AVAssetExportSession in ios 10 not working for iPhone 7

Question

When I am blending two videos with AVAssetExportSession in ios 9 its working perfectly. but when i blend with AVAssetExportSession in iOS 10, it in not working. Please help

Answer 1

It's a bug.

It's fixed in Xcode 8.1 beta.

Xcode 8.1 beta [AVAssetExportSession allExportPresets] iPhone 7 Simulator now returns

AVAssetExportPreset1920x1080,
AVAssetExportPresetLowQuality,
AVAssetExportPresetAppleM4A,
AVAssetExportPreset640x480,
AVAssetExportPreset3840x2160,
AVAssetExportPresetHighestQuality,
AVAssetExportPreset1280x720,
AVAssetExportPresetMediumQuality,
AVAssetExportPreset960x540

Xcode 8.0 [AVAssetExportSession allExportPresets] iPhone 7 Simulator returns an empty array

Answer 2

AVAssetExportSession can be NULL, so need to check NULL before work on it https://developer.apple.com/library/content/qa/qa1730/_index.html