forked from unom/punktfunk
On-glass validated 2026-07-12 on an RTX 5070 Ti host with a real Steam Deck client (NV12 4:2:0, 1280x800@90): real nvEncInvalidateRefFrames landed 73/73 as clean P-frame recovery anchors (never IDR), losses consistently ~2 frames deep — well inside the 5-frame DPB. That is the loss recovery the libav hevc_nvenc path cannot express, so make the direct path the default on NVIDIA. PUNKTFUNK_NVENC_DIRECT=0 (also false/no/off) is now the libav escape hatch. Still gated on a CUDA capture payload — the `cuda` check in open_nvenc_probed keeps AMD/Intel on VAAPI regardless, and the NVENC/CUDA entry points stay dlopen'd at runtime (no new DT_NEEDED), so non-NVIDIA hosts are unaffected. Packaging comments updated to match. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>