Many thanks for the reply. So I did: $ avconv -i in.ogv -mbd rd -trellis 2 -cmp 2 -subcmp 2 -g 100 -pass 1 -b:v 5M -b:a 96k out.avi
- that does run, but results in a file that's roughly half the size than from doing: $ avconv -i in.ogv -mbd rd -trellis 2 -cmp 2 -subcmp 2 -g 100 -pass 1 -b 256k out2.avi Curiously, mplayer claims that the first is "112.8 kbps (13.8 kbyte/s)" while the second, larger file is "112.6 kbps (13.8 kbyte/s)". What might account for the discrepancy in file sizes I have no idea, but maybe I've just hit the maximum possible bitrate for the input file? Does that sound sensible? It's a recordmydesktop capture of action taking place in a browser. James > Date: Tue, 5 Mar 2013 08:33:01 +0100 > To: [email protected]; [email protected] > From: [email protected] > Subject: Re: [libav-tools] OGV to AVI - bitrate > > > On Mon, 4 Mar 2013 21:02:41 +0000, James Gibbon <[email protected]> wrote: > > Thanks. Output attached. > > > > James > > > > This is the important error message > [ac3 @ 0x8a30420] invalid bit rate > > You must select audio bitrate, e.g. -b:a 96k > > -- > Anton Khirnov
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