[MPlayer-advusers] mencoder reads wrong frame rate flag fromQuicktime files

[Dominic Bird]

> -----Original Message-----
> From: mplayer-advusers-bounces at mplayerhq.hu [mailto:mplayer-advusers-
> bounces at mplayerhq.hu] On Behalf Of compn
> Sent: 26 July 2010 15:44
> To: mplayer-advusers at mplayerhq.hu
> Subject: Re: [MPlayer-advusers] mencoder reads wrong frame rate flag
> fromQuicktime files
> 
> >On Mon, 26 Jul 2010 09:28:59 +0100, Dominic Bird wrote:
> >>On Fri, 23 Jul 2010 21:33:44 +0200, Reimar Döffinger wrote:
> >>
> >> I can't test it because the decoder does not work at all for me on
> >> Linux (though it might just be that the qthtml.dll etc. files from
> the
> >> codec pack are too old for that codec), but here's a patch that
> builds
> >> a similar imagedesc with -demuxer lavf.
> >> MPlayer will print a hexdump of that data, the differences between
> the
> >> one with -demuxer mov and -demuxer lavf should be trivial to see, if
> it
> >> does not work it's just a matter of finding out which other fields
> need
> >> to be filled in.
> >> I'd assume at least the "vendor" is necessary in addition.
> >>
> >Thanks for the help. Unfortunately I am not a developer so I was
> hoping it might be taken on as a bug request and fixed. Ive posted it
> in the mplayer/mencoder bug tracker but looks like nothing has been
> touched there for a long time...
> 
> reimar committed this, so its being worked on. there are still some
> bugs.

Personally the only problem im having is the frame rate being read incorrectly with the mov demuxer. Everything else works perfectly (binary codecs/prores/dvcpro hd/xdcam anything I throw at it) so not sure if much needs changing. I know what the actual problem is as I've been chatting to the guys from mediainfo about it.

Basically when MediaInfo or the MOV demuxer from mencoder sees VFR flagged they seem to take an average of first/middle/last frame rates. With ProRes HD files they are VFR because the first and last frames are VFR, but the rest are constant, so it should just take the mean fps and all would be solved :)