2015-02-17, 16:11
Just been playing with my Pi2 (which has MPEG2 and VC-1 licences) and TV Headend.
Watching the Freeview SD MPEG2 576/50i broadcasts (that are natively 50i) deinterlaced scaled to 1080/50p, the ticker de-interlaces oddly with MMAL Advanced. It combs partially, with jittering dots/lines (in the 576i domain) on the edges of motion. really obvious on the BBC News channel ticker at the bottom of screen. De-interlacing is taking place, and you do get 50Hz (not 25Hz) motion, but it isn't clean. It almost looks like a de-interlacing fault.
Switching to MMAL Bob you get clean 50Hz motion with none of the odd artefacts but it is noticably softer.
It could be that MMAL Advanced just doesn't quite cut it but I thought it was better than this. Elsewhere people have suggested it is as good as YADIF 2x, and delivered good results for SD content.
(I'm not using the Half rate options, and am watching 50Hz at 50Hz so no motion judder due to mismatched frame rates.)
I've also noticed that OMXPlayer does a MUCH better job than just having MMAL enabled in Playback Acceleration with TV Headend streams?
I'm running OE 5.0.3 (OE release) - anyone got any thoughts?
Watching the Freeview SD MPEG2 576/50i broadcasts (that are natively 50i) deinterlaced scaled to 1080/50p, the ticker de-interlaces oddly with MMAL Advanced. It combs partially, with jittering dots/lines (in the 576i domain) on the edges of motion. really obvious on the BBC News channel ticker at the bottom of screen. De-interlacing is taking place, and you do get 50Hz (not 25Hz) motion, but it isn't clean. It almost looks like a de-interlacing fault.
Switching to MMAL Bob you get clean 50Hz motion with none of the odd artefacts but it is noticably softer.
It could be that MMAL Advanced just doesn't quite cut it but I thought it was better than this. Elsewhere people have suggested it is as good as YADIF 2x, and delivered good results for SD content.
(I'm not using the Half rate options, and am watching 50Hz at 50Hz so no motion judder due to mismatched frame rates.)
I've also noticed that OMXPlayer does a MUCH better job than just having MMAL enabled in Playback Acceleration with TV Headend streams?
I'm running OE 5.0.3 (OE release) - anyone got any thoughts?