当试图从PHAsset获取AVAssetExportSession的输出时,获得空结果
I'mattemptingtobuildasmalltoyiOSappthatmergestwovideoassetsfromtheuser'sphotoslibrary.I'vegottentothepointwhereIhavemergedthevideosusinganAVMutableCom...
I'mattemptingtobuildasmalltoyiOSappthatmergestwovideoassetsfromtheuser'sphotoslibrary.I'vegottentothepointwhereIhavemergedthevideosusinganAVMutableCom...