OT: transcode, ffmpeg, mencoder

Jim Hatfield subscriber at insignia.com
Tue Mar 9 02:47:04 PST 2004


On Mon, 8 Mar 2004 22:01:35 -0000 , in local.freebsd.questions you
wrote:

>#convert a quicktime file into an mpg
>mencoder -of mpeg -o example.mpg -oac mp3lame -ovc lavc -lavcopts
>vcodec=mpeg1video example.mov
>mencoder -of mpeg -o example.mpg -oac copy -ovc lavc -lavcopts
>vcodec=mpeg1video
>example.mov
>mencoder -of mpeg -o example.mpg -oac pcm -ovc lavc -lavcopts
>vcodec=mpeg1video
>example.mov
>mencoder -of mpeg -o example.mpg -ovc lavc -lavcopts vcodec=mpeg1video
>-oac copy
>example.mov
>
>I am able to get the video, on some of these, but never the audio.

According to www.dvdrhelp.com, audio for vcd needs to be mpeg-1
layer 2, sampled at 44100 Hz and with a bitrate of 224 kbit/sec.

If you use -oac lavc you should be able to use lavcopts acodec=mp2.
The bitrate defaults to 224.




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