[mythtv-users] Pixelation with VDPAU and one channel

[Peter Bennett]

Since December 2016 there has been a new broadcast channel in Boston for 
NBC. It is using MPEG2 1080i.

When watching a recording from this channel with VDPAU decoding, every 
15 seconds or so there is pixelation on 20% to 50% of the screen. I have 
tried this on 4 machines all equipped with NVIDIA Geforce 210 and they 
all show the problem. All other (MPEG2 and H264) channels are perfect.

If I change playback profile to Standard decoding (ffmpeg), the playback 
of the same recording is perfect. On Raspberry Pi with OpenMAX (with 
mpeg2 license), the same recording is perfect. If I transcode to H264, 
then I can watch using VDPAU decoding and it is perfect.

If I watch the recording files with VLC, with VDPAU selected, I see the 
same pixelation.

If I watch the same file again the pixelation is at the same places, 
with MythTV and VLC.

This has happened continuously since that channel came on the air and 
still happens.

Has anybody else seen this? Anybody have any ideas?

Peter