H.264 stopped working after upgrading Raspberry Pi OS

H.264 stopped working after upgrading Raspberry Pi OS - Printable Version

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H.264 stopped working after upgrading Raspberry Pi OS - lvella - 2024-10-25

I am still able to hardware decode and play H.265, but H.264 videos shows no video.

It happened after doing normal Debian based upgrade of:

bash:


sudo apt update

sudo apt upgrade

The log with debug enabled is here:
https://paste.kodi.tv/okejisomed.kodi

In this session I tried playing a H.264 video twice, and a H.265 video once.

Do you know why I can no longer reproduce H.264?

RE: H.264 stopped working after upgrading Raspberry Pi OS - lvella - 2024-10-25

Ok, just after posting, I read the logs and after a brief googling, I found that this dmaheap device is

Code:
/dev/dma_heap/linux,cma

. This device was owned by and only readable/writable by root. I changed its group to the group I run kodi under, and gave rw permission to the group, and H.264 is working again.

Probably will have to change some udev rule for this fix to stick.

But I wonder why H.264 and H.265 hardware decoding interfaces are so different...