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Engineering

AVAssetWriter crash creating CMAF compliant segments

Using AVAssetWriter to create CMAF compliant segments in realtime is unstable on Intel macs when the frame rate is dynamic. You either need to switch away from CMAF, disable expectsMediaDataInRealTime or ensure a stable frame rate.

Mathijs Kadijk

May 262 min read

Engineering

Mentioning SCStreamError crashes on older macOS versions

A public service annoucement for those using ScreenCaptureKit in an app that also needs to run on macOS < 12.3 (Monterey).

Tom Lokhorst

March 131 min read

Engineering

Recording to disk using ScreenCaptureKit

Saving a screen capture to disk has some interesting edge cases when using ScreenCaptureKit. The documentation and WWDC videos don't really cover using the captured frame samples. We created an example.

Tom Lokhorst

January 317 min read