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conformance · v145

v145 · expose-rtptimestamp-from-webrtc-video-frames-via-videoframe-metadata — conformance probe

5 assertions drawn from the spec. Each is a single contract the spec text makes. Pass/fail reflects what this browser executed; blocked means the contract was not run because it needs user mediation, hardware, or another unavailable precondition. Open the page in Chrome stable / canary / Firefox / Safari to compare.

browser: spec: https://www.w3.org/TR/webcodecs-video-frame-metadata-registry/#dom-videoframemetadata chromestatus: #5186046555586560 generated 2026-06-01T08:14:32Z by conformance-author-v1-subagent
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id contract kind verdict detail
video-frame-exists VideoFrame is exposed — the WebCodecs interface the new metadata() lives on. exists
video-frame-metadata-is-function VideoFrame.prototype.metadata is a function — the call returns a dictionary that may carry rtpTimestamp. spec ↗ typeof
video-frame-metadata-returns-object VideoFrame.prototype.metadata() returns an object even for a frame with no native metadata — an empty dictionary in that case. spec ↗ script
media-stream-track-processor-exists MediaStreamTrackProcessor is exposed — the bridge from WebRTC tracks to VideoFrames, the source of rtpTimestamp-carrying frames. exists
rtc-peer-connection-exists RTCPeerConnection is exposed — the WebRTC entry point whose received frames carry rtpTimestamp. exists