forked from unom/punktfunk
FFmpeg names non-constant-luminance BT.2020 as bt2020nc. The current bt2020 value is rejected by scale_vaapi with Invalid colour_matrix, preventing the HDR VAAPI graph from opening. Match the existing AVCOL_SPC_BT2020_NCL VUI and update the focused test. Co-Authored-By: OpenAI Codex <noreply@openai.com>