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Windows: NVENC H.265 Main 10 HDR (PQ / HLG) export

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HDR sequences export as real 10-bit HEVC Main 10 through NVENC where the GPU
reports 10-bit HEVC: float BT.2020 R'G'B' -> rgbf_to_yuv420_10 -> P010 input;
VUI BT.2020 + PQ/HLG; HDR10 mastering-display / content-light as SEI on every
IDR (PQ); colr/mdcv/clli in the sample entry. New register_hdr_probe /
hdr_available in the export crate; macOS and GPUs without 10-bit keep
tone-mapping HDR sequences to 8-bit SDR HEVC. ABI asserts extended and
re-verified against nvEncodeAPI.h 12.1 (0 drift). 8-bit SDR HEVC unchanged;
the two #328 tests that asserted HDR is declined now expect Main 10.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Davi Andrei
2026-10-08 23:38:14 -03:00
co-authored by Claude Sonnet 5.5
parent a8f91e3ffe
commit dbae11b843
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README.md
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@@ -287,9 +287,9 @@ We track two numbers ([ROADMAP.md](ROADMAP.md#honest-assessment-2026-10-05)):
The biggest gaps today:
- **Speed on big footage.** Hardware decoding works on macOS and Windows; Linux has no hardware path yet. Blend modes and the most common effects run on the GPU, but Lumetri, keys and export rendering still run on the CPU; H.264 encoding can use the hardware encoder on macOS and on Windows with an NVIDIA GPU (opt-in, Export ▸ Hardware encoding), and H.265 export is hardware-only on both (NVENC; Main 10 and HDR not yet) ([#30](https://github.com/storytold/filmcraft/issues/30)).
- **Speed on big footage.** Hardware decoding works on macOS and Windows; Linux has no hardware path yet. Blend modes and the most common effects run on the GPU, but Lumetri, keys and export rendering still run on the CPU; H.264 encoding can use the hardware encoder on macOS and on Windows with an NVIDIA GPU (opt-in, Export ▸ Hardware encoding), and H.265 export is hardware-only on both (HDR sequences export Main 10 PQ / HLG with NVENC; VideoToolbox writes 8-bit SDR) ([#30](https://github.com/storytold/filmcraft/issues/30)).
- **No plugins.** No VST3 / Audio Units or OpenFX hosting.
- **Delivery codecs.** H.264 is our only software delivery-codec export; H.265 (8-bit Main, SDR) exports only through a hardware encoder (NVIDIA on Windows, VideoToolbox on macOS); no AV1 export yet.
- **Delivery codecs.** H.264 is our only software delivery-codec export; H.265 exports only through a hardware encoder (NVIDIA on Windows: Main 8-bit SDR and Main 10 HDR PQ / HLG; VideoToolbox on macOS: 8-bit Main, SDR); no AV1 export yet.
- **Real-world media and platforms.** Our decoders are bit-exact on conformance streams, but camera and phone files in the wild are less tested. Windows and Linux get far less testing than macOS.
- **AI features.** Few so far; speech to text is optional and off by default.