I noticed that playing VC-1 endoced files leads to alot of dropped frames. In the first two minutes of the Blu Ray rip of The Boure Identity it says 86 dropped frames in the ctrl+shift+o overlay.
The problem seems to be that the PI 4 does not have hardware acceleration for VC-1, unlike the Pi 3, and that the CPU is not quite powerfull enough to decode it via software. What make me belive that is
There are alot of dropped frames when playing h.264 when hw-decoding is deactivated, but no dropped
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maeries
February 4, 2021 at 8:13 PM
Overclocking the Pi 4 solved all stuttering issues in my case.
Just wanted to mention here additionally, it may help others.