Re: [webrtc-encoded-transform] Add presentationTimestamp to RTCEncodedVideoFrameMetadata (#173)

Thanks, microseconds makes sense now. However, I remain concerned about the name.

Consistency with [VideoFrame](https://w3c.github.io/webcodecs/#dom-videoframe-timestamp) and [EncodedVideoChunk](https://w3c.github.io/webcodecs/#dom-encodedvideochunkinit-timestamp) would mean calling it _"`timestamp` ... The presentation timestamp, given in microseconds. The timestamp is copied from the [EncodedVideoChunk](https://w3c.github.io/webcodecs/#encodedvideochunk) corresponding to this VideoFrame."_

However, in [RTCEncodedVideoFrame](https://w3c.github.io/webrtc-encoded-transform/#rtcencodedvideoframe) `timestamp` is taken (used for RTP). But there's a comment claiming this _"will eventually re-use or extend the equivalent defined in WebCodecs"_ (presumably [EncodedVideoChunk](https://w3c.github.io/webcodecs/#encodedvideochunk))?

<img width="839" alt="image" src="https://user-images.githubusercontent.com/3136226/231479567-a0ae6e26-1ba1-4d40-80d0-b8166dec08fe.png">

If that is still our intent, we would appear to be at a crossroads. Is it too late to align this?

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Received on Wednesday, 12 April 2023 14:14:56 UTC