AVAssetWriter未知错误

问题描述

尝试使用 AVAssetWriter 从图像创建视频。已实现的代码大部分时间都可以正常工作，但是在随机时刻，编写器存在问题

Am trying to create video from images using AVAssetWriter. Implemented code works fine most of time, but in random moments there is problem with writer

AVAssetWriter *videoWriter;
...
[videoWriter finishWriting];
NSLog(@"videoWriter error %@",videoWriter.error);

收到的错误是：

Error Domain=AVFoundationErrorDomain Code=-11800 "The operation could not be completed"
UserInfo=0x1f839cd0 {NSLocalizedDescription=The operation could not be completed,
 NSUnderlyingError=0x1e59efb0 "The operation couldn’t be completed. (OSStatus error -12633.)",
NSLocalizedFailureReason=An unknown error occurred (-12633)}

写图像：

-(void)writeFrame:(WriteableFrame*)wF
{
    if([writerInput isReadyForMoreMediaData])
    {
        CMTime presentTime = CMTimeMake(wF.frameTime, 1000);
        CGImageRef tmpImgRef = [wF.currentImage CGImage];
        buffer = [self pixelBufferFromCGImage:tmpImgRef];
        if(buffer)
        {
            [adaptor appendPixelBuffer:buffer withPresentationTime:presentTime];
            CVPixelBufferRelease(buffer);
        }
    }
    else
    {
        NSLog(@"error");
    }
}

是否有人有这样的问题？

Is there someone with problem like this?

推荐答案

我发现了问题，它在相同的帧时间放置了两个帧。

I found the problem, it was putting two frames at the same frame time.

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