[MPlayer-users] h.264 playback issues

[Guillaume POIRIER]

Hi,

On 2/20/06, Alexander Roalter <roalter at cs.tum.edu> wrote:

[..]

> The Video was created with the following command:
>
> mencoder test.avi-0000 -o t.mp4 -oac copy -ovc x264 -x264encopts
> bitrate=500 -of lavf -lavfopts
> i_certify_that_my_video_stream_does_not_use_b_frames
>
> (the latter I did on the program's *strong* suggestion, and since
> mencoder's manpage gives bframes=<0-16> with the number of B-Frames as
> default 0, I've not included it here, since I *assume* there won't be
> any (correct me if I'm wrong)

You are right. I think the problem lies between MEncoder and lavf: MP4
is not quite fully funtionnal, and I think it generates broken files.
You'd be much better off muxing the files with gpac / mp4box.


> I would be glad for any suggestion.
>
> cheers,
> Alex
>
> BTW: is there any way to specify an aspect ratio as it is possible with
> lavc? or do I have to prescale the video beforehand.

use "autoaspec" and '-aspect 16/9' for instance.

Guillaume
--
Just because code is syntactically "valid" GNU C doesn't mean gcc can
always compile it.
  Steven Bosscher - 2005-01-01
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11203#c14