Real world compare? Shield 2019 vs ODROID-N2
#31
(2020-06-23, 16:49)hdmkv Wrote: Very helpful, thanks. I have an older i5 desktop, so x265 encoding takes many hours. Using Intel's Quick Sync h.264 instead with Handbrake, which is pretty fast. But, had left all settings at default; will try the deinterlacing suggestions (looks like 'Decomb' is the preferred option).

Deinterlacing very much depends whether the sources are 25Hz (drama and high end docs) or 50Hz motion (sport, entertainment and news).
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#32
So, after re-encoding (kept original framerate, used Decomb deinterlacing), it plays shaky on ODROID-N2 w/CE & Vero 4K+ (AMLogic limitation?), perfectly (surprisingly) on FTV Stick 4K, and also perfectly on Shield TV. Here's the mediainfo:
Code:
General
Unique ID : 329929591264563076028125856637205967421 (0xF83620C062F755787ECFAC6252B9723D)
Complete name : Y:\Concerts\concert.mkv
Format : Matroska
Format version : Version 4
File size : 18.6 GiB
Duration : 2 h 10 min
Overall bit rate : 20.4 Mb/s
Movie name : XXX_band at Glastonbury (2017)
Encoded date : UTC 2020-06-23 20:28:42
Writing application : mkvmerge v46.0.0 ('No Deeper Escape') 64-bit
Writing library : libebml v1.3.10 + libmatroska v1.5.2

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : [email protected]
Format settings : CABAC / 1 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference frames : 1 frame
Format settings, GOP : M=3, N=50
Codec ID : V_MPEG4/ISO/AVC
Duration : 2 h 10 min
Bit rate : 20.0 Mb/s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 50.000 FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.193
Stream size : 18.3 GiB (98%)
Language : English
Default : Yes
Forced : No
Color range : Limited
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709

Audio
ID : 2
Format : MPEG Audio
Format version : Version 1
Format profile : Layer 2
Codec ID : A_MPEG/L2
Codec ID/Hint : MP2
Duration : 2 h 10 min
Bit rate mode : Constant
Bit rate : 384 kb/s
Channel(s) : 2 channels
Sampling rate : 48.0 kHz
Frame rate : 41.667 FPS (1152 SPF)
Compression mode : Lossy
Delay relative to video : 134 ms
Stream size : 360 MiB (2%)
Language : English
Default : Yes
Forced : No

One last one Wink so we don't turn this into an encoding thread, although that's relevant to h/w and we can play using Kodi. Here's another concert clip, 2160p 4:2:2 HEVC 50Hz; thoughts on playback? Tested via FTV Stick 4K (green screen w/audio), 2017 Shield TV (spinning wheel, won't play), and ODROID-N2 w/CE (audio only).
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#33
Your 2160p 4:2:2 HEVC 50Hz sample does not play on Kodi 18.7 / Shield 2019 Pro either.
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#34
Thanks, knew it wouldn't. Wondering how best to re-encode Smile.
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#35
(2020-06-24, 00:21)hdmkv Wrote: Thanks, knew it wouldn't. Wondering how best to re-encode Smile.

4:2:2 is the issue - though the Raspberry Pi 4B may cope with it (unusually the Pi 4B has a 4:4:4 capable HEVC decode engine I believe - so should support 4:2:2). Everything else will need a transcode to a 4:2:0 format.  If you have an Intel machine that's relatively recent knocking around then Quicksync HEVC encoding is pretty fast in ffmpeg.  I re-encoded some very high bitrate (440Mbs or higher) HLG ProRes 2160p25 4:2:2 stuff to a format that played fine on consumer 4:2:0 gear.  I usually run at a constant quality - and run 4:2:0 HEVC 10-bit as my output - even for SDR content if the source files are 10-bit.

However I'd give the 1080i stuff you have re-encoded with decomb a decode with -filter v "w3fdif=complex:all" as you may see that deliver nice full 50Hz motion with few motion artefacts. (It's a clever BBC-designed V/T - vertical/temporal filter that isn't adaptive and doesn't try to track or detect motion.  It was the standard deinterlacer used in lots of broadcast hardware for many years)  Personally I prefer Weston 3-field to YADIF 2x on most content - though fast 80s electronic rolling credits can sometimes defeat it.
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