我使用此代码从图像创建视频 . 它将为一个图像创建完美的修复时间 . 但我的问题是为一帧的固定timimg创建视频 . 这是我的代码 .
imageArray是所有图像的数组，在数组中有每个对象的时间间隔 . 请帮我 .
CVPixelBufferRef buffer = NULL;
int frameCount = 0;
NSUInteger fps = 60;
for (int i=0; i<[imageArray count]; i++)
{
double numberOfSecondsPerFrame = [[[array objectAtIndex:i] objectForKey:@"timeinterval"] doubleValue];
double frameDuration = fps * numberOfSecondsPerFrame;
UIImage *img = [imageArray objectAtIndex:i];
buffer = [self pixelBufferFromCGImage:[img CGImage]size:size];
BOOL append_ok = NO;
int j = 0;
while (!append_ok && j < 60)
{
if (adaptor.assetWriterInput.readyForMoreMediaData)
{
//print out status:
NSLog(@"Processing video frame (%d,%d)",frameCount,[imageArray count]);
CMTime frameTime = CMTimeMake(frameCount*frameDuration,(int32_t) fps);
append_ok = [adaptor appendPixelBuffer:buffer withPresentationTime:frameTime];
if(!append_ok)
{
NSError *error = videoWriter.error;
if(error!=nil)
{
NSLog(@"Unresolved error %@,%@.", error, [error userInfo]);
}
}
}
else {
printf("adaptor not ready %d, %d\n", frameCount, j);
[NSThread sleepForTimeInterval:0.1];
}
j++;
}
if (!append_ok) {
printf("error appending image %d times %d\n, with error.", frameCount, j);
}
frameCount++;
}
NSLog(@"**************************************************");
//Finish the session:
[videoWriterInput markAsFinished];
[videoWriter finishWriting];
NSLog(@"Write Ended");
我有一些问题需要了解CMTIME . 请帮我解决这个问题 .