The VideoLAN Forums

I am trying to capture the output of a Sony 4K SNC-VM772R security camera that streams H264/AAC over RTSP. If I just play the RTSP stream with VLC I get clear picture and sound. However if I try to save to a file I only get picture. I have found that I can demonstrate the problem with any sout targe...

Thanks Rémi, that's great news. I'll give it a try.

ffmpeg can do webm streaming. You can stream live video using something like VLC > ffmpeg > stream_m.
More details here...
http://code.google.com/p/stream-m/

The above worked on one PC but not another. I have filed a bug report http://trac.videolan.org/vlc/ticket/5068 . I have another solution which is to use mencoder/mplayer instead of VLC. Here is the command to just play video and audio capture... mplayer tv:// -tv driver=v4l2:width=720:height=576:nor...

I am streaming live video from a MacBook Pro using qtcapture as a source. /Applications/VLC.app/Contents/MacOS/VLC qtcapture:// ...etc... There isn't any sound being streamed. I found an old dev list post indicating that the original version did not capture sound. http://mailman.videolan.org/piperma...

I am used to VLC on Windows and Linux but the Mac version of 1.1.7 seems a bit different. When I go to Open Capture Device, Check Streaming then Setttings..., Stream, I am only offered HTTP, MMSH, UDP and RTP as stream types. I don't want any of these. I want Icecast. Am I missing something? Where h...

Thanks that works a treat :-) The actual command I got to work was... padsp vlc v4l2:// :v4l2-dev="/dev/video0" --input-slave oss:///dev/dsp or padsp vlc v4l2:// :v4l2-dev="/dev/video0" :input-slave="oss:///dev/dsp" I still have a strange problem in that it only works i...

Pulse audio output works fine for me. It is audio capture that isn't working.

If I run the command vlc alsa://pulse then I get broken, choppy audio. If I look at the "Recording" tab in pavucontrol (the Pulse volume control applet) then the meter for Alsa plug-in [vlc] keeps flickering as if it is only recognised intermittently. VLC version VLC version 1.1.2 The Lugg...

It is certainly possible to extract audio only. Go to Advanced File Open then at the bottom of the file dialogue select Stream from the drop-down menu to the left of the PLAY button. Select File as the stream output, OGG for the encapsulation, Vorbis for the codec then press STREAM. This will give y...

I will soon be attempting to uplink a webcast using mobile broadband from a venue that can't provide me a decent internet connection. I tried using a RTP/UDP stream to link to the server and it sort of worked. Apparently UDP packets can arrive out-of-order which is probably a bad thing for a webcast...

0.9.x on Windows (still) has a problem with x264 encoding. Please use 0.8.6i. Johan Thanks. I just tried 0.8.6i and it works fine. I know that earlier versions of 0.8.6 didn't work in this particular application, which is as an uplink to a Wowza streaming server. I think I had tried 0.8.6d before a...

I have found this problem on two entirely different installations of VLC 0.9.8a on Vista. Steps to reproduce: 1) Open capture device (test by playing it) 2) Select option to stream 3) Paste the following stream options in the text box at the bottom of the Stream tab :sout=#transcode{vcodec=h264,vb=1...

My V4L2 device needs input 1 selected to play. This works if I set it in Advanced Options and play locally from the Open Capture Device dialogue. However, if I choose the Stream option instead then I don't get input 1 selected. It appears that the Advanced Options are forgotten in this case. This is...

It seems the card did have an audio input after all. I am logging into the PC remotely using Nomachine so I couldn't check it myself. So we now have audio to match the video.

Thanks for the useful info though. I'm sure I'll need it one day, for example, if I need a sound input with mixer controls.

I am trying to capture audio and video from an external source. It seems the PVR card I am using doesn't have an audio input. I need to capture a composite video source with sound. Is there a way to make VLC get a picture from the PVR card and take audio from the regular sound card? A look through t...

OK. Thanks for shedding some light on this. That was most helpful. It looks like I was barking up the wrong tree.

Next step for me is to test an RTP/SDP feed from VLC to another client than the Wowza server and see if that works.

Can you put MP3 audio over RTP like this ?

Just done a quick Google and it appears that you can. It is described as "MPA".
http://www.dmn.tzi.org/ietf/mmusic/54/s ... -video.ppt

Summary: The SDP file produced when I select an MP3 codec appears to be broken resulting in a silent playback via a Wowza/Flash streaming server and client. MP4 codec produces the following output in the SDP file. a=rtpmap:97 mpeg4-generic/44100/2 a=fmtp:97 streamtype=5; profile-level-id=15; mode=A...

What line exactly breaks ?

The line where I added the comment.

I am running VLC 0.9.5 on Mandriva 2008 x64. I run the following command line to capture live sound and video and save to disk as an mp4 file. When I press the "Stop" button I get a crash. The mp4 file is then useless since the moov atom was never written to it. So I'm stuck. vlc -vvv v4l2...

On PClinuxOS I have VLC 0.8.4a compiled. I run the following command line to connect to my Icecast server. It connects sucessfully if I connect audio only using the command line below. vlc -vvv v4l:/dev/video:adev=/dev/dsp --sout '#transcode{acodec=vorbis,ab=96}:standard{access=shout,mux=ogg,url=sou...

I just had the same problem. I found this in another post, try adding

--with-wx-config=wx-config-unicode

to the config.

That seemed to fix it for me.

Is there a workaround for this? Can someone recommend a previous version of i420_rgb16.c that is known to work with GCC 3.3.1? I can maybe selectively undo whatever changes upset the compiler. It is not clear just by looking at the source code as to what did it since the error is reported at the clo...

I have managed to stream a theora/ogg file created with VLC to the new Icecast 2.2.0 server that supports Theora. I stream the file to the server using the command... oggfwd my.server.net 8010 pwd /test.ogg <test_stream.ogg Where my.server.net is the server address and pwd is the password. Now I wou...