AFN上传并压缩视频详细版

1.获取视频路径

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2.创建压缩视频类
.h文件

import

import

@interface DdcompressVideo : NSObject
/**

• 压缩成功Block
• @param resultPath 返回压缩成功的视频路径
  /
  typedef void (^CompressionSuccessBlock)(NSString resultPath,float memorySize); // 定义成功的Block 函数
  /
• method Comperssion Video 压缩视频的方法, 该方法将压缩过的视频保存到沙河文件, 如果压缩过的视频不需要再进行保留, 可调用 removeCompressedVideoFromDocuments 方法, 将其删除即可
• @param url SourceVideoURL 被压缩视频的URL
• @param compressionType 压缩可选类型

AVAssetExportPresetLowQuality
AVAssetExportPresetMediumQuality
AVAssetExportPresetHighestQuality
AVAssetExportPreset640x480
AVAssetExportPreset960x540
AVAssetExportPreset1280x720
AVAssetExportPreset1920x1080
AVAssetExportPreset3840x2160

返回压缩后的视频路径
*/

• (void)compressedVideoOtherMethodWithURL:(NSURL *)url compressionType:(NSString *)compressionType compressionResultPath:(CompressionSuccessBlock)resultPathBlock;

/**

• 获取视频的大小
• @return 返回视频的大小 float 类型
  */

• (float)countVideoTotalMemorySizeWithURL:(NSURL *)url;

/**

• 清楚沙盒文件中, 压缩后的视频所有
  */

• (void)removeCompressedVideoFromDocuments;

@end
3。 。m文件

import "DdcompressVideo.h"

define CompressionVideoPaht [NSHomeDirectory() stringByAppendingFormat:@"/Documents/CompressionVideoField"]

@implementation DdcompressVideo

• (void)compressedVideoOtherMethodWithURL:(NSURL *)url compressionType:(NSString *)compressionType compressionResultPath:(CompressionSuccessBlock)resultPathBlock {

  NSString *resultPath;

  NSData *data = [NSData dataWithContentsOfURL:url];

  CGFloat totalSize = (float)data.length / 1024 / 1024;

  AVURLAsset *avAsset = [AVURLAsset URLAssetWithURL:url options:nil];

  NSArray *compatiblePresets = [AVAssetExportSession exportPresetsCompatibleWithAsset:avAsset];

  // 所支持的压缩格式中是否有 所选的压缩格式
  if ([compatiblePresets containsObject:compressionType]) {

    AVAssetExportSession *exportSession = [[AVAssetExportSession alloc] initWithAsset:avAsset presetName:compressionType];
    
    NSDateFormatter *formater = [[NSDateFormatter alloc] init];//用时间给文件全名，以免重复，在测试的时候其实可以判断文件是否存在若存在，则删除，重新生成文件即可
    
    [formater setDateFormat:@"yyyy-MM-dd-HH:mm:ss"];
    
    NSFileManager *manager = [NSFileManager defaultManager];
    
    BOOL isExists = [manager fileExistsAtPath:CompressionVideoPaht];
    
    if (!isExists) {
        
        [manager createDirectoryAtPath:CompressionVideoPaht withIntermediateDirectories:YES attributes:nil error:nil];
    }
    
    resultPath = [CompressionVideoPaht stringByAppendingPathComponent:[NSString stringWithFormat:@"outputJFVideo-%@.mov", [formater stringFromDate:[NSDate date]]]];
    
    NSLog(@"压缩文件路径 resultPath = %@",resultPath);
    
    exportSession.outputURL = [NSURL fileURLWithPath:resultPath];
    
    exportSession.outputFileType = AVFileTypeMPEG4;
    
    exportSession.shouldOptimizeForNetworkUse = YES;
    
    [exportSession exportAsynchronouslyWithCompletionHandler:^(void)
     
     {
         if (exportSession.status == AVAssetExportSessionStatusCompleted) {
             
             NSData *data = [NSData dataWithContentsOfFile:resultPath];
             
             float memorySize = (float)data.length / 1024 / 1024;
             NSLog(@"视频压缩后大小 %f", memorySize);
             
             resultPathBlock (resultPath, memorySize);
             
         } else {
             
             NSLog(@"压缩失败");
         }
         
     }];
  

  } else {
  // JFLog(@"不支持 %@ 格式的压缩", compressionType);
  }
  }

• (float)countVideoTotalMemorySizeWithURL:(NSURL *)url {
  NSData *data = [NSData dataWithContentsOfURL:url];
  CGFloat totalSize = (float)data.length / 1024 / 1024;
  return totalSize;
  }

• (void)removeCompressedVideoFromDocuments {
  NSFileManager *manager = [NSFileManager defaultManager];
  if ([manager fileExistsAtPath:CompressionVideoPaht]) {
  [[NSFileManager defaultManager] removeItemAtPath:CompressionVideoPaht error:nil];
  }
  }

@end
4.调用

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