I find "4K" depends on the stream bitrate which normally correlates to the refresh rate. Most 4K@25/30 media in VP9/AV1 plays fine as the CPU has enough grunt to handle software decoding. If the stream is 4K@25/30 with a high bitrate (rare, as YouTube processes all uploaded media so you get a level of bitrate conformity) or if the refresh rate is 4K@50/59.94/60 the stream normally stutters like hell as the CPU simply doesn't have enough grunt to keep up.
Thx for your answere!
The Youtube streams are as follows:
2160p (4k) (vp9, 3840x2160, 14868968 bps)
1140p (QHD) (vp9, 2560x1440, 4470482 bps)
1080p (FHD) (h264, 1920x1080, 2288879 bps)
Only the h264 Full HD stream works reliably.
Is it not possible to stream QHD or 4k 30 fps reliably on the Pi5?
Can you classify the bit rates for me? Should the Pi be able to handle this, or is the bit rate too high?