iOS AVPlayer获得fps [英] IOS AVPlayer get fps

问题描述

我试图弄清楚如何通过AVPlayer检索视频帧速率. AVPlayerItem具有一个速率变量，但它仅返回0到2之间的值(播放时通常为1).有人知道如何获得视频帧率吗?

Im trying to figure out how to retrieve a videos frame rate via AVPlayer. AVPlayerItem has a rate variable but it only returns a value between 0 and 2 (usually 1 when playing). Anybody have an idea how to get the video frame rate?

欢呼

推荐答案

使用AVAssetTrack's nominalFrameRate property.

以下获取FrameRate的方法:这里queuePlayer是AVPlayer

Below method to get FrameRate : Here queuePlayer is AVPlayer

-(float)getFrameRateFromAVPlayer
{
  float fps=0.00;
  if (self.queuePlayer.currentItem.asset) {
    AVAssetTrack * videoATrack = [[videoAsset tracksWithMediaType:AVMediaTypeVideo] lastObject];
    if(videoATrack)
    {
        fps = videoATrack.nominalFrameRate;
    }
  }
  return fps;
}

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