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I'm not able to synchronize Audio streaming http out an UDP multicast input. Actual command is:

vlc.exe --quiet -I dummy --no-quiet-synchro --udp-caching=30000 udp://@239.255.100.101:7003 :sout=#transcode{vcodec=h264,scale=0.5,vb=768,ab=64,acodec=mp3,samplerate=44100,deinterlace,high-priority,audio-sync}:std{access=http,dst=0.0.0.0:8090/stream.flv}

Stream out begin synchronized, then lost synchronization. My question is: is it possible use ffmpeg A/V synchronization parameters like this (it seems does nothing):

vlc.exe --quiet -I dummy --no-quiet-synchro --udp-caching=30000 udp://@239.255.100.101:7003 :sout=#transcode{vcodec=h264,scale=0.5,vb=768,ab=64,acodec=mp3,samplerate=44100,deinterlace,high-priority}:std{access=http,mux=ffmpeg{mux=flv,vsync=1},dst=0.0.0.0:8090/stream.flv}

Alberto

What OS and VLC version are you using?

I am seeing a similar problem using Ubuntu 10.10 Maverick ,VLC 1.1.4 ,
But not a problem on Windows XP VLC 1.1.4 or Ubuntu Lucid 10.04 VLC 1.0.6

OS : Windows 2003 erver
VLC v. 1.0.5

I suppose the issue is about some properties of my MPEG-TS input format but I cannot change it and I hope ffmpeg muxing is able to manage this stream better then VLC

The audio-sync problems seem unrelated, I did not have a problem with Win XP/VLC 1.0.5