[FFmpeg-devel] [PATCH] ffmpeg_qsv: respect hwaccel_output_format setting

[Mark Thompson]

On 22/10/2020 02:52, Haihao Xiang wrote:
> Without this change, the output pixel format from qsv decoder is always
> 'qsv' ...

No it isn't.

> ffmpeg -loglevel verbose -hwaccel qsv -c:v h264_qsv
> -hwaccel_output_format yuv420p -i input.h264
> -pix_fmt rgb24 -f null -

The legacy decoders still use the -hwaccel option to indicate a desire for hardware-surface output, so don't set that.

(Updating them to use the hw_device_ctx API like everything else would be more useful than adding workarounds in the generic code.)

- Mark