2019-10-30, 10:31
(2019-10-30, 01:47)madmax2 Wrote: anyone know if the pi4 can play 4k hevc and also HDR yet?
The Pi 4B can play 4K HEVC 8-bit and 10-bit content (but there are still some caveats as some content shows stuttering - but not all. This could be bitrate or toolset related - I'm not sure). It cannot play 4K h.264 stuff.
Whilst the 4B can replay 4K HEVC 10-bit HDR content - it can't output it in a particularly useful format - and can't output HDR over HDMI yet. So you can play it, but you wouldn't want to watch it.
ALSO - it appears the Pi 4B may never be able to output 4:2:0 mode video (the vertical chroma subsampling is a stumbling block) - so for 2160p50/p60 HDR output you will need a 12-bit 4:2:2 compatible display (sometimes described as 'Enhanced HDMI' by some manufacturers) Quite a number of displays (and some AVRs) don't support 4:2:2 2160p50/p60 12-bit. (There is no 10-bit variant of this HDMI output standard)
Quote:and which ram config of pi4 is recommended?
AIUI 2GB is fine for 4K HEVC playback (there have been suggestions that 1GB may be a little bit marginal, and 4GB is overkill)
