I don't work for Zoom, so this will be my best guess.
WebRTC supports VP8 and h264, but it really depends on the platform. h264 is not free and may not be available. The screen capture API will give them a video stream which they need to decode and the encode again in their own format. This is where some of the efficiencies will come.
It is also more likely that h264 to be hardware optimized than vp8.
WebRTC supports VP8 and h264, but it really depends on the platform. h264 is not free and may not be available. The screen capture API will give them a video stream which they need to decode and the encode again in their own format. This is where some of the efficiencies will come.
It is also more likely that h264 to be hardware optimized than vp8.
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