小编obj*_*per的帖子

我正在使用AVPlayer播放.m3u8文件.使用AVAssetImageGenerator使用以下代码从中提取图像:

AVURLAsset *asset1 = [[AVURLAsset alloc] initWithURL:mp.contentURL options:nil];
AVAssetImageGenerator *generate1 = [[AVAssetImageGenerator alloc] initWithAsset:asset1];
generate1.appliesPreferredTrackTransform = YES;
NSError *err = NULL;
CMTime time = CMTimeMake(1, 2);
CGImageRef oneRef = [generate1 copyCGImageAtTime:time actualTime:NULL error:&err];
img = [[UIImage alloc] initWithCGImage:oneRef];

它总是给我错误:

错误域= AVFoundationErrorDomain代码= -11800"操作无法完成"UserInfo = 0x7fb4e30cbfa0 {NSUnderlyingError = 0x7fb4e0e28530"操作无法完成.(OSStatus error -12782.)",NSLocalizedFailureReason =发生未知错误(-12782) ),NSLocalizedDescription =操作无法完成}

它适用于mp4,mov和所有主要视频扩展URL但不适用于m3u8.任何的想法？？

我使用以下代码将.mov文件上传到youtube.它上传成功但视频没有任何音频.如果我做错了,请告诉我....

- (void)uploadVideoFile {

  NSString *devKey = @"AI39si4w9QSgQj1JzNxzuiHhFbTm2iLt3mRerGh0UNvlryRPGgQhgIaJA8l95j4YwdC1jBIz6_JaX8eJm2GMgE06FtvIu7E9Sg";

  GDataServiceGoogleYouTube *service = [self youTubeService];
  [service setYouTubeDeveloperKey:devKey];

  NSString *username = txtYName.text;

  NSURL *url = [GDataServiceGoogleYouTube youTubeUploadURLForUserID:username];

  // load the file data
  NSString *path = [[NSHomeDirectory() stringByAppendingPathComponent:[NSString stringWithFormat:@"Documents/movie.mov"]] retain];
  NSData *data = [NSData dataWithContentsOfFile:path];
  NSString *filename = [path lastPathComponent];

  // gather all the metadata needed for the mediaGroup
  NSString *titleStr = txtName.text;
  GDataMediaTitle *title = [GDataMediaTitle textConstructWithString:titleStr];

  NSString *categoryStr = @"Comedy";
  GDataMediaCategory *category = [GDataMediaCategory mediaCategoryWithString:categoryStr];
  [category setScheme:kGDataSchemeYouTubeCategory];

  NSString *descStr = @"this is …