IOS视频压缩功能实现

绝地灬酷狼 2022-06-09 13:26 176阅读 0赞

NSString *path=@ “视频原路径”
             NSString *bakPath=@ “视频新路径”//新路径不能存在文件 如果存在是不能压缩成功的
            AVURLAsset *avAsset = [AVURLAsset URLAssetWithURL:[NSURL fileURLWithPath:path] options:nil];
            AVAssetExportSession *exportSession = [[AVAssetExportSession alloc] initWithAsset:avAsset presetName:AVAssetExportPreset1280x720];
            exportSession.outputURL = [NSURL fileURLWithPath:bakPath];
            exportSession.outputFileType = AVFileTypeMPEG4;
            exportSession.shouldOptimizeForNetworkUse= YES;
            [exportSession exportAsynchronouslyWithCompletionHandler:^(void)
             {
                 BOOL goToUploadFile=NO;
                 switch (exportSession.status) {
                     case AVAssetExportSessionStatusCancelled:
                         NSLog(@"AVAssetExportSessionStatusCancelled");
                         break;
                     case AVAssetExportSessionStatusUnknown:
                         NSLog(@"AVAssetExportSessionStatusUnknown");
                         break;
                     case AVAssetExportSessionStatusWaiting:
                         NSLog(@"AVAssetExportSessionStatusWaiting");
                         break;
                     case AVAssetExportSessionStatusExporting:
                         NSLog(@"AVAssetExportSessionStatusExporting");
                         break;
                     case AVAssetExportSessionStatusCompleted:
                       
                        _path=bakPath;
                      //压缩成功
                   
                         break;
                     case AVAssetExportSessionStatusFailed:
                     {
                         NSError *error=exportSession.error;
                         if (error) {
                          
                         }
                     }
                         
                        break;
                      default:
                        
                         break;
                 }
                
             }];