Ios AVPlayer项目获取nan持续时间（无效）_Ios_Objective C_Avasset

Ios AVPlayer项目获取nan持续时间（无效）

ios objective-c

Ios AVPlayer项目获取nan持续时间（无效）,ios,objective-c,avasset,Ios,Objective C,Avasset,我正在使用AVAsset类和传递的url。但它没有提供持续时间。我只得到nan CMTime audioDuration = audioAsset.duration; float audioDurationSeconds = CMTimeGetSeconds(audioDuration); double duration = CMTimeGetSeconds(asset.duration); 试试下面的代码 AVURLAsset *asset1 = [[AVURLAsset alloc] i

我正在使用

AVAsset

类和传递的url。但它没有提供持续时间。我只得到

nan

CMTime audioDuration = audioAsset.duration;
float audioDurationSeconds = CMTimeGetSeconds(audioDuration);
double duration = CMTimeGetSeconds(asset.duration);

试试下面的代码

 AVURLAsset *asset1 = [[AVURLAsset alloc] initWithURL:info[UIImagePickerControllerMediaURL] options:nil];   // info[UIImagePickerControllerMediaURL] is url(file url) here. You should pass your url here

   CMTime videoDuration = asset1.duration;

  float videoDurationInSeconds = CMTimeGetSeconds(videoDuration);

并确保您的url是文件url