[mythtv] Advice on adding feature to mythtranscode

[Paul Gardiner]

On 10/08/2011 13:52, Paul Gardiner wrote:
> Hi,
> I'm trying to add an option to mythttranscode where cutting
> is achieved by decoding all video/audio and throwing away
> the cut sections, rather than seeking. My patch is simple
> and looks to work other than all the cuts are late by about
> 1 second, both late starting and stopping (as though mythplayer
> is not returning the first 25 frames or so). Likelihood is that
> I've screwed up somewhere, but I just thought it worth asking here
> because it might be obvious to someone with deep knowledge of
> mythplayer why that might happen.
>
> I can post the patch if that helps, and explain the purpose of
> the feature, but I thought I'd keep the initial post as small
> as possible.

More specifically, the problem is why
videoOutput->GetLastDecodedFrame()->buf might contain the
decoded data for a frame that is about 25 frames past that
corresponding to videoOutput->GetLastDecodedFrame()->frameNumber.