[MEncoder-users] Is it possible to do IVTC on video from the HD-PVR?

[Andrew Berg]

On 6/1/2010 11:41 PM, Laine Lee wrote:
> You should be able to play the output of the HD-PVR in recent versions of
> MPlayer. You can see telecining yourself by viewing frame by frame with the
> "." key. I have to use "-demuxer lavf" and give playback just a moment to
> stabilize before pausing and advancing a frame at a time with ".". If in
> roughly every 12 frames you see 6 pairs of duplicates, 2 consecutive pairs
> of which look like a double-exposed photo with combing, you've got a 60 fps
> telecined, interlaced source.
It turns out some portions of the video (entire segments between ad
breaks) have a different pattern, resulting in jitters during that part
of the encoded video (the original capture does not appear different in
these segments during normal playback). This pattern is five pairs of
duplicate frames with 3 progressive and 2 interlaced rather than 6 pairs
with 4 progressive and 2 interlaced. I don't think there's anything I
can do about it, but do you have any idea why the pattern would be
different in different parts of the same broadcast?