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Re: [mediacapture-record] Does recording of remote a/v streams always imply re-encoding? (#139)

From: henbos via GitHub <sysbot+gh@w3.org>
Date: Fri, 13 Sep 2019 14:19:38 +0000
To: public-webrtc-logs@w3.org
Message-ID: <issue_comment.created-531255477-1568384376-sysbot+gh@w3.org>
My take: MediaRecorder specifies the codec with MediaRecorderOptions.mimeType. The input to the recorder is the frames of the MediaStreamTrack, the recorder is essentially a sink, responsible for encoding. The recorder should ideally not know or care (wrong abstraction layer) if the track originates from a camera, webrtc or something else.

That said - if an implementation want to take advantage of the fact that the recorder is of the same format as a WebRTC stream then it would be free to implement such optimization. But that would be a browser optimization feature, not a spec mandate.

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