AVPlayer项目获得持续时间（无效）

Question

我正在使用AVAsset类并传递了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);

Answer 1

尝试以下代码，

 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);

并确保您的网址是文件网址!!