我有一个简单的基于AVPlayer的OS X应用程序,可播放本地媒体。它有一个跳过前进和后退功能,基于-seekToTime:。在某些媒体上,让媒体继续播放(特别是未来)会有3-7秒的烦恼。我试过 - seekToTime:toleranceBefore:toleranceAfter :,具有可变公差。没有运气。
答案 0 :(得分:2)
发布以前解决的记录问题...我注意到,当播放暂停时,seekToTime:跳过工作正常。我立即(即几周后)意识到在寻找之前停止播放可能是有意义的,然后重新启动。到目前为止,问题已经100%解决,而且速度非常快。可能对尝试进行平滑循环的人有一些用处(但我不知道如何触发完成处理程序发出循环结束的信号)。不知道它是否适用于iOS。附上示例代码:
-(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;
}