[mythtv] [PATCH] Plextor PX-TV402 / go7007 keyframe seek fix

[Torbjörn Jansson]

mythtv-dev-bounces at mythtv.org <> wrote:
>> Nathan Lutchansky wrote:
>>> Sorry, just to clarify, Jack, your approach of writing a sync frame
>>> only for MPEG4 I frames is correct.
> 
> This change seems to cause the mythtv Windows filters to lose audio
> synchronization (audio is delayed by up to a second).  I guess the
> problem is with the filters because there's no problems when playing
> back in Myth. 
> 
> - Jack

I asume you mean the filters i wrote (sf.net/projects/dsmyth)
I haven't followed this thread very closely, but is audio always out of sync
or only after you have seeked forward or back?

And it's not safe to asume that all keyframes is keframedist frames apart,
remeber the file can have been transcoded and cut.

Getting the audio and video timestamps right is a bit complicated, for
example the filters have to take into account that timestamps can have some
wierd values especialy at the begining of the file and just because the
seektable says there is a keyframe at a specific position doesn't mean that
is always the case (old bug in mythtv, fixed long ago)