[MPlayer-users] recoding script for DVD/SVCD/VCD
rcooley at spamcop.net
Fri Jan 2 15:21:30 CET 2004
On Thu, 01 Jan 2004 18:42:20 +0100
Martin Emrich <martin at emmerator.dyndns.org> wrote:
> > Hmm... I looked through it, and saw a few things that look wrong.
> > Mainly, you seem to use a keyint of 132 for all three
> > (DVD/SVCD/VCD)...
> Yes, the mplayer manpage says: "...For a strict MPEG1/2/4 compliance
> this would have to be <=132". Which values would be optimal for
> standalone players?
Well, you should look-up the specs for VCD/SVCD/DVDs. For VCD/SVCD, I
believe you need one keyframe every second to be within spec... So
keyint=25 for PAL, and keyint=30 for NTSC.
On my hardware DVD-player (Apex AD1225, NTSC), seeking backwards will
not work normally with a keyint >30. However, I prefer to cheat, and
use a keyint of 60... That way, I am not able to seek backwards at 2X,
but 4X or greater still works.
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