[mythtv] Question about the nuv seektable and keyframes

[Torbjörn Jansson]

I'm working on the seeking in my directshow filter and after looking at the
nuv seektable i have some questions.

The first entry in the seektable with keyframe_number=0 but there is atleast
audio data before the position it points to, i know its not much data but
anyway.
I have asumed that keyframe=0 is the begining of both audio and video data.

What does MythTV do when it seek to the begining? Does it seek to keyframe 0
and ignore the audio before that?

If i'm going to build the seektable manualy i just have to look for video
sync frames and then calculate the keyframe number and position?
What about the rtjpeg sync frame ("RTjjjjjjjj") just before the video sync?
Do i have to care about that one too?