在最近的項(xiàng)目中，涉及到視頻上傳，在網(wǎng)上找了下資料，這里整理下來希望對(duì)大家有幫助，這里簡短談下整個(gè)流程；

1. 創(chuàng)建保存該視頻的文件夾

- (void)createVideoFolderIfNotExist{
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *path = [paths objectAtIndex:0];
    NSString *folderPath = [path stringByAppendingPathComponent:videoFolders];
    NSFileManager *fileManager = [NSFileManager defaultManager];
    BOOL isDir = NO;
    BOOL isDirExist = [fileManager fileExistsAtPath:folderPath isDirectory:&isDir];
    if(!(isDirExist && isDir)) {
        BOOL create = [fileManager createDirectoryAtPath:folderPath withIntermediateDirectories:YES attributes:nil error:nil];
        if(!create){
            NSLog(@"創(chuàng)建保存視頻文件夾失敗");
        }
    }
}

2. 視頻錄制完以后保存的視頻

- (NSString *)getVideoSaveFilePathString{
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *path = [paths objectAtIndex:0];
    path = [path stringByAppendingPathComponent:videoFolders];
    NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
    formatter.dateFormat = @"yyyyMMddHHmmss";
    NSString *nowTimeStr = [formatter stringFromDate:[NSDate dateWithTimeIntervalSinceNow:0]];
    NSString *fileName = [[path stringByAppendingPathComponent:nowTimeStr] stringByAppendingString:@".mov"];
    return fileName;
}

3. 根據(jù)以上兩個(gè)方法,最后合成為 mp4

- (NSString *)getVideoMergeFilePathString{
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *path = [paths objectAtIndex:0];
    path = [path stringByAppendingPathComponent:videoFolders];
    NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
    formatter.dateFormat = @"yyyyMMddHHmmss";
    NSString *nowTimeStr = [formatter stringFromDate:[NSDate dateWithTimeIntervalSinceNow:0]];
    NSString *fileName = [[path stringByAppendingPathComponent:nowTimeStr] stringByAppendingString:@"merge.mp4"];
    return fileName;
}

主要的代碼

    //根據(jù)設(shè)備輸出獲得連接
    AVCaptureConnection *captureConnection=[self.captureMovieFileOutput connectionWithMediaType:AVMediaTypeVideo];
    
    //根據(jù)連接取得設(shè)備輸出的數(shù)據(jù)
    if (![self.captureMovieFileOutput isRecording]) {
//        shootBt.backgroundColor = UIColorFromRGB(0xfa5f66);
        //預(yù)覽圖層和視頻方向保持一致
        captureConnection.videoOrientation=[self.captureVideoPreviewLayer connection].videoOrientation;
        [self.captureMovieFileOutput startRecordingToOutputFileURL:[NSURL fileURLWithPath:[self getVideoSaveFilePathString]] recordingDelegate:self];


＃視頻壓縮
 NSString *path = [self getVideoMergeFilePathString];
    NSURL *mergeFileURL = [NSURL fileURLWithPath:path];
    
    AVMutableVideoCompositionInstruction *mainInstruciton = [AVMutableVideoCompositionInstruction videoCompositionInstruction];
    mainInstruciton.timeRange = CMTimeRangeMake(kCMTimeZero, totalDuration);
    mainInstruciton.layerInstructions = layerInstructionArray;
    AVMutableVideoComposition *mainCompositionInst = [AVMutableVideoComposition videoComposition];
    mainCompositionInst.instructions = @[mainInstruciton];
    mainCompositionInst.frameDuration = CMTimeMake(1, 100);
    mainCompositionInst.renderSize = CGSizeMake(renderW, renderW*preLayerHWRate);
    
    AVAssetExportSession *exporter = [[AVAssetExportSession alloc] initWithAsset:mixComposition presetName:AVAssetExportPresetMediumQuality];
    exporter.videoComposition = mainCompositionInst;
    exporter.outputURL = mergeFileURL;
    exporter.outputFileType = AVFileTypeMPEG4; //mp4
    exporter.shouldOptimizeForNetworkUse = YES;
 
    [exporter exportAsynchronouslyWithCompletionHandler:^{
        if ([exporter status] == AVAssetExportSessionStatusCompleted) {
            dispatch_async(dispatch_get_main_queue(), ^{

＃＃＃＃＃＃＃＃＃＃＃＃＃＃＃＃＃  這里的二進(jìn)制就是上傳的東西了＃＃＃＃＃＃＃＃＃＃＃＃＃＃＃＃＃＃               
                NSData *data = [NSData dataWithContentsOfURL:exporter.outputURL];
    }];

上傳的方法

    NSString *imageStr = @"公司接口";
    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
    manager.responseSerializer = [AFHTTPResponseSerializer serializer];
    manager.requestSerializer = [AFHTTPRequestSerializer serializer];
    
    NSMutableDictionary *param = [NSMutableDictionary dictionary];
 
    [manager POST:imageStr parameters:param constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
            /*
           此方法參數(shù)
           1. 要上傳的[二進(jìn)制數(shù)據(jù)]
           2. 對(duì)應(yīng)網(wǎng)站上[upload.php中]處理文件的[字段"file"]
           3. 要保存在服務(wù)器上的[文件名]
           4. 上傳文件的[mimeType]
            */
        
        [formData appendPartWithFileData:datas name:@"video" fileName:@"videosNames" mimeType:@"video/mp4"];
//        [formData appendPartWithFormData:datas name:@"video"];
        
        } success:^(AFHTTPRequestOperation *operation, id responseObject) {
         NSDictionary *cashDic = [NSJSONSerialization JSONObjectWithData:responseObject options:NSJSONReadingMutableLeaves error:nil];
 
            NSLog(@"%@",cashDic[@"remark"]);
            
        } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
            NSLog(@"faile ----->%@",error);
            
        }];

感謝：https://blog.csdn.net/whjay520/article/details/53440369