RAspberry pi: Update Playback Profiles

[Peter Bennett <pgbennett@…>]

Recently I have found that there is some pixelation when viewing certain channels using openmax. When viewing then using ffmpeg, that problem disappears. Either there are errors in the stream which are handled better by ffmpeg, or some mpeg2 feature is being used that is not supported by openmax.

The raspberry pi 2 is able to sustain a 1080i stream using ffmpeg decoder and openmax renderer.

I have updated the OpenMAX Normal profile to add an entry where ffmpeg is used for Standard Definition. I have also added "OpenMAX High Quality" which does ffmpeg and openmax for all resolutions.

On raspberry pi 2, OpenMAX high Quality is fine, but has minor glitches with the OSD. I suspect it may work better on a raspberry pi 3.

[Peter Bennett <pgbennett@…>]

Patch to update playback profiles

[Peter Bennett <pgbennett@…>]

This maybe needs a re-think - when selecting the "OpenMAX high Quality", MPEG2 plays fine, but x264 is very bad.

I found that you can simply disable the MPEG2 license key and select the openmax decoder - this falls back to ffmpeg for mpeg2 but still uses openmax for x264. That way I get high quality for both, but it is a kludgy solution.

[stuartm]

Hi Peter, as you've said, this will actually degrade performance for those countries which use H.264 instead of, or in combination with MPEG-2.

[Peter Bennett <pgbennett@…>]

I think we should cancel this for now.

[Karl Egly]

Replying to Peter Bennett <pgbennett@…>:

I think we should cancel this for now.

done