On further searching, it seems that manjaro has opted to use mesa with avc, hevc etc disabled due to some patent reasons.
How do I get back support for hardware avc decoding?
I would prefer not installing mesa packages from AUR or compiling it myself.
Thanks. I wanted to avoid both these choices since they make a system too prone to crashes (and I don’t trust myself with maintaining packages or want to take the headache to track updates). I think I will wait for a few days to see how this develops further, and switch to arch if it remains the same. Not having hardware decode on laptop is a deal breaker for me