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A comment on The First Media over QUIC CDN: Cloudflare. Parent comment

Re:The First Media over QUIC CDN: Cloudflare by kixelated on Saturday August 23, 2025 @12:29AM (#44993164)
It's all hardware accelerated, assuming the VideoDecoder has hardware support for the codec. VideoFrame is available in WebGL and WebGPU as a texture or gpu-buffer. We're only rendering after a`requestAnimationFrame` callback so decoded frames may get automatically skipped based on the display frame rate.

I don't think the performance would be any worse than the <video> tag. The only exception would be browser bugs. It definitely sounds like the black bars are a browser rendering bug given it's fine when recorded.

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Re:The First Media over QUIC CDN: Cloudflare by DaleCurtis on Saturday August 23, 2025 @02:50AM (#44993857)
Unfortunately canvas (rgb'ish) can't overlay as efficiently as <video> (yuv'ish), so there is some power cost relative to the lowest power video overlays.

It really only matters in long form content where nothing else on the page is changing though.

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Re:The First Media over QUIC CDN: Cloudflare by chrismorgan on Saturday August 23, 2025 @01:08PM (#44997384)
> It really only matters in long form content where nothing else on the page is changing though.

Did you not just describe at least 99% of all web video?

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Re:The First Media over QUIC CDN: Cloudflare by DaleCurtis on Saturday August 23, 2025 @01:54PM (#44997778)
If only that were true, battery usage would be much better :) Just consider the prominence of content like tiktoks/shorts/reels/etc alone.
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