AVAsynchronousVideoCompositionRequest sourceFramebytrackID returns nil sometimes while seeking

Media Technologies Audio
testinstadev OP
Created Sep ’21
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I want to know under what conditions does -[AVAsynchronousVideoCompositionRequest sourceFramebytrackID] returns nil. I have a custom compositor and when seeking AVPlayer, I find the method sometimes returns nil, particularly when seek tolerance is set to zero. No issues are seen if I simply play the composition. Only seeking throws these errors and only some of the times.

Replies  1
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Views  528
Participants  1
testinstadev OP
Sep ’21

Dear Apple Engineers,

Can you please shed more light on this on why sourceFrame(byTrackId:) sometimes returns nil while seeking with AVPlayer seekTolerance set to .zero? Is it a bug? I have built my project using XCode 13 beta 5 but running it on iOS 14 device.

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AVAsynchronousVideoCompositionRequest sourceFramebytrackID returns nil sometimes while seeking
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