<html> <head> <style> .hmmessage P { margin:0px; padding:0px } body.hmmessage { font-size: 10pt; font-family:Verdana } </style> </head> <body class='hmmessage'> Hi Stefan, thank you for your e-mail. I understand what you mean now. I will try to do both and will tell you the result. Thank you again for the support. - Zelalem S. > Date: Sat, 18 Jul 2009 22:51:03 +0300 > From: ensonic@hora-obscura.de > To: gstreamer-devel@lists.sourceforge.net > Subject: Re: [gst-devel] How can I synchronize video and audio > > Zelalem Sintayehu schrieb: > > Hi Stefan, thank you for your response. You know when I didn't get help for some time, I had lost my hope and abandon it. 2 second is considerable time. Anyway, I am sorry for my sily question, but I don't understnad what you mean by "narrow it down"? Also how can I "Check if you receive the material properly timestamped"?. > > > > Thank you again for your help. > > Don't expect that everything is ready. I don't have an explanation for the > problem you see. As nobody else was answering, it seems that you will have to > figure our what the probelm is. With "narrow it down", I was suggsting to try to > make simpler/different variants to see if you can pinpoint the problem. E.g. > recod to a mp4 with mp4mux to see if it might be a problem in avimux. > > Also you should not start two pipelines on the src side, instead of > Source: > Audio: > gst-launch-0.10 > -v alsasrc ! queue ! audio/x-raw-int,rate=8000,channels=1,depth=8 ! > audioconvert ! alawenc ! rtppcmapay ! udpsink port=5002 > Video: > gst-launch > v4l2src ! video/x-raw-rgb,width=320,height=240 ! queue ! videorate ! > video/x-raw-rgb,rate=15/1 ! ffmpegcolorspace! ffenc_h263p ! rtph263ppay > ! udpsink port=5000 > > just do > > Source: > gst-launch-0.10 > -v alsasrc ! queue ! audio/x-raw-int,rate=8000,channels=1,depth=8 ! > audioconvert ! alawenc ! rtppcmapay ! udpsink port=5002 > v4l2src ! video/x-raw-rgb,width=320,height=240 ! queue ! videorate ! > video/x-raw-rgb,rate=15/1 ! ffmpegcolorspace! ffenc_h263p ! rtph263ppay > ! udpsink port=5000 > > Then both livesource use the same clock to timestamp buffers. > > Stefan > > > > > > - Zelalem S. > > > > > >> Date: Sat, 18 Jul 2009 19:03:10 +0300 > >> From: ensonic@hora-obscura.de > >> To: gstreamer-devel@lists.sourceforge.net > >> Subject: Re: [gst-devel] How can I synchronize video and audio > >> > >> Zelalem Sintayehu schrieb: > >>> Hi guys, I wanted to record video coming from network into avi file, > >>> and wrote some code. The file is created but it is unsynchronized (by > >>> almost 2 second) and it is annoying. I am using avimuxer. I also used > >>> buffer for the audio source hoping to reduce the time difference. The > >>> following is the source and destination codes (the command line version > >>> of my code). Is there anything that I should consider to avoid this > >>> problem. Please help me. If you think that I should use other file > >>> formats and video muxer, please advice me. > >>> > >>> Source: > >>> Audio: > >>> gst-launch-0.10 > >>> -v alsasrc ! queue ! audio/x-raw-int,rate=8000,channels=1,depth=8 ! > >>> audioconvert ! alawenc ! rtppcmapay ! udpsink port=5002 > >>> Video: > >>> gst-launch > >>> v4l2src ! video/x-raw-rgb,width=320,height=240 ! queue ! videorate ! > >>> video/x-raw-rgb,rate=15/1 ! ffmpegcolorspace! ffenc_h263p ! rtph263ppay > >>> ! udpsink port=5000 > >>> > >>> Destination: > >>> gst-launch-0.10 -v > >>> avimux name=mux ! filesink location=videoandaudio.avi sync=true {udpsrc > >>> port=5000 > >>> caps="application/x-rtp,media=(string)video,clock-rate=(int)90000,encoding-name=(string)H263-1998" > >>> ! queue ! rtph263pdepay ! > >>> 'video/x-h263,width=320,height=240,framerate=(fraction)25/1' ! queue} ! > >>> mux.video_0 {udpsrc port=5002 > >>> caps="application/x-rtp,media=(string)audio,payload=(int)96, > >>> rate=(int)8000, encoding-name=(string)PCMA" num-buffers=5000 ! queue ! > >>> rtppcmadepay ! 'audio/x-alaw, rate=(int)8000, channels=(int)1' ! queue} > >>> ! mux.audio_0; > >>> > >> try to narrow it down. Check if you receive the material properly timestamped. > >> Check if avimux handles timestamping correctly when muxing. > >> > >> STefan > >> > >>> Thank you. > >>> > >>> - Zelalem S. > >>> > >>> > > ------------------------------------------------------------------------------ > Enter the BlackBerry Developer Challenge > This is your chance to win up to $100,000 in prizes! For a limited time, > vendors submitting new applications to BlackBerry App World(TM) will have > the opportunity to enter the BlackBerry Developer Challenge. See full prize > details at: http://p.sf.net/sfu/Challenge > _______________________________________________ > gstreamer-devel mailing list > gstreamer-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/gstreamer-devel <hr />With Windows Live, you can organize, edit, and <a href='http://www.microsoft.com/middleeast/windows/windowslive/products/photo-gallery-edit.aspx' target='_new'>share your photos.</a></body> </html>