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POIphone SDK,Create a Video from UIImage
 

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  1. POIphone SDK,Create a Video from UIImage
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    <p>i needs to create a video from the image selected.</p> <p>i have code it shoudl work but its giving error while appending buffer.</p> <p>This is how both type of images has been saved.</p> <pre><code>-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)img editingInfo:(NSDictionary *)editInfo { // NSLog(@"Came From Here"); imgv.image = img; AppDelegate *app = (AppDelegate *)[[UIApplication sharedApplication] delegate]; app.imgmain = img; [self dismissModalViewControllerAnimated:YES]; RecordVoice *rec = [[RecordVoice alloc] initWithNibName:@"RecordVoice" bundle:nil]; rec.hidesBottomBarWhenPushed = YES; // rec.img.image = img; [self.navigationController pushViewController:rec animated:YES]; //[self presentModalViewController:rec animated:YES]; [rec release]; // flag =@"yes"; // need to show the upload image button now // [username, ititle resignFirstResponder]; } </code></pre> <p>on the other view controller i am showing this image on a uiimage view.</p> <p>and on button click i am converting that image to video with this code.</p> <pre><code>-(void)createVideoFile { NSString *documentsDirectoryPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0]; NSArray *dirContents = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:documentsDirectoryPath error:nil]; for (NSString *tString in dirContents) { if ([tString isEqualToString:@"test.mp4"]) { [[NSFileManager defaultManager]removeItemAtPath:[NSString stringWithFormat:@"%@/%@",documentsDirectoryPath,tString] error:nil]; } } NSString *nfile = [documentsDirectoryPath stringByAppendingPathComponent:@"test.mp4"]; AVURLAsset * urlAsset = [AVURLAsset URLAssetWithURL:recordedTmpFile options:nil]; NSLog(@"Write Started"); NSError *error = nil; CGSize size = img.image.size; //CGSizeMake(320, 480); NSLog(@"Write Started"); AVAssetWriter *videoWriter = [[AVAssetWriter alloc] initWithURL: [NSURL fileURLWithPath:nfile] fileType:AVFileTypeQuickTimeMovie error:&amp;error]; NSParameterAssert(videoWriter); NSDictionary *videoSettings = [NSDictionary dictionaryWithObjectsAndKeys: AVVideoCodecH264, AVVideoCodecKey, [NSNumber numberWithInt:size.width], AVVideoWidthKey, [NSNumber numberWithInt:size.height], AVVideoHeightKey, nil]; AVAssetWriterInput* videoWriterInput = [[AVAssetWriterInput assetWriterInputWithMediaType:AVMediaTypeVideo outputSettings:videoSettings] retain]; AVAssetWriterInputPixelBufferAdaptor *adaptor = [AVAssetWriterInputPixelBufferAdaptor assetWriterInputPixelBufferAdaptorWithAssetWriterInput:videoWriterInput sourcePixelBufferAttributes:nil]; NSParameterAssert(videoWriterInput); NSParameterAssert([videoWriter canAddInput:videoWriterInput]); videoWriterInput.expectsMediaDataInRealTime = YES; [videoWriter addInput:videoWriterInput]; //Start a session: [videoWriter startWriting]; [videoWriter startSessionAtSourceTime:kCMTimeZero]; CVPixelBufferRef buffer = NULL; //convert uiimage to CGImage. int frameCount = 0; buffer = [self pixelBufferFromCGImage:[img.image CGImage] andSize:size]; BOOL append_ok = NO; int j = 0; while (!append_ok &amp;&amp; j &lt; 30) { if (adaptor.assetWriterInput.readyForMoreMediaData) { printf("appending %d attemp %d\n", frameCount, j); CMTime frameTime = urlAsset.duration;//CMTimeMake(frameCount,(int32_t) 10); append_ok = [adaptor appendPixelBuffer:buffer withPresentationTime:frameTime]; //if(buffer) // CVBufferRelease(buffer); [NSThread sleepForTimeInterval:0.05]; } 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", frameCount, j); } frameCount++; [videoWriterInput markAsFinished]; [videoWriter finishWriting]; [self CompileFilesToMakeMovie]; [altv dismissWithClickedButtonIndex:0 animated:YES]; [altv release]; NSLog(@"Write Ended"); } </code></pre> <p>But this is not working...</p> <p>i am stuck can anyone please help me in this???? :(</p>
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    1. CO@MuTaTeD hye when i use code JPEG then it wont give error but it wont create a video. but when i use H264Codec it gives error. I have tried your code also but it gives error. this is almost your code only.
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    2. COhave you set a mixable (non exclusive) audio session category?
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    3. CO@Rhythmic yes adding a audio file to it. but later wards after the video is created... but i have figured out the problem... i have answered it.
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