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Re: H.265 on tvOS 11.0

Posted: 12 Dec 2017, 16:13
by gamecaptor
Updated to the latest build and the problem still exists.

Changed the buffer settings to your recommendations and the problem still exists.

Side note I had a friend test the same file on a Fire TV and there was no playback issue (NOTE: It was Kodi, not MrMC).

My gut still says it's something with the processor on the 4th Gen; it simply can't handle it. The 4K has no playback issues.

Re: H.265 on tvOS 11.0

Posted: 12 Dec 2017, 16:38
by davilla
Could be, the hw decoder is different between AppleTV 4 and 4K. It's tied to the SoC so A8 vs A10X.

Re: H.265 on tvOS 11.0

Posted: 12 Dec 2017, 20:39
by gamecaptor
Had another friend test the same file on a MiBox and it played back without an issue.

Re: H.265 on tvOS 11.0

Posted: 12 Dec 2017, 23:15
by cosmoxl
gamecaptor wrote:
12 Dec 2017, 20:39
Had another friend test the same file on a MiBox and it played back without an issue.
what is the bitrate of the HEVC files you're trying to play on the ATV4? near 20mbit/s it seems to stutter in my experience.

if bitrate is low, perhaps it is due to some of the more expert settings in HEVC encoding and the software decoding (of the ATV4) struggles with fringe encoding settings regardless of bitrate. Just a thought.

Re: H.265 on tvOS 11.0

Posted: 13 Dec 2017, 01:39
by gamecaptor
General
Unique ID : 328454411618700369766819741633982300029 (0xF71A04C792E4DCB06DC99A8E12F4FF7D)
Complete name : W:\Pixar\Shorts\Lou (2017) [BR-H265-DTS].mkv
Format : Matroska
Format version : Version 4 / Version 2
File size : 469 MiB
Duration : 6 min 43 s
Overall bit rate : 9 735 kb/s
Encoded date : UTC 2017-12-07T18:57:19Z
Writing application : HandBrake 20171204185501-d58a91d-master 2017120501
Writing library : Lavf57.7.2

Video
ID : 1
Format : HEVC
Format/Info : High Efficiency Video Coding
Format profile : Main@L4@High
Codec ID : V_MPEGH/ISO/HEVC
Duration : 6 min 43 s
Bit rate : 8 032 kb/s
Width : 1 920 pixels
Height : 1 072 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Bits/(Pixel*Frame) : 0.163
Stream size : 387 MiB (83%)
Default : Yes
Forced : No

Audio
ID : 2
Format : DTS
Format/Info : Digital Theater Systems
Mode : 16
Format settings, Endianness : Big
Codec ID : A_DTS
Duration : 6 min 43 s
Bit rate mode : Constant
Bit rate : 1 509 kb/s
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 kHz
Frame rate : 93.750 FPS (512 SPF)
Bit depth : 24 bits
Compression mode : Lossy
Stream size : 72.7 MiB (16%)
Title : Surround
Language : English
Default : Yes
Forced : No

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Re: H.265 on tvOS 11.0

Posted: 27 Feb 2019, 11:45
by ruchika
Truly relies upon the bitrate and quality of the document being referred to. You can keep a similar size yet improve quality, or go littler size for similar quality. Apple said it'll be about a large portion of the size for a similar quality I think.