Nvenc windows#1

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sionzee wants to merge 18 commits intomainfrom

Commits on Apr 4, 2026

feat(webrtc-sys): enable NVENC hardware encoding on Windows
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fix(nvidia): patch winsock header conflicts for Windows compilation
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Commits on Apr 5, 2026

WIP: NVENC Windows support — blocked by winsock.h/winsock2.h conflict
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fix(webrtc-sys): NVENC Windows compilation with vcvarsall environment
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feat(webrtc-sys): auto-detect Visual Studio environment for NVENC
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feat: auto-detect vcvarsall + remove software caps
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ci: auto-sync with upstream livekit/rust-sdks weekly
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fix: link cuda.lib for NVENC symbols on Windows
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fix: encoder-only NVENC — skip decoder (nvcuvid.lib not available)
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fix: restore full NVENC encoder+decoder with bundled nvcuvid.lib
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feat(nvenc): H265 Main 10 profile with HDR VUI metadata
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fix(nvenc): correct VUI enum types and remove invalid inputBitDepthMinus8 field
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fix(nvenc): apply rate adaptation via Reconfigure in SetRates
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revert: remove Reconfigure in SetRates — bandwidth estimator over-throttles
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fix(nvenc): bitrate floor + Reconfigure + SDP start-bitrate for all codecs
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fix(nvenc): cooperate with BWE instead of fighting it
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fix(nvenc): remove maxQP cap — let encoder freely match BWE rate
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feat: wire min_bitrate_bps through RtpEncodingParameters
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