Change #265138

Comments

avcodec/cuviddec: fix monochrome formats misclassified as YUV444
Monochrome formats (gray, gray10le) have log2_chroma_w == 0 and
log2_chroma_h == 0 because they have no chroma planes — the same
values as YUV444. This caused them to be misclassified as YUV444 by
the is_yuv444 detection introduced in bcea693f75.

After fed6612415 changed cuvid_test_capabilities to use is_yuv444
instead of hardcoding cudaVideoChromaFormat_420, monochrome AV1
streams were rejected with "Codec av1_cuvid is not supported with
this chroma format".

Add an nb_components > 1 guard to exclude single-component formats
from the YUV444 path.

Patch by: Aniket Dhok <adhok@nvidia.com>
Signed-off-by: Diego de Souza <ddesouza@nvidia.com>

Changed files

• libavcodec/cuviddec.c