以1.5倍速,2倍速播放视频文件 [英] Playing video file with 1.5x, 2x speed
问题描述
我是一名iOS开发人员,应该制作应用以各种速度播放视频。
我认为没有API可以改变 MPMoviePlayerController
的回放速度。
I am an iOS developer who should make an app to play video with various speed.
I think there is no API to change playback speed on MPMoviePlayerController
.
我不能找到任何解决方案。
And I couldn't find any solutions.
您能否告诉我如何实施?
或者你能告诉我任何支持iOS上述功能的框架/库(SDK)吗?
Can you please tell me how to implement it? or Can you please tell me any Framework/library(SDK) that support above functions for iOS?
推荐答案
那里实际上是这样的财产。
There actually is such property.
MPMoviePlayerController
遵守 MPMediaPlayback protocol
参见
currentPlaybackRate
播放器的当前播放速率。 (必填)
The current playback rate for the player. (required)
@property(nonatomic) float currentPlaybackRate
讨论
Discussion
此值表示乘数当前项目的默认播放率
。值0.0表示播放停止
,而值1.0表示播放正常
速度。正值表示正向播放,而负值
表示反向播放。
This value represents a multiplier for the default playback rate of the current item. A value of 0.0 indicates that playback is stopped while a value of 1.0 indicates that playback is occurring at normal speed. Positive values indicate forward playback while negative values indicate reverse playback.
设置此属性的值会相应地更改播放速率
。
Setting the value of this property changes the playback rate accordingly.
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