WeTek Core (24p HD Netflix / HD Audio / Lollipop / OpenELEC / 4K / HEVC)
(2016-01-15, 14:05)wrxtasy Wrote:
(2016-01-15, 13:54)noggin Wrote:
(2016-01-15, 13:29)wrxtasy Wrote: Hmmm,
Noggin, can you try and go into OSD Video settings while DVD ISO is playing and disable de-interlacing completely and save as default ?

Are you getting ff-mpeg2 decoding of these DVD ?

Checked.

When playing a 576/50i DVD ISO I get dc:ff-mpeg2video.

When I disable deinterlacing on native interlaced content I get what looks like full intra-frame combing, but no motion judder (but obviously terrible picture quality) - though with some semblance of 50Hz motion (It's like a worse version of the old deinterlacing bug the Pi had on MMAL advanced). With deinterlacing in Auto, I get the motion judder I mentioned above sporadically. It doesn't appear to be regular.

When I watch native 25p content I don't get motion judder in either mode (and obviously no combing as there is no intra-frame motion on properly transferred 25p content) but with Auto deinterlacing enabled (or forced On) it appears to be far worse in lip-sync terms.
Ahh that explains it, I've been watching 576/25i content only with fast action and see no combing or judder with de-interlacing off.
I'm wondering how optimised ffmpeg is for ARMv7 or CortexA9.

Low bitrate 720p HEVC Software decoding seems to work Ok in brief testing I've done, so maybe it is optimised in ffmpeg 2.8.4

I really don't know enough about Software decoding in Kodi to tell you the truth.

What 576i25 (aka 576/50i) content are you watching? Concert, sports etc.? If it is drama or movie it will be 576p25 (so will have no intra-frame motion) and isn't natively interlaced.

Fast motion will massively show up combing - as there will be massive differences between the two fields in each 576i25 frame - so you will get really visible combing. You won't see it on static or very slow moving content (as there is little motion between the two fields in the interlaced frame). With in-phase (which is almost everything this side of the 70s) 25p content you won't see combing at all.

The Pi 2 can just about do a 576i25 MPEG2 CPU decode (it's what happens without the MPEG2 licence)

The Core looks to be decoding the MPEG2 fine - no obvious frame drops on 25p content. The deinterlace doesn't appear to be happening properly in hardware though. It may well be too much to deinterlace (a YADIF 2x etc.) in software as well. (The Chomebox could just about do the reverse - hardware MPEG2 decode with CPU deinterlace - before VAAPI MCDI/MADI were cracked by fritsch et al.)

Bottom line - AMLogic need to fix their MPEG2 decoder it seems.
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Messages In This Thread
RE: WeTek Core 4K - by wesk05 - 2015-09-15, 08:36
RE: WeTek Core 4K - by Skank - 2015-09-15, 09:59
RE: WeTek Core 4K - by droidelec - 2015-09-18, 18:11
RE: WeTek Core 4K - by movie78 - 2015-09-18, 18:18
RE: WeTek Core 4K - by wesk05 - 2015-09-18, 19:02
RE: WeTek Core 4K - by looun - 2015-09-18, 22:58
RE: WeTek Core 4K - by wesk05 - 2015-09-18, 23:39
RE: WeTek Core 4K - by BORIStheBLADE - 2015-09-19, 00:56
RE: WeTek Core 4K - by SilverBlade - 2015-09-19, 02:43
RE: WeTek Core 4K - by noggin - 2015-09-19, 11:13
RE: WeTek Core 4K - by wesk05 - 2015-09-19, 20:13
RE: WeTek Core 4K - by movie78 - 2015-09-19, 23:21
RE: WeTek Core 4K - by wrxtasy - 2015-10-05, 06:48
RE: WeTek Core 4K - by tomvs123 - 2015-10-09, 23:15
RE: WeTek Core 4K - by wrxtasy - 2015-10-10, 02:55
RE: WeTek Core 4K - by tomvs123 - 2015-10-10, 04:19
RE: WeTek Core 4K - by noggin - 2015-10-10, 10:15
RE: WeTek Core 4K - by wrxtasy - 2015-10-13, 11:27
RE: WeTek Core 4K - by couto27 - 2015-10-13, 12:40
RE: WeTek Core 4K - by wrxtasy - 2015-10-13, 14:33
WeTek Core 4K - by tredman - 2015-10-13, 13:57
RE: WeTek Core 4K - by hdmkv - 2015-10-13, 14:02
RE: WeTek Core 4K - by tomvs123 - 2015-10-13, 14:04
RE: WeTek Core 4K - by wrxtasy - 2015-10-13, 15:20
RE: WeTek Core 4K - by hdmkv - 2015-10-13, 15:54
RE: WeTek Core 4K - by wrxtasy - 2015-10-13, 17:00
RE: WeTek Core 4K - by gredawarha - 2015-10-13, 15:06
RE: WeTek Core 4K - by wrxtasy - 2015-10-13, 15:57
RE: WeTek Core 4K - by vineet381 - 2015-10-13, 15:23
RE: WeTek Core 4K - by tredman - 2015-10-13, 15:27
RE: WeTek Core 4K - by gredawarha - 2015-10-13, 15:29
RE: WeTek Core 4K - by vineet381 - 2015-10-13, 15:44
RE: WeTek Core 4K - by gredawarha - 2015-10-13, 16:53
RE: WeTek Core 4K - by Atinkler - 2015-10-13, 17:04
RE: WeTek Core 4K - by wrxtasy - 2015-10-13, 17:38
RE: WeTek Core 4K - by hdmkv - 2015-10-13, 17:06
RE: WeTek Core 4K - by zag - 2015-10-13, 17:06
RE: WeTek Core 4K - by hdmkv - 2015-10-13, 17:10
RE: WeTek Core 4K - by Atinkler - 2015-10-13, 17:43
RE: WeTek Core 4K - by wrxtasy - 2015-10-13, 17:56
RE: WeTek Core 4K - by Atinkler - 2015-10-13, 18:06
RE: WeTek Core 4K - by hdmkv - 2015-10-13, 17:44
RE: WeTek Core 4K - by droidelec - 2015-10-13, 17:50
RE: WeTek Core 4K - by wrxtasy - 2015-10-15, 05:56
RE: WeTek Core 4K - by mwake - 2015-11-25, 14:56
RE: WeTek Core (24p HD Netflix / Android Lollipop / OpenELEC / 4K HEVC) - by noggin - 2016-01-15, 14:09


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