[FFmpeg-devel] [PATCH 10 bit support v5 1/3] avcodec/amfenc: Fixes the color information in the output.

[Evgeny Pavlov]

On Mon, Dec 11, 2023 at 10:21 PM Mark Thompson <sw at jkqxz.net> wrote:

>
> Not the same, but here is a freely-available test video which has the same
> effect: <https://4kmedia.org/lg-new-york-hdr-uhd-4k-demo/>.  Output below.
>
> It doesn't seem like this should be dependent on the underlying hardware
> since (I hope) it won't go to the hardware for header information.  Still,
> just in case: it's a 5850U APU running driver version 23.11.1 on Windows 10.
>
> (Seems like it might be a good idea for the debug output to print the
> driver and hardware versions at least?)
>
> The VPS out-of-order is also a weird effect - it makes it look like the
> two headers are generated by separate processes, which doesn't seem like a
> good idea when you want them to be identical.
>

I've  tested the video on 5700U APU with 23.11.1 on Windows 11 & confirmed
that there is an issue with missing color information in the header. It
seems that for 5xxxU APU drivers 23.11.1 doesn't contain a fix for this bug
in AMF.
I've checked with the latest AMF library on  5700 U APU and the issue was
fixed, so I believe future driver releases will include the updated version
of AMF library.
This issue with missing color information isn't related with ffmpeg code
itself, we need to wait for updated AMD drivers for APU