media player 0.9.9a Grishenko
[00000001] main libvlc debug: VLC media player - version 0.9.9a Grishenko - (c) 1996-2009 the VideoLAN team
[00000001] main libvlc debug: libvlc was configured with ./configure '--build=i486-linux-gnu' '--enable-maintainer-mode' '--enable-release' '--prefix=/usr' '--enable-libtool' '--enable-fast-install' '--with-binary-version=2ubuntu1' '--disable-update-check' '--disable-gnome' '--disable-gtk' '--disable-familiar' '--disable-fb' '--enable-ggi' '--enable-sdl' '--enable-esd' '--enable-mad' '--enable-jack' '--enable-pulse' '--enable-lirc' '--enable-a52' '--enable-aa' '--enable-dvbpsi' '--enable-mozilla' '--with-mozilla-pkg=libxul-plugin' '--disable-kde' '--enable-mp4' '--enable-dvb' '--disable-satellite' '--enable-ogg' '--enable-vorbis' '--enable-shout' '--enable-qt4' '--disable-slp' '--enable-flac' '--disable-skins' '--disable-basic-skins' '--enable-skins2' '--enable-freetype' '--enable-mkv' '--enable-speex' '--enable-caca' '--enable-live555' '--enable-libmpeg2' '--enable-fribidi' '--enable-cdio' '--enable-mod' '--enable-theora' '--enable-modplug' '--enable-dvdnav' '--enable-gnutls' '--enable-ffmpeg' '--enable-ncurses' '--enable-smb' '--disable-gnomevfs' '--enable-bonjour' '--enable-mpc' '--enable-vcd' '--enable-vcdx' '--enable-notify' '--enable-twolame' '--enable-faad' '--disable-zvbi' '--enable-telx' '--enable-mediacontrol-bindings' '--disable-atmo' '--enable-taglib' '--enable-libass' '--enable-libdca' '--enable-realrtsp' '--disable-dv' '--enable-x264' '--enable-alsa' '--enable-v4l' '--enable-v4l2' '--enable-pvr' '--enable-svgalib' '--enable-dvd' '--without-dvdcss' 'build_alias=i486-linux-gnu' 'CFLAGS=-g -O2' 'LDFLAGS=-Wl,--as-needed' 'CPPFLAGS=' 'CXXFLAGS=-g -O2'
[00000001] main libvlc debug: translation test: code is "es"
[00000001] main libvlc: Ejecutar vlc con el interfaz por defecto. Usa 'cvlc' para usar vlc sin interfaz.

Im using video0 and fps=30 to get xbox360 videos.
Maybe you have to install the device like i did. Read this web page: http://ubuntuforums.org/showthread.php?t=1101788

There is like a second of lag, but it works properly.
Good luck

Posted: **22 Feb 2010 19:11**

Anyone have a clue as to why I'm not getting a new video device when the Dazzle is plugged in?

I've got v4l2 installed and running Ubuntu 8.04 which I believe _should_ work, as per the info above.

Any suggestions would be appreciated.

Cheers!

Posted: **24 Feb 2010 17:44**

You need to start playback after the device is detected.

Posted: **09 Mar 2010 19:42**

Hi,
i'm using VLC media player 1.0.2 Goldeneye and this worked 4 me:
cvlc v4l2:///dev/video1 --sout="#transcode{vcodec=mp4v,vb=800,scale=2,acodec=mpga,ab=128,channels=2}:std{access=http,mux=asf,dst=0.0.0.0:8080/stream.mpg}"

If u don't want to transcode:
cvlc v4l2:///dev/video1 --sout="#std{access=http,mux=asf,dst=0.0.0.0:8080/stream.mpg}"

I used the command line cvlc but works with vlc too (same)

I just have problems with stream video quality (very bad). If i open the device from other program, like xawtv , quality is good.

Cheers

Award

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