iOS 导入视频旋转处理存在的问题

问题代码为-11840

结构

未命名文件.png

问题

当asset.during.timescale和videotrack.naturalTimeScale一致的, 就会无法生成视频, 如果和audiotrack.naturalTimeScale一致, 则可以成功处理视频

stack解决方法:

https://stackoverflow.com/questions/20219334/avassetexportsession-rotation-errors-when-video-is-from-camera-roll
https://stackoverflow.com/questions/34738063/use-avmutablevideocompositionlayerinstruction-modify-track-size-and-position-de
https://stackoverflow.com/questions/37844690/how-to-export-arbitrary-segment-of-video-operation-stopped-error-when-exporti
https://stackoverflow.com/questions/11754304/why-does-avassetexportsession-produce-an-empty-file