我使用以下代码从存储到数组 (takenImages) 中的图像序列创建视频。 Duration 是以秒为单位的帧持续时间。
然后将所有内容保存到库中。
我的问题是，如果我在调试器上运行，视频会被完美保存，但如果我在没有调试器的情况下运行，视频不会完全保存(只保存了第一帧)。
int timescale = duration * [takenImages count];
for (int i = 0; i < [takenImages count]; i++) {
CVPixelBufferRef buffer = NULL;
buffer = [self pixelBufferFromCGImage:[[takenImages objectAtIndex:i] CGImage]];
BOOL append_ok = NO;
int j = 0;
while (!append_ok && j < 30) {
if (adaptor.assetWriterInput.readyForMoreMediaData) {
printf("appending %d attemp %d\n", i, j);
append_ok = [adaptor appendPixelBuffer:buffer withPresentationTime:CMTimeMake(i*duration,timescale)];
} else {
printf("adaptor not ready %d, %d\n", i, j);
[NSThread sleepForTimeInterval:0.1];
}
j++;
}
if (!append_ok) {
printf("error appending image %d times %d\n", i, j);
}
}
这是运行(调试器关闭)后我在控制台中的示例:
appending 0 attemp 0
appending 1 attemp 0
adaptor not ready 2, 0
adaptor not ready 2, 1
adaptor not ready 2, 2
adaptor not ready 2, 3
adaptor not ready 2, 4
adaptor not ready 2, 5
adaptor not ready 2, 6
adaptor not ready 2, 7
adaptor not ready 2, 8
adaptor not ready 2, 9
adaptor not ready 2, 10
adaptor not ready 2, 11
adaptor not ready 2, 12
adaptor not ready 2, 13
adaptor not ready 2, 14
adaptor not ready 2, 15
adaptor not ready 2, 16
adaptor not ready 2, 17
adaptor not ready 2, 18
adaptor not ready 2, 19
adaptor not ready 2, 20
adaptor not ready 2, 21
adaptor not ready 2, 22
adaptor not ready 2, 23
adaptor not ready 2, 24
adaptor not ready 2, 25
adaptor not ready 2, 26
adaptor not ready 2, 27
adaptor not ready 2, 28
adaptor not ready 2, 29
error appending image 2 times 30
adaptor not ready 3, 0
adaptor not ready 3, 1
adaptor not ready 3, 2
adaptor not ready 3, 3
adaptor not ready 3, 4
adaptor not ready 3, 5
adaptor not ready 3, 6
adaptor not ready 3, 7
adaptor not ready 3, 8
adaptor not ready 3, 9
adaptor not ready 3, 10
adaptor not ready 3, 11
adaptor not ready 3, 12
adaptor not ready 3, 13
adaptor not ready 3, 14
adaptor not ready 3, 15
adaptor not ready 3, 16
adaptor not ready 3, 17
adaptor not ready 3, 18
adaptor not ready 3, 19
adaptor not ready 3, 20
adaptor not ready 3, 21
adaptor not ready 3, 22
adaptor not ready 3, 23
adaptor not ready 3, 24
adaptor not ready 3, 25
adaptor not ready 3, 26
adaptor not ready 3, 27
adaptor not ready 3, 28
adaptor not ready 3, 29
error appending image 3 times 30
adaptor not ready 4, 0
adaptor not ready 4, 1
adaptor not ready 4, 2
adaptor not ready 4, 3
adaptor not ready 4, 4
adaptor not ready 4, 5
adaptor not ready 4, 6
adaptor not ready 4, 7
adaptor not ready 4, 8
adaptor not ready 4, 9
adaptor not ready 4, 10
adaptor not ready 4, 11
adaptor not ready 4, 12
adaptor not ready 4, 13
adaptor not ready 4, 14
adaptor not ready 4, 15
adaptor not ready 4, 16
adaptor not ready 4, 17
adaptor not ready 4, 18
adaptor not ready 4, 19
adaptor not ready 4, 20
adaptor not ready 4, 21
adaptor not ready 4, 22
adaptor not ready 4, 23
adaptor not ready 4, 24
adaptor not ready 4, 25
adaptor not ready 4, 26
adaptor not ready 4, 27
adaptor not ready 4, 28
adaptor not ready 4, 29
error appending image 4 times 30
有什么建议吗？
非常感谢。
再见
托马索
最佳答案
设置缓冲区时试试这个。
[adaptor appendPixelBuffer:buffer withPresentationTime:presentTime];
if(buffer)
CVBufferRelease(buffer);
[NSThread sleepForTimeInterval:0.05];
关于iphone - avfoundation:appendPixelBuffer withPresentationTime，适配器未准备好，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/5199673/