I am using captureStream with a frame rate of 0 to capture frames from a webgl canvas. How to trick requestFrame into thinking the canvas has changed?

Asked Jul 21 '23 at 03:47

Active Jul 21 '23 at 03:47

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My understanding is requestFrame will not add frames to the stream unless it believes the canvas has changed. I want to have some periods in my video where the same frame appears multiple times in a row. How can I trick requestFrame into believing the canvas has changed?

asked Jul 21 '23 at 03:47

Keith Carter

Maybe the best would be to use a 2D context as a mirror and capture the stream from its canvas, from there you could easily draw a transparent pixel and that'd do the trick. For webGL I guess you'd have to at least preserve the drawing buffer, then I'm not sure how trivial that would be to draw again (or over) the existing content. – Kaiido Jul 21 '23 at 04:56

I am using captureStream with a frame rate of 0 to capture frames from a webgl canvas. How to trick requestFrame into thinking the canvas has changed?

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