1v1_7/MSYOUPAI/Class/YQDiscover/ShortVideo/YOUPAISHMediaManager.m

//
//  YOUPAISHMediaManager.m
//  LoongsCity
//
//  Created by 查斯图 on 2018/3/30.
//  Copyright © 2018年 xiaoxiong. All rights reserved.
//

#import "YOUPAISHMediaManager.h"
#import <AVFoundation/AVFoundation.h>

@implementation YOUPAISHMediaManager

+ (void)youpaifcropWithVideoUrlStr:(NSURL *)videoUrl start:(CGFloat)startTime end:(CGFloat)endTime completion:(void (^)(NSURL *outputURL, Float64 videoDuration, BOOL isSuccess))completionHandle
{
    AVURLAsset *asset =[[AVURLAsset alloc] initWithURL:videoUrl options:nil];
    
    NSString *docDirPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask, YES) objectAtIndex:0];
    NSString *outputFilePath = [NSString stringWithFormat:@"%@/MediaTool%@.mp4", docDirPath , [self getCurrentTime]];
    NSURL *outputFileUrl = [NSURL fileURLWithPath:outputFilePath];
    
    NSArray *compatiblePresets = [AVAssetExportSession exportPresetsCompatibleWithAsset:asset];
    if ([compatiblePresets containsObject:AVAssetExportPresetMediumQuality])
    {
        
        AVAssetExportSession *exportSession = [[AVAssetExportSession alloc]
                                               initWithAsset:asset presetName:AVAssetExportPresetPassthrough];
        NSURL *outputURL = outputFileUrl;
        exportSession.outputURL = outputURL;
        exportSession.outputFileType = AVFileTypeMPEG4;
        exportSession.shouldOptimizeForNetworkUse = YES;
        
        CMTime start = CMTimeMakeWithSeconds(startTime, asset.duration.timescale);
        CMTime duration = CMTimeMakeWithSeconds(endTime,asset.duration.timescale);
        CMTimeRange range = CMTimeRangeMake(start, duration);
        exportSession.timeRange = range;
        
        [exportSession exportAsynchronouslyWithCompletionHandler:^{
            
            switch ([exportSession status]) {
                case AVAssetExportSessionStatusFailed:
                {
                    NSLog(@"合成失败：%@", [[exportSession error] description]);
                    completionHandle(outputURL, endTime, NO);
                }
                    break;
                case AVAssetExportSessionStatusCancelled:
                {
                    completionHandle(outputURL, endTime, NO);
                }
                    break;
                case AVAssetExportSessionStatusCompleted:
                {
                    completionHandle(outputURL, endTime, YES);
                }
                    break;
                default:
                {
                    completionHandle(outputURL, endTime, NO);
                } break;
            }
        }];
    }
}
   
//获取当地时间
+ (NSString *)getCurrentTime {
    NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
    [formatter setDateFormat:@"HH:mm:ss"];
    NSString *dateTime = [formatter stringFromDate:[NSDate date]];
    return dateTime;
}


@end