[hugoalves-dev]

Summary

• Add opt-in hardware AV1 probing and Media Foundation codecs while retaining H.264 fallback.
• Negotiate a shared codec from publisher/viewer capabilities and required AV1 profile/level.
• Add AV1 SDP/RTP handling, including sequence continuity checks across temporal units; gaps drop the affected unit and trigger the existing recovery keyframe request.
• Cap advertised AV1 level to the 640x360@30 configuration actually exercised by the capability probe.
• Keep audio flowing and video queues gated on a fresh keyframe through same-peer H.264 fallback, including runtime AV1 encoder failures.
• Surface codec decisions/fallback reasons and add a reproducible opt-in encoder benchmark.

Validation

• RTC Release test project: 144 passed.
• Windows media Release test project: 153 passed, 2 skipped.
• AV1 RTP assembler tests: 15/15; AV1 capability probe tests: 6/6.
• The Windows CI failures from the prior run were traced to RTC fakes missing same-connection H.264 offer support and an overstrict capture-burst send-count assertion. Both are corrected.

The benchmark compares AV1 and H.264 at 640x360 and 30 fps. It is synthetic and encoder-only; decoder performance, capture cadence, RTP/network behavior, end-to-end latency, dropped frames, and visual quality are unavailable and are not inferred.

[chatgpt-codex-connector]

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[hugoalves-dev]

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[chatgpt-codex-connector]

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