On 3/9/08, Keith Richie <[EMAIL PROTECTED]> wrote:
>
> Try
>
> ffmpeg -i file.vob -vn -acodec vorbis -ac 2 -ab 160k out.ogg
Oddly enough, I had a VOB lying around here, so I tried it (it's ST
Enterprise episode(s) so it's mostly speech with some music).
> ffmpeg doesn't support multichannel vorbis encoding so the -ac 2 is
> needed. You can replace -ab with -aq if you want.
And I'm getting an average bit rate of 51. something here, using
ffmpeg from debian-multimedia.org.
Oddly enough:
Input #0, mpeg, from 'VTS_02_1.VOB':
Duration: 00:41:41.2, start: 0.192267, bitrate: 3434 kb/s
Stream #0.0[0x1e0]: Video: mpeg2video, yuv420p, 720x480 [PAR 32:27
DAR 16:9], 9800 kb/s, 59.94 tb(r)
Stream #0.1[0x20]: Subtitle: dvdsub
Stream #0.2[0x21]: Subtitle: dvdsub
Stream #0.3[0x80]: Audio: liba52, 48000 Hz, 5:1, 448 kb/s
Stream #0.4[0x81]: Audio: liba52, 48000 Hz, stereo, 192 kb/s
Output #0, ogg, to 'out.ogg':
Stream #0.0: Audio: vorbis, 48000 Hz, stereo, 160 kb/s
Stream mapping:
Stream #0.3 -> #0.0
No accelerated IMDCT transform found
Press [q] to stop encoding
size= 51kB time=8.7 bitrate= 47.8kbits/s
And it doesn't seem to go much above 51 kbits/sec. Maybe try another
stream (stream 4 here) but I don't seem to know how that is done or
whether it will be helpful.
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