Way to use AVAssetWriter to output video files with a constant FPS (CFR) or variable bitrate (VBR).

I want to use AVAssetWriter to output video files with a constant FPS (CFR) or variable bitrate (VBR).

As far as I could search, I couldn't find out. How do I implement the settings?

Way to use AVAssetWriter to output video files with a constant FPS (CFR) or variable bitrate (VBR).
 
 
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