问AVPlayer seekToTime纺纱比萨饼

EN

-(void) movePlayheadToASpecificTime
{
    // assumes this is a method for an AVPlayerView subclass, properly wired with IB
    // self.player is a property of AVPlayerView, which points to an AVPlayer

    // save the current rate
    float currentPlayingRate = self.player.rate;

    // may need fancier tweaking if the time scale changes within asset
    int32_t timeScale = self.player.currentItem.asset.duration.timescale;

    // stop playback
    self.player.rate = 0;

    Float64 desiredTimeInSeconds = 4.5; // or whatever

    // convert desired time to CMTime
    CMTime target = CMTimeMakeWithSeconds(desiredTimeInSeconds, timeScale);

    // perform the move
    [self.player seekToTime:target];

    // restore playing rate
    self.player.rate = currentPlayingRate;

}