Playing UHD H264

[dividuum]

How exactly does that work? Can we the existing OpenMAX API? I tried omxplayer with jellyfish-120-mbps-4k-uhd-h264.mkv from http://jell.yfish.us/ without success:

Code: Select all

root@raspberrypi:~# ffprobe jellyfish-120-mbps-4k-uhd-h264.mkv 
ffprobe version 4.1.3-1+rpt1 Copyright (c) 2007-2019 the FFmpeg developers
[...snip...]
Input #0, matroska,webm, from 'jellyfish-120-mbps-4k-uhd-h264.mkv':
  [...snip...]
  Duration: 00:00:30.03, start: 0.000000, bitrate: 120490 kb/s
    Stream #0:0(eng): Video: h264 (High), yuv420p(tv, bt709, progressive), 3840x2160 [SAR 1:1 DAR 16:9], 29.97 fps, 29.97 tbr, 1k tbn, 59.94 tbc (default)
root@raspberrypi:~# omxplayer jellyfish-120-mbps-4k-uhd-h264.mkv 
have a nice day ;)
root@raspberrypi:~# 

[gkreidl]

Edited: The H264 decoder only supports 1920x1080.

[dividuum]

Edited: The H264 decoder only supports 1920x1080.

Oh. Didn't know that. Thanks. So HVEC is required for that? How does one decode that? I naively modified my existing code to send HVEC video frames to the `video_decode` component and never got a OMX_EventPortSettingsChanged event. Is OMX still supported or is mmal or some other method the recommended way to decode video now?

[6by9]

https://www.raspberrypi.org/forums/view ... 3&t=243414
https://github.com/raspberrypi/firmware/issues/1168

FFmpeg is probably the safest bet for now, using V4L2 for decode.
HEVC will be using most likely be using the V4L2 stateless API (current ones are using the stateful API), but FFmpeg should use whichever one is required.