[mythtv-users] H.264 Recorded TV Program Image

[Michael T. Dean]

On 12/17/2014 10:54 AM, jim wrote:
> I wonder if others are experiencing this same scenario?
> When mythtv handles mpeg-2 encoded programs it appears to generate, or
> grab, a single-frame for the user to see when browsing the recorded TV
> programs. After a TV program has been transcoded to H.264 mythtv still
> plays the program without issue, but the single frame is often scrambled
> or nearly all  grey. If others have seen this too, does anyone know of a
> way to achieve better results with the H.264 encoded programming? Thanks.

That means you're grabbing the image from a non-keyframe so you only see 
the differences from some other frame.  This is due to a bad seek table.

For example, if you transcode and do not rebuild the seek table, you'd 
get this issue.

Or, if you transcode to MKV and do not clear the seek table (MKV should 
not have MythTV seek tables), you'd get this issue.

Mike