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我有一个需求:在播放视频流之前获取帧图像(m3u8),作为视频预览显示。我使用AVPlayerItemVideoOutpucopyPixelBufferForItemTime:itemTimeForDisplay:只有当播放视频流获取帧图像时,你有其他方法吗?谢谢!!如何在播放m3u8视频流之前获取帧图像? iOS
这是我的代码:
CMTime itemTime = self.playerItem.currentTime;
CVPixelBufferRef pixelBuffer = [_playerItemVideoOutput copyPixelBufferForItemTime:itemTime itemTimeForDisplay:nil];
CIImage *ciImage = [CIImage imageWithCVPixelBuffer:pixelBuffer];
CIContext *temporaryContext = [CIContext contextWithOptions:nil];
CGImageRef videoImage = [temporaryContext
createCGImage:ciImage
fromRect:CGRectMake(0, 0,
CVPixelBufferGetWidth(pixelBuffer),
CVPixelBufferGetHeight(pixelBuffer))];
UIImage *uiImage = [UIImage imageWithCGImage:videoImage];
CGImageRelease(videoImage);
NSLog(@"uiImage:%@", uiImage);