我正在使用 AVMutablecomposition 使用 AVplayer 播放在线视频文件。当我在浏览器上播放视频时,视频播放非常好,但我无法在我的 iPad 上播放。
这是代码:
self.composition = [AVMutableComposition composition];
NSURL *urlVideo = [NSURL URLWithString:@"{video location}"];
AVURLAsset *videoAsset = [[AVURLAsset alloc]initWithURL:urlVideo options:nil];
AVMutableCompositionTrack *compositionVideoTrack = [composition addMutableTrackWithMediaType:AVMediaTypeVideo preferredTrackID:kCMPersistentTrackID_Invalid];
NSError *error = NULL;
AVAssetTrack *videoTrack = [[videoAsset tracksWithMediaType:AVMediaTypeVideo]objectAtIndex:0];
CMTimeRange x = CMTimeRangeMake(kCMTimeZero, [videoAsset duration]);
[compositionVideoTrack insertTimeRange:x ofTrack:videoTrack atTime:kCMTimeZero error:nil];
以及设置 AVPlayer 的代码:
AVPlayerItem *playerItem = [[AVPlayerItem alloc]initWithAsset:composition];
self.player = [[AVPlayer alloc]initWithPlayerItem:playerItem];
AVPlayerLayer *layerVideo = [AVPlayerLayer playerLayerWithPlayer:self.player];
layerVideo.frame = self.view.layer.bounds;
layerVideo.backgroundColor = [UIColor orangeColor].CGColor;
layerVideo.position = CGPointMake(1024/2, 768/2-10);
[self.view.layer addSublayer:layerVideo];
[self.player play];
如果我使用“AVPlayerItem *playerItem = [AVPlayerItem playerItemWithAsset:videoAsset];” 而不是“AVPlayerItem *playerItem = [[AVPlayerItem alloc]initWithAsset:composition];” 然后我可以看到视频正在播放。
有人知道如何使用带有 AVMutablecomposition 的 AVplayer 播放视频吗?