In RPBroadcastSampleHandler not called `processSampleBuffer`

Question

Created Jan ’23

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I want to implement screen recording similar to Teams, WhatsApp... I created an Upload Broadcast Extension. If I start the extension, both audio and video will start to be recorded (without CallKit).

Issue:

During an ongoing call (CallKit), the extension starts, but does not start recording. Called broadcastStarted(withSetupInfo:) but not called processSampleBuffer(_:, with:). The extension stops after a short while.

How do I setup ReplayKit to work together with CallKit?
Is it possible that the CallKit audio setting does not allow ReplayKit recording?
Is it possible to turn off audio in ReplayKit and request only video?

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Answer 1

marek.labuzik OP

Mar ’23

I found out that RPBroadcastSampleHandler does not have a problem directly with CallKit. The problem is that I use AVSampleBufferDisplayLayer to display during a video call.

My problem is that if I use AVSampleBufferDisplayLayer.preventsCapture = true, the RPBroadcastSampleHandler extension does not start.

I expected from the preventsCapture setting that only that part of the image would not be recorded.

Is it possible to keep this setting while still allowing screen recording to work?

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