我正在開發一個iPhone應用程序,我需要反轉視頻播放。我目前正在使用XCode 4.2。我想用MPMoviePlayerController反向播放電影。 但是當它反向播放時,它不如播放它那樣流暢。它變得有點波動,一點都不光滑。以下是我的代碼。MPMoviePlayerController反向播放電影(向後)在iPhone應用程序中不流暢iPhone
- (void)viewDidLoad{
//code for initializing the movie player
MPMoviePlayerController videoPlayer =
[[MPMoviePlayerController alloc] initWithContentURL:"URL"];
self.videoPlayer = videoPlayer;
[videoPlayer release];
self.videoPlayer.view.userInteractionEnabled = NO;
self.videoPlayer.initialPlaybackTime = -1;
self.videoPlayer.shouldAutoplay=NO;
[self.videoPlayer prepareToPlay];
//code for initializing the button
UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[button setTitle:@"Reverse" forState:UIControlStateNormal];
[button addTarget:self
action:@selector(reverseMovie) forControlEvents:UIControlEventTouchDown];
button.frame = CGRectMake(0, 0, 50, 40);
[self.view addSubview:button];
}
-(void)reverseMovie{
[self.videoPlayer setCurrentPlaybackRate:-1.0];
}
可能的解決方案是什麼?
您的代碼在createImageSequenceWithAsset後崩潰 – Ronak 2013-05-17 12:29:27
在GitHub上的問題文件。我會看看它。 – Mikael 2013-05-18 12:42:52
邁克你的示例代碼在這裏崩潰的任何建議? - BOOL附加= [assetWriterPixelBufferAdaptor appendPixelBuffer:pixelBuffer withPresentationTime:presentationTime]; – 2013-11-01 13:32:13