Transcoding Bitrate

*nix specific usage questions
madru
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Transcoding Bitrate

Postby madru » 03 Dec 2012 17:12

Hi,

I need a little hand, I try to transcode a HD H.264 to MPEG2 SD with

cvlc -vvv ./test.ts --sout='#transcode{venc=ffmpeg,vcodec=mp2v,vb=1024,fps=25,width=768,height=576,deinterlace,acodec=mpga,ab=192}:standard{mux=ts,dst=239.0.0.1:1234,access=udp,sap,name="test"}'

or

cvlc -vvv ./test.ts --sout='#transcode{vcodec=mp2v,vb=1024,fps=25,width=768,height=576,deinterlace,acodec=mpga,ab=192}:standard{mux=ts,dst=239.0.0.1:1234,access=udp,sap,name="test"}'

the problem is that the bitrate is always ignored

If I use the H.264 codec

cvlc -vvv ./test.ts --sout='#transcode{venc=ffmpeg,vcodec=h264,vb=1024,fps=25,width=768,height=576,deinterlace,acodec=mpga,ab=192}:standard{mux=ts,dst=239.0.0.1:1234,access=udp,sap,name="test"}'

the bitrate is correctly set.

Any ideas ?

THX

M

madru
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Re: Transcoding Bitrate

Postby madru » 04 Dec 2012 09:25

nobody ?

is it possible that the MPEG2 encoder is broken?

nfrancia87
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Re: Transcoding Bitrate

Postby nfrancia87 » 04 Jun 2013 16:38

try --sout-transcode-vb=1024 --sout-transcode-venc=ffmpeg --sout-transcode-vcodec-mp2v


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