AVPlayer反向播放 [英] AVPlayer Reverse Playback

问题描述

如何让AVPlayer对象反向播放其视频内容？ AVPlayerItem类有一个名为reversePlaybackEndTime的属性，这让我觉得可以进行反向播放，但我似乎无法在文档中找到有关实际操作的内容。

How would one go about getting an AVPlayer object to play its video content in reverse? The AVPlayerItem class has a property called "reversePlaybackEndTime," which makes me think that reverse playback is thus possible, but I can't seem to find anything in the docs about actually doing it.

推荐答案

您可以反向播放，因为 queuePlayer 是 AVPlayer ：

首先到结束 video

CMTime durTime = self.queuePlayer.currentItem.asset.duration;
durationTime = CMTimeGetSeconds(durTime);
//NSLog(@"durationTime :%f : %f",durTime);
if (CMTIME_IS_VALID(durTime))
    [self.queuePlayer seekToTime:durTime toleranceBefore:kCMTimeZero toleranceAfter:kCMTimeZero];
else
    NSLog(@"In valid time");

现在设置 Rate AVPlayer 至否定值

[self.queuePlayer setRate:-1];

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