An video editor,can trim a video or compose two video, and export video to the library.Details see demo.

+(void)trimWithVideoUrl:(NSURL *)videoUrl start:(CGFloat)startTime end:(CGFloat)endTime completion:(void(^)(BOOL success,NSString *error,AVAsset *asset))block;

+(void)composeWithOriginalVideoUrl:(NSURL *)originalVideoUrl otherVideoUrl:(NSURL *)otherVideoUrl completion:(void(^)(BOOL success,NSString *error,AVAsset *asset,AVMutableAudioMix *audioMix,AVMutableVideoComposition *videoComposition))block;

+(void)addWatermarkWithVideoUrl:(NSURL *)videoUrl image:(UIImage *)image frame:(CGRect)frame completion:(void(^)(BOOL success,NSString *error,AVAsset *asset,AVMutableVideoComposition *videoComposition))block;

+(void)addAudioWithVideoUrl:(NSURL *)videoUrl audioUrl:(NSURL *)audioUrl keepOriginAudio:(BOOL)keepOriginAudio completion:(void(^)(BOOL success,NSString *error,AVAsset *asset,AVMutableAudioMix *audioMix,AVMutableVideoComposition *videoComposition))block;

+(void)exportWithVideoUrl:(nonnull NSURL *)videoUrl saveToLibrary:(BOOL)isSave exportQuality:(CDPVideoEditorExportQuality)exportQuality;

+(void)writeVideoToPhotoLibrary:(nonnull NSURL *)url;