I am recording video and saving it in application's document folder.I want to flip the frames of video and save it so that video play in flipped mode like mirrored video.I am not getting how to achieve this. I tried to flip the video but it is saving as blank video.
Here is code to flip video
NSURL *assetURL = self.outPutUrl;
AVAsset *movieAsset = [AVAsset assetWithURL:assetURL];
NSLog(#"Asset: %0.1f",CMTimeGetSeconds(movieAsset.duration));
NSLog(#"Asset Preferred Transform %#", NSStringFromCGAffineTransform(movieAsset.preferredTransform));
//Output Composition
AVMutableComposition *outputComposition = [[AVMutableComposition alloc] init];
AVMutableCompositionTrack *videoTrack = [outputComposition addMutableTrackWithMediaType:AVMediaTypeVideo
preferredTrackID:kCMPersistentTrackID_Invalid];
[videoTrack insertTimeRange:CMTimeRangeMake(kCMTimeZero, movieAsset.duration)
ofTrack:[[movieAsset tracksWithMediaType:AVMediaTypeVideo] objectAtIndex:0]
atTime:kCMTimeZero
error:nil];
[videoTrack setPreferredTransform:CGAffineTransformMakeScale(1, -1)];
AVMutableVideoCompositionLayerInstruction *videoLayerInstruction = [AVMutableVideoCompositionLayerInstruction videoCompositionLayerInstructionWithAssetTrack:videoTrack];
[videoLayerInstruction setTransform:CGAffineTransformMakeScale(1, -1) atTime:kCMTimeZero];
AVMutableVideoCompositionInstruction *videoInstruction = [AVMutableVideoCompositionInstruction videoCompositionInstruction];
videoInstruction.timeRange = CMTimeRangeMake(kCMTimeZero, movieAsset.duration);
videoInstruction.layerInstructions = [NSArray arrayWithObjects:videoLayerInstruction, nil];
AVMutableVideoComposition *outputVideoComposition = [AVMutableVideoComposition videoComposition];
outputVideoComposition.instructions = [NSArray arrayWithObjects:videoInstruction, nil];
outputVideoComposition.frameDuration = CMTimeMake(1, 30);
outputVideoComposition.renderSize = CGSizeMake(480, 640);
//Export
AVAssetExportSession *exporter = [[AVAssetExportSession alloc] initWithAsset:outputComposition presetName:AVAssetExportPresetHighestQuality] ;
exporter.videoComposition = outputVideoComposition;
NSArray *filePath = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [filePath objectAtIndex:0];
NSString *newPath = [documentsDirectory stringByAppendingPathComponent:
[NSString stringWithFormat:#"FinalVideo-%d.mov",arc4random() % 1000]];
[[NSFileManager defaultManager] removeItemAtPath:newPath error:nil];
exporter.outputURL = [NSURL fileURLWithPath:newPath];
exporter.outputFileType = AVFileTypeQuickTimeMovie;
NSLog(#"Starting export%#",exporter.outputURL);
[exporter exportAsynchronouslyWithCompletionHandler:^(void){
dispatch_async(dispatch_get_main_queue(), ^{
NSLog(#"Video exported");
NSLog(#"%#", newPath);
NSURL *newAssetURL = [NSURL fileURLWithPath:newPath];
AVAsset *newMovieAsset = [AVAsset assetWithURL:newAssetURL];
NSLog(#"New Asset %#",newMovieAsset);
NSLog(#"New Asset Duration: %0.1f",CMTimeGetSeconds(newMovieAsset.duration));
NSLog(#"New Asset Preferred Transform %#", NSStringFromCGAffineTransform(newMovieAsset.preferredTransform));
UISaveVideoAtPathToSavedPhotosAlbum(newPath, nil, nil, nil);
});
}];
Please help!
Thanks!
Check this link.. I think you want to reverse the video clip.. It worked for me..
Related
I have recorded one video and save it into document directory.
Now i want to edit video to slow,fast or normal speed.
I can able to do fast and normal speed of the video.
But i can't able to do slow speed of the video.It's alway converting to normal speed.
here is my code
AVMutableComposition *composition = [AVMutableComposition composition];
AVURLAsset * sourceAsset = [[AVURLAsset alloc] initWithURL:[NSURL fileURLWithPath:inputVideoPath] options:nil];
AVMutableCompositionTrack *compositionVideoTrack = [composition addMutableTrackWithMediaType:AVMediaTypeVideo preferredTrackID:kCMPersistentTrackID_Invalid];
BOOL ok = NO;
AVAssetTrack * sourceVideoTrack = [[sourceAsset tracksWithMediaType:AVMediaTypeVideo] objectAtIndex:0];
CMTimeRange x = CMTimeRangeMake(kCMTimeZero, [sourceAsset duration]);
ok = [compositionVideoTrack insertTimeRange:x ofTrack:sourceVideoTrack atTime:kCMTimeZero error:nil];
CMTime fiveSecondsIn;
if([Cell.text isEqualToString:#"Fast"]){
fiveSecondsIn = CMTimeMake(10,1);
}
else if([Cell.text isEqualToString:#"Normal"]){
fiveSecondsIn = CMTimeMake(1,1);
}
else if([Cell.textLabel.text isEqualToString:#"Slow"]){
fiveSecondsIn = CMTimeMake(1,.5);
}
CMTimeRange video_timeRange = CMTimeRangeMake(kCMTimeZero,sourceAsset.duration);
[compositionVideoTrack scaleTimeRange:video_timeRange toDuration:fiveSecondsIn];
if([[NSFileManager defaultManager] fileExistsAtPath:filePath]){
[[NSFileManager defaultManager] removeItemAtPath:filePath error:nil];
}
NSURL *exportUrl = [NSURL fileURLWithPath:filePath];
AVAssetExportSession *exporter = [[AVAssetExportSession alloc]initWithAsset:composition presetName:AVAssetExportPresetHighestQuality];
exporter.outputURL=exportUrl;
exporter.outputFileType = #"com.apple.quicktime-movie";
[exporter exportAsynchronouslyWithCompletionHandler:^(void){
[self performSelectorOnMainThread:#selector(playnewVideo) withObject:nil waitUntilDone:NO];
}];
I wanna merge a .caf file and a .mp3 file to a .mp3 file on iPhone,or I can convert them to .aac and then merge them.How can I do this ?
(Just Like Kala OK,I wanna merge my voice and the music together)
You need to decode both files to LPCM (plain old ints), add/mix them together then re-encode. The iPhone SDK does not support MP3 encoding, so you should re-encode to AAC.
The Apple sample code iPhoneExtAudioFileConvertTest would be a good place to start.
You can use this method
- (BOOL) combineVoices1
{
NSError *error = nil;
BOOL ok = NO;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
CMTime nextClipStartTime = kCMTimeZero;
//Create AVMutableComposition Object.This object will hold our multiple AVMutableCompositionTrack.
AVMutableComposition *composition = [[AVMutableComposition alloc] init];
AVMutableCompositionTrack *compositionAudioTrack = [composition addMutableTrackWithMediaType:AVMediaTypeAudio preferredTrackID:kCMPersistentTrackID_Invalid];
[compositionAudioTrack setPreferredVolume:0.8];
NSString *soundOne =[[NSBundle mainBundle]pathForResource:#"test1" ofType:#"caf"];
NSURL *url = [NSURL fileURLWithPath:soundOne];
AVAsset *avAsset = [AVURLAsset URLAssetWithURL:url options:nil];
NSArray *tracks = [avAsset tracksWithMediaType:AVMediaTypeAudio];
AVAssetTrack *clipAudioTrack = [[avAsset tracksWithMediaType:AVMediaTypeAudio] objectAtIndex:0];
[compositionAudioTrack insertTimeRange:CMTimeRangeMake(kCMTimeZero, avAsset.duration) ofTrack:clipAudioTrack atTime:kCMTimeZero error:nil];
AVMutableCompositionTrack *compositionAudioTrack1 = [composition addMutableTrackWithMediaType:AVMediaTypeAudio preferredTrackID:kCMPersistentTrackID_Invalid];
[compositionAudioTrack setPreferredVolume:0.3];
NSString *soundOne1 =[[NSBundle mainBundle]pathForResource:#"test" ofType:#"caf"];
NSURL *url1 = [NSURL fileURLWithPath:soundOne1];
AVAsset *avAsset1 = [AVURLAsset URLAssetWithURL:url1 options:nil];
NSArray *tracks1 = [avAsset1 tracksWithMediaType:AVMediaTypeAudio];
AVAssetTrack *clipAudioTrack1 = [[avAsset1 tracksWithMediaType:AVMediaTypeAudio] objectAtIndex:0];
[compositionAudioTrack1 insertTimeRange:CMTimeRangeMake(kCMTimeZero, avAsset.duration) ofTrack:clipAudioTrack1 atTime:kCMTimeZero error:nil];
AVMutableCompositionTrack *compositionAudioTrack2 = [composition addMutableTrackWithMediaType:AVMediaTypeAudio preferredTrackID:kCMPersistentTrackID_Invalid];
[compositionAudioTrack2 setPreferredVolume:1.0];
NSString *soundOne2 =[[NSBundle mainBundle]pathForResource:#"song" ofType:#"caf"];
NSURL *url2 = [NSURL fileURLWithPath:soundOne2];
AVAsset *avAsset2 = [AVURLAsset URLAssetWithURL:url2 options:nil];
NSArray *tracks2 = [avAsset2 tracksWithMediaType:AVMediaTypeAudio];
AVAssetTrack *clipAudioTrack2 = [[avAsset2 tracksWithMediaType:AVMediaTypeAudio] objectAtIndex:0];
[compositionAudioTrack1 insertTimeRange:CMTimeRangeMake(kCMTimeZero, avAsset2.duration) ofTrack:clipAudioTrack2 atTime:kCMTimeZero error:nil];
AVAssetExportSession *exportSession = [AVAssetExportSession
exportSessionWithAsset:composition
presetName:AVAssetExportPresetAppleM4A];
if (nil == exportSession) return NO;
NSString *soundOneNew = [documentsDirectory stringByAppendingPathComponent:#"combined10.m4a"];
//NSLog(#"Output file path - %#",soundOneNew);
// configure export session output with all our parameters
exportSession.outputURL = [NSURL fileURLWithPath:soundOneNew]; // output path
exportSession.outputFileType = AVFileTypeAppleM4A; // output file type
// perform the export
[exportSession exportAsynchronouslyWithCompletionHandler:^{
if (AVAssetExportSessionStatusCompleted == exportSession.status) {
NSLog(#"AVAssetExportSessionStatusCompleted");
} else if (AVAssetExportSessionStatusFailed == exportSession.status) {
// a failure may happen because of an event out of your control
// for example, an interruption like a phone call comming in
// make sure and handle this case appropriately
NSLog(#"AVAssetExportSessionStatusFailed");
} else {
NSLog(#"Export Session Status: %d", exportSession.status);
}
}];
return YES;
}
you can use the this SDAVAssetExportSession with the following code to export many files to AAC:
-(void)mergeAudioFiles
{
NSFileManager * fm = [[NSFileManager alloc] init];
NSError * error;
NSArray * filesNames = **NSArray of File Names;
NSString * filePath = #"Dest File Name";
NSString * pathToSave =[NSString stringWithFormat:#"%#%#",filePath,#".m4a"];
CMTime startTime = kCMTimeZero;
AVMutableComposition *composition = [AVMutableComposition composition];
AVMutableCompositionTrack *compositionAudioTrack =[AVMutableCompositionTrack alloc];
compositionAudioTrack = [composition addMutableTrackWithMediaType:AVMediaTypeAudio preferredTrackID:kCMPersistentTrackID_Invalid];
float audioEndTime=0;
for (NSString *fileName in filesNames) {
NSURL *audioUrl = [NSURL fileURLWithPath:fileName];
AVURLAsset *audioasset = [[AVURLAsset alloc]initWithURL:audioUrl options:nil];
CMTimeRange timeRange = CMTimeRangeMake(kCMTimeZero, audioasset.duration);
AVAssetTrack *audioAssetTrack= [[audioasset tracksWithMediaType:AVMediaTypeAudio] lastObject];
[compositionAudioTrack insertTimeRange:timeRange ofTrack:audioAssetTrack atTime:startTime error:&error];
startTime = CMTimeAdd(startTime, timeRange.duration);
CMTime assetTime2 = [audioasset duration];
Float64 duration2 = CMTimeGetSeconds(assetTime2);
audioEndTime+=duration2;
}
NSURL *exportUrl = [NSURL fileURLWithPath:pathToSave];
float audioStartTime=0;
CMTime startTime1 = CMTimeMake((int)(floor(audioStartTime * 100)), 100);
CMTime stopTime = CMTimeMake((int)(ceil(audioEndTime * 100)), 100);
CMTimeRange exportTimeRange = CMTimeRangeFromTimeToTime(startTime1, stopTime);
SDAVAssetExportSession *encoder = [SDAVAssetExportSession.alloc initWithAsset:composition];
encoder.outputFileType = AVFileTypeAppleM4A;
encoder.outputURL = exportUrl;
encoder.audioSettings = #
{
AVFormatIDKey: #(kAudioFormatMPEG4AAC),
AVNumberOfChannelsKey: #2,
AVSampleRateKey: #44100,
AVEncoderBitRateKey: #128000,
};
encoder.timeRange = exportTimeRange;
dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);
NSLog(#"Starting Audio Marge");
[encoder exportAsynchronouslyWithCompletionHandler:^
{
if (encoder.status == AVAssetExportSessionStatusCompleted)
{
NSLog(#"Audio Marge succeeded");
NSError * err = NULL;
BOOL result = [fm moveItemAtPath:pathToSave toPath:filePath error:&err];
if(!result) {
NSLog(#"Error: %#", err);
}
NSLog(#"Audio Copied");
} else if (encoder.status == AVAssetExportSessionStatusCancelled) {
NSLog(#"Audio export cancelled");
} else {
NSLog(#"Audio export failed with error: %# (%ld)", encoder.error.localizedDescription, encoder.error.code);
}
dispatch_semaphore_signal(semaphore);
}];
NSLog(#"Audio Wait to Finish");
dispatch_semaphore_wait(semaphore, DISPATCH_TIME_FOREVER);
//cleanup
for (NSString *fileName in filesNames) {
[fm removeItemAtPath:fileName error:&error];
}
NSLog(#"Audio Marge Finished");
}
merging two audio files code
-(void)mergeTwoAudioFile
{
NSError * error;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [[paths objectAtIndex:0] stringByAppendingPathComponent:#"Music_Directory"];
//first audio path
NSString *firstPath= [documentsDirectory stringByAppendingPathComponent:#"audio01.m4a"];
NSURL *audioUrl1 = [NSURL fileURLWithPath:firstPath];
AVMutableComposition *mixComposition = [AVMutableComposition composition];
AVMutableCompositionTrack *audioCompositionTrack1 =[[AVMutableCompositionTrack alloc]init];
AVURLAsset *audioasset1 = [[AVURLAsset alloc]initWithURL:audioUrl1 options:nil];
AVAssetTrack *audioAssetTrack1= [[audioasset1 tracksWithMediaType:AVMediaTypeAudio] lastObject];
audioCompositionTrack1 = [mixComposition addMutableTrackWithMediaType:AVMediaTypeAudio preferredTrackID:kCMPersistentTrackID_Invalid];
CMTime tempTime1= mixComposition.duration;
[audioCompositionTrack1 insertTimeRange:CMTimeRangeMake(kCMTimeZero, audioasset1.duration) ofTrack:audioAssetTrack1 atTime:tempTime1 error:&error];
//========second audio
NSString *secondPath= [documentsDirectory stringByAppendingPathComponent:#"audio02.m4a"];
NSURL *audioUrl2 = [NSURL fileURLWithPath:secondPath];
AVMutableCompositionTrack *audioCompositionTrack2 =[[AVMutableCompositionTrack alloc]init];
AVURLAsset *audioasset2 = [[AVURLAsset alloc]initWithURL:audioUrl2 options:nil];
AVAssetTrack *audioAssetTrack2= [[audioasset2 tracksWithMediaType:AVMediaTypeAudio] lastObject];
audioCompositionTrack2 = [mixComposition addMutableTrackWithMediaType:AVMediaTypeAudio preferredTrackID:kCMPersistentTrackID_Invalid];
CMTime tempTime2 = mixComposition.duration;
[audioCompositionTrack2 insertTimeRange:CMTimeRangeMake(kCMTimeZero, audioasset2.duration) ofTrack:audioAssetTrack2 atTime:tempTime2 error:&error];
NSString * pathToSave = [NSString stringWithFormat:#"finalTest.m4a"];
pathToSave =[documentsDirectory stringByAppendingPathComponent:pathToSave];
NSURL *movieUrl = [NSURL fileURLWithPath:pathToSave];
AVAssetExportSession *exporter =[[AVAssetExportSession alloc] initWithAsset:mixComposition presetName:AVAssetExportPresetAppleM4A];
exporter.shouldOptimizeForNetworkUse = YES;
exporter.outputURL = movieUrl;
exporter.outputFileType = AVFileTypeAppleM4A;
//====================================================================
float audioStartTime=0;
CMTime assetTime1 = [audioasset1 duration];
Float64 duration1 = CMTimeGetSeconds(assetTime1);
CMTime assetTime2 = [audioasset2 duration];
Float64 duration2 = CMTimeGetSeconds(assetTime2);
float audioEndTime=duration1+duration2;
CMTime startTime = CMTimeMake((int)(floor(audioStartTime * 100)), 100);
CMTime stopTime = CMTimeMake((int)(ceil(audioEndTime * 100)), 100);
CMTimeRange exportTimeRange = CMTimeRangeFromTimeToTime(startTime, stopTime);
exporter.timeRange =exportTimeRange;
//====================================================================
[exporter exportAsynchronouslyWithCompletionHandler:^(void) {
NSString* message;
switch (exporter.status) {
case AVAssetExportSessionStatusFailed:
message = [NSString stringWithFormat:#"Export failed. Error: %#", exporter.error.description];
NSLog(#"%#", message);
break;
case AVAssetExportSessionStatusCompleted:
message = [NSString stringWithFormat:#"Export completed"];
NSLog(#"%#", message);
break;
case AVAssetExportSessionStatusCancelled:
message = [NSString stringWithFormat:#"Export cancelled!"];
NSLog(#"%#", message);
break;
default:
NSLog(#"Export unhandled status: %ld", (long)exporter.status);
break;
}
}];
}
i am creating a movie with an array of images and a audio file and saving that created movie to photo library, in simulator i am getting correct movie with my array of image and audio file but while running in device i am not getting my resulted movie instead i am getting the video what i added(OutPut.mov i used in my code) to write my output file (mixed audio and array of images file).
here is my code to save my mixed audio and array of images file to photo lib:
AVMutableComposition* mixComposition = [AVMutableComposition composition];
NSString* audio_inputFilePath = [[NSBundle mainBundle] pathForResource:#"Ruler" ofType:#"caf"];
NSURL* audio_inputFileUrl = [NSURL fileURLWithPath:audio_inputFilePath];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = ([paths count] > 0) ? [paths objectAtIndex:0] : nil;
NSString *video_inputFilePath = [documentsDirectory stringByAppendingPathComponent:#"videoOutput1234videoOutput1234.mp4"];
NSLog(#"output url %#",video_inputFilePath);
NSURL* video_inputFileUrl = [NSURL fileURLWithPath:video_inputFilePath];
NSString* outputFilePath = [[NSBundle mainBundle] pathForResource:#"OutPut" ofType:#"mov"];
NSURL* outputFileUrl = [NSURL fileURLWithPath:outputFilePath];
if ([[NSFileManager defaultManager] fileExistsAtPath:outputFilePath])
[[NSFileManager defaultManager] removeItemAtPath:outputFilePath error:nil];
if ([[NSFileManager defaultManager] fileExistsAtPath:outputFilePath])
[[NSFileManager defaultManager] removeItemAtPath:outputFilePath error:nil];
CMTime nextClipStartTime = kCMTimeZero;
AVURLAsset* videoAsset = [[AVURLAsset alloc]initWithURL:video_inputFileUrl options:nil];
CMTimeRange video_timeRange = CMTimeRangeMake(kCMTimeZero,videoAsset.duration);
AVMutableCompositionTrack *a_compositionVideoTrack = [mixComposition addMutableTrackWithMediaType:AVMediaTypeVideo preferredTrackID:kCMPersistentTrackID_Invalid];
[a_compositionVideoTrack insertTimeRange:video_timeRange ofTrack:[[videoAsset tracksWithMediaType:AVMediaTypeVideo] objectAtIndex:0] atTime:nextClipStartTime error:nil];
AVURLAsset* audioAsset = [[AVURLAsset alloc]initWithURL:audio_inputFileUrl options:nil];
CMTimeRange audio_timeRange = CMTimeRangeMake(kCMTimeZero, audioAsset.duration);
AVMutableCompositionTrack *b_compositionAudioTrack = [mixComposition addMutableTrackWithMediaType:AVMediaTypeAudio preferredTrackID:kCMPersistentTrackID_Invalid];
[b_compositionAudioTrack insertTimeRange:audio_timeRange ofTrack:[[audioAsset tracksWithMediaType:AVMediaTypeAudio] objectAtIndex:0] atTime:nextClipStartTime error:nil];
AVAssetExportSession* _assetExport = [[AVAssetExportSession alloc] initWithAsset:mixComposition presetName:AVAssetExportPresetHighestQuality];
_assetExport.outputFileType = #"com.apple.quicktime-movie";
_assetExport.outputURL = outputFileUrl;
[_assetExport exportAsynchronouslyWithCompletionHandler:^(void ) {[self saveVideoToAlbum:outputFilePath]; } ];
You have to write the video file into the photolibrary path like..
- (void)writeVideoToPhotoLibrary:(NSURL *)url
{
ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];
[library writeVideoAtPathToSavedPhotosAlbum:url completionBlock:^(NSURL *assetURL, NSError *error){
if (error) {
NSLog(#"Video could not be saved");
}
}];
[library release];
}
- (void)video:(NSString *)videoPath didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo {
// Let's see what happened
NSLog(#"finished");
NSLog(#":error : %#", error);
}
In One of my application i need to add some image in video. so i cut break video in two part and also make one video from that image. now i want to combine this three video file and make one video file. but i am not get any idea to combine this three video. i see some code over here. but that is not helpful to me. for break video and for make video from image i used below code now i want code to merge this all video.
Any other idea for put current view screen in video file in between.
For break video file
NSURL *url = [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:#"Affagogato" ofType:#"mp4"]];
AVURLAsset *anAsset = [[AVURLAsset alloc] initWithURL:url options:nil];
for(int i = 0; i < 2; i++) {
AVAssetExportSession *exportSession = [[AVAssetExportSession alloc]
initWithAsset:anAsset presetName:AVAssetExportPresetLowQuality];
NSString *filePath = nil;
NSUInteger count = 0;
do {
filePath = NSTemporaryDirectory();
NSString *numberString = count > 0 ? [NSString stringWithFormat:#"-%i", count] : #"";
filePath = [filePath stringByAppendingPathComponent:[NSString stringWithFormat:#"Output-%#.mov", numberString]];
count++;
} while([[NSFileManager defaultManager] fileExistsAtPath:filePath]);
exportSession.outputURL = [NSURL fileURLWithPath:filePath];
exportSession.outputFileType = AVFileTypeQuickTimeMovie;
CMTimeRange range;
if(i == 0){
CMTime start = CMTimeMakeWithSeconds(0.0, 600);
CMTime duration = CMTimeMakeWithSeconds(10.0, 600);
range = CMTimeRangeMake(start, duration);
}else{
CMTime start = CMTimeMakeWithSeconds(10.0, 600);
range = CMTimeRangeMake(start, anAsset.duration);
}
exportSession.timeRange = range;
[exportSession exportAsynchronouslyWithCompletionHandler:^
{
dispatch_async(dispatch_get_main_queue(), ^{
[self exportDidFinish:exportSession Tag:i];
});
}];
}
Get video from Images
CGRect rect=CGRectMake(0, 0, 320, 480);
view = [[UIView alloc]initWithFrame:rect];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = ([paths count] > 0) ? [paths objectAtIndex:0] : nil;
NSString *path = [documentsDirectory stringByAppendingPathComponent:[#"video2" stringByAppendingString:#".mov"]];
CGSize size = self.view.frame.size;
NSMutableDictionary *attributes = [[NSMutableDictionary alloc]init];
[attributes setObject:[NSNumber numberWithUnsignedInt:kCVPixelFormatType_32ARGB] forKey:(NSString*)kCVPixelBufferPixelFormatTypeKey];
[attributes setObject:[NSNumber numberWithUnsignedInt:320] forKey:(NSString*)kCVPixelBufferWidthKey];
[attributes setObject:[NSNumber numberWithUnsignedInt:480] forKey:(NSString*)kCVPixelBufferHeightKey];
NSError *error = nil;
AVAssetWriter *videoWriter = [[AVAssetWriter alloc] initWithURL:
[NSURL fileURLWithPath:path] fileType:AVFileTypeQuickTimeMovie
error:&error];
NSParameterAssert(videoWriter);
NSDictionary *videoSettings = [NSDictionary dictionaryWithObjectsAndKeys:
AVVideoCodecH264, AVVideoCodecKey,
[NSNumber numberWithInt:size.width], AVVideoWidthKey,
[NSNumber numberWithInt:size.height], AVVideoHeightKey,
nil];
AVAssetWriterInput* writerInput = [[AVAssetWriterInput
assetWriterInputWithMediaType:AVMediaTypeVideo
outputSettings:videoSettings] retain];
AVAssetWriterInputPixelBufferAdaptor *adaptor = [AVAssetWriterInputPixelBufferAdaptor
assetWriterInputPixelBufferAdaptorWithAssetWriterInput:writerInput
sourcePixelBufferAttributes:nil];
NSParameterAssert(writerInput);
NSParameterAssert([videoWriter canAddInput:writerInput]);
[videoWriter addInput:writerInput];
//Start a session:
[videoWriter startWriting];
[videoWriter startSessionAtSourceTime:kCMTimeZero];
CVPixelBufferRef buffer = NULL;
//convert uiimage to CGImage.
xPixel=0;
yPixel=250;
buffer = [self pixelBufferFromCGImage:[[UIImage imageNamed:#"1.jpeg"] CGImage]];
CVPixelBufferPoolCreatePixelBuffer (NULL, adaptor.pixelBufferPool, &buffer);
[adaptor appendPixelBuffer:buffer withPresentationTime:kCMTimeZero];
for (int i = 0;i<2; i++)
{
if([writerInput isReadyForMoreMediaData])
{
//NSLog(#"inside for loop %d",i);
for(int pframetime=1;pframetime<=2;pframetime++)
{
CMTime frameTime = CMTimeMake(pframetime,25);
CMTime lastTime=CMTimeMake(i,1); //i is from 0 to 19 of the loop above
CMTime presentTime=CMTimeAdd(lastTime, frameTime);
if(i==0)
buffer = [self pixelBufferFromCGImage:[[UIImage imageNamed:#"1.jpeg"] CGImage]];
else
buffer = [self pixelBufferFromCGImage:[[UIImage imageNamed:#"2.jpeg"] CGImage]];
while ( ![writerInput isReadyForMoreMediaData] )
{
[NSThread sleepForTimeInterval:0.05];
}
[adaptor appendPixelBuffer:buffer withPresentationTime:presentTime];
i++;
}
if(buffer)
CVBufferRelease(buffer);
//[NSThread sleepForTimeInterval:0.1];
}
}
[writerInput markAsFinished];
[videoWriter finishWriting];
[videoPathArray addObject:path];
//Finish the session:
[videoWriter release];
[writerInput release];
CVPixelBufferPoolRelease(adaptor.pixelBufferPool);
For Merge video files i try this code but not useful here is some blank screen between video
AVMutableComposition* mixComposition = [AVMutableComposition composition];
NSString *documentsDirectoryPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
NSString* video_inputFilePath1 = [videoPathArray objectAtIndex:1];
NSURL* video_inputFileUrl1 = [NSURL fileURLWithPath:video_inputFilePath1];
NSString* video_inputFilePath2 = [videoPathArray objectAtIndex:0];
NSURL* video_inputFileUrl2 = [NSURL fileURLWithPath:video_inputFilePath2];
NSString* video_inputFilePath3 = [videoPathArray objectAtIndex:2];
NSURL* video_inputFileUrl3 = [NSURL fileURLWithPath:video_inputFilePath3];
NSString* outputFileName = #"outputFile.mov";
NSString* outputFilePath = [NSString stringWithFormat:#"%#/%#",documentsDirectoryPath,outputFileName];
NSURL* outputFileUrl = [NSURL fileURLWithPath:outputFilePath];
if ([[NSFileManager defaultManager] fileExistsAtPath:outputFilePath])
[[NSFileManager defaultManager] removeItemAtPath:outputFilePath error:nil];
CMTime nextClipStartTime = kCMTimeZero;
AVURLAsset* videoAsset1 = [[AVURLAsset alloc]initWithURL:video_inputFileUrl1 options:nil];
AVURLAsset* videoAsset2 = [[AVURLAsset alloc]initWithURL:video_inputFileUrl2 options:nil];
AVURLAsset* videoAsset3 = [[AVURLAsset alloc]initWithURL:video_inputFileUrl3 options:nil];
CMTimeRange video_timeRange1 = CMTimeRangeMake(kCMTimeZero,videoAsset1.duration);
AVMutableCompositionTrack *a_compositionVideoTrack1 = [mixComposition addMutableTrackWithMediaType:AVMediaTypeVideo preferredTrackID:kCMPersistentTrackID_Invalid];
[a_compositionVideoTrack1 insertTimeRange:video_timeRange1 ofTrack:[[videoAsset1 tracksWithMediaType:AVMediaTypeVideo] objectAtIndex:0] atTime:nextClipStartTime error:nil];
CMTimeRange video_timeRange3 = CMTimeRangeMake(nextClipStartTime,videoAsset3.duration);
[a_compositionVideoTrack1 insertTimeRange:video_timeRange3 ofTrack:[[videoAsset3 tracksWithMediaType:AVMediaTypeVideo] objectAtIndex:0] atTime:videoAsset1.duration error:nil];
CMTimeRange video_timeRange2 = CMTimeRangeMake(nextClipStartTime,videoAsset1.duration);
[a_compositionVideoTrack1 insertTimeRange:video_timeRange2 ofTrack:[[videoAsset2 tracksWithMediaType:AVMediaTypeVideo] objectAtIndex:0] atTime:videoAsset1.duration error:nil];
AVAssetExportSession* _assetExport = [[AVAssetExportSession alloc] initWithAsset:mixComposition presetName:AVAssetExportPresetLowQuality];
_assetExport.shouldOptimizeForNetworkUse = YES;
_assetExport.outputFileType = #"com.apple.quicktime-movie";
_assetExport.outputURL = outputFileUrl;
Try watching the video called "Working with Media in AV Foundation" in the apple developers portal. It tells you how to do what you are describing.
https://developer.apple.com/videos/wwdc/2011/
I am newcomer in Objective-C and have experience only 5 months in iPhone development.
What I need:
I need to concatenate 2 or more audio files into one, and export result as aiff, mp3, caf or m4a format.
For example:
First audio file containing "You need", second "download" and third "document".
Every audio part depends on actions from user.
I spent 2 days without luck. That place is my last frontier.
I will very appreciate for a piece of code.
Code below can be used to merge audio files.
Input files: Ids of the files to be supplied in array audioIds.
Eg. audio1.mp3, audio2.mp3 … audioN.mp3 to be available in documents folder
Output file: combined.m4a
- (BOOL) combineVoices {
NSError *error = nil;
BOOL ok = NO;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
CMTime nextClipStartTime = kCMTimeZero;
//Create AVMutableComposition Object.This object will hold our multiple AVMutableCompositionTrack.
AVMutableComposition *composition = [[AVMutableComposition alloc] init];
AVMutableCompositionTrack *compositionAudioTrack = [composition addMutableTrackWithMediaType:AVMediaTypeAudio preferredTrackID:kCMPersistentTrackID_Invalid];
for (int i = 0; i< [self.audioIds count]; i++) {
int key = [[self.audioIds objectAtIndex:i] intValue];
NSString *audioFileName = [NSString stringWithFormat:#"audio%d", key];
//Build the filename with path
NSString *soundOne = [documentsDirectory stringByAppendingPathComponent:[NSString stringWithFormat:#"%#.mp3", audioFileName]];
//NSLog(#"voice file - %#",soundOne);
NSURL *url = [NSURL fileURLWithPath:soundOne];
AVAsset *avAsset = [AVURLAsset URLAssetWithURL:url options:nil];
NSArray *tracks = [avAsset tracksWithMediaType:AVMediaTypeAudio];
if ([tracks count] == 0)
return NO;
CMTimeRange timeRangeInAsset = CMTimeRangeMake(kCMTimeZero, [avAsset duration]);
AVAssetTrack *clipAudioTrack = [[avAsset tracksWithMediaType:AVMediaTypeAudio] objectAtIndex:0];
ok = [compositionAudioTrack insertTimeRange:timeRangeInAsset ofTrack:clipAudioTrack atTime:nextClipStartTime error:&error];
if (!ok) {
NSLog(#"Current Video Track Error: %#",error);
}
nextClipStartTime = CMTimeAdd(nextClipStartTime, timeRangeInAsset.duration);
}
// create the export session
// no need for a retain here, the session will be retained by the
// completion handler since it is referenced there
AVAssetExportSession *exportSession = [AVAssetExportSession
exportSessionWithAsset:composition
presetName:AVAssetExportPresetAppleM4A];
if (nil == exportSession) return NO;
NSString *soundOneNew = [documentsDirectory stringByAppendingPathComponent:#"combined.m4a"];
//NSLog(#"Output file path - %#",soundOneNew);
// configure export session output with all our parameters
exportSession.outputURL = [NSURL fileURLWithPath:soundOneNew]; // output path
exportSession.outputFileType = AVFileTypeAppleM4A; // output file type
// perform the export
[exportSession exportAsynchronouslyWithCompletionHandler:^{
if (AVAssetExportSessionStatusCompleted == exportSession.status) {
NSLog(#"AVAssetExportSessionStatusCompleted");
} else if (AVAssetExportSessionStatusFailed == exportSession.status) {
// a failure may happen because of an event out of your control
// for example, an interruption like a phone call comming in
// make sure and handle this case appropriately
NSLog(#"AVAssetExportSessionStatusFailed");
} else {
NSLog(#"Export Session Status: %d", exportSession.status);
}
}];
return YES;
}
You can use this method to merge 3 sounds together.
- (BOOL) combineVoices1
{
NSError *error = nil;
BOOL ok = NO;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
CMTime nextClipStartTime = kCMTimeZero;
//Create AVMutableComposition Object.This object will hold our multiple AVMutableCompositionTrack.
AVMutableComposition *composition = [[AVMutableComposition alloc] init];
AVMutableCompositionTrack *compositionAudioTrack = [composition addMutableTrackWithMediaType:AVMediaTypeAudio preferredTrackID:kCMPersistentTrackID_Invalid];
[compositionAudioTrack setPreferredVolume:0.8];
NSString *soundOne =[[NSBundle mainBundle]pathForResource:#"test1" ofType:#"caf"];
NSURL *url = [NSURL fileURLWithPath:soundOne];
AVAsset *avAsset = [AVURLAsset URLAssetWithURL:url options:nil];
NSArray *tracks = [avAsset tracksWithMediaType:AVMediaTypeAudio];
AVAssetTrack *clipAudioTrack = [[avAsset tracksWithMediaType:AVMediaTypeAudio] objectAtIndex:0];
[compositionAudioTrack insertTimeRange:CMTimeRangeMake(kCMTimeZero, avAsset.duration) ofTrack:clipAudioTrack atTime:kCMTimeZero error:nil];
AVMutableCompositionTrack *compositionAudioTrack1 = [composition addMutableTrackWithMediaType:AVMediaTypeAudio preferredTrackID:kCMPersistentTrackID_Invalid];
[compositionAudioTrack setPreferredVolume:0.3];
NSString *soundOne1 =[[NSBundle mainBundle]pathForResource:#"test" ofType:#"caf"];
NSURL *url1 = [NSURL fileURLWithPath:soundOne1];
AVAsset *avAsset1 = [AVURLAsset URLAssetWithURL:url1 options:nil];
NSArray *tracks1 = [avAsset1 tracksWithMediaType:AVMediaTypeAudio];
AVAssetTrack *clipAudioTrack1 = [[avAsset1 tracksWithMediaType:AVMediaTypeAudio] objectAtIndex:0];
[compositionAudioTrack1 insertTimeRange:CMTimeRangeMake(kCMTimeZero, avAsset.duration) ofTrack:clipAudioTrack1 atTime:kCMTimeZero error:nil];
AVMutableCompositionTrack *compositionAudioTrack2 = [composition addMutableTrackWithMediaType:AVMediaTypeAudio preferredTrackID:kCMPersistentTrackID_Invalid];
[compositionAudioTrack2 setPreferredVolume:1.0];
NSString *soundOne2 =[[NSBundle mainBundle]pathForResource:#"song" ofType:#"caf"];
NSURL *url2 = [NSURL fileURLWithPath:soundOne2];
AVAsset *avAsset2 = [AVURLAsset URLAssetWithURL:url2 options:nil];
NSArray *tracks2 = [avAsset2 tracksWithMediaType:AVMediaTypeAudio];
AVAssetTrack *clipAudioTrack2 = [[avAsset2 tracksWithMediaType:AVMediaTypeAudio] objectAtIndex:0];
[compositionAudioTrack1 insertTimeRange:CMTimeRangeMake(kCMTimeZero, avAsset2.duration) ofTrack:clipAudioTrack2 atTime:kCMTimeZero error:nil];
AVAssetExportSession *exportSession = [AVAssetExportSession
exportSessionWithAsset:composition
presetName:AVAssetExportPresetAppleM4A];
if (nil == exportSession) return NO;
NSString *soundOneNew = [documentsDirectory stringByAppendingPathComponent:#"combined10.m4a"];
//NSLog(#"Output file path - %#",soundOneNew);
// configure export session output with all our parameters
exportSession.outputURL = [NSURL fileURLWithPath:soundOneNew]; // output path
exportSession.outputFileType = AVFileTypeAppleM4A; // output file type
// perform the export
[exportSession exportAsynchronouslyWithCompletionHandler:^{
if (AVAssetExportSessionStatusCompleted == exportSession.status) {
NSLog(#"AVAssetExportSessionStatusCompleted");
} else if (AVAssetExportSessionStatusFailed == exportSession.status) {
// a failure may happen because of an event out of your control
// for example, an interruption like a phone call comming in
// make sure and handle this case appropriately
NSLog(#"AVAssetExportSessionStatusFailed");
} else {
NSLog(#"Export Session Status: %d", exportSession.status);
}
}];
return YES;
}
You should probably look into this post for doing the same:
Combine two audio files into one in objective c
The answer is similar to what Dimitar has suggested. But 2 important things that you have to keep in mind are that, first - it works only for mp3 format and second the bit-rate of all the files that you are trying to concatenate should be same, or else only parts of your file would play in the final output. It would stop playing where the bit rate changes.
SSteve- Files like Wav files have their own headers and if you just write one file after another, It would play just the first file and would then stop playing, inspite that the file info showing a greater file size. this is because we do not have information updated into the header of the first file.
I have taken two diffrent mp3 files from AVMutableCompositionTrack. and these two mp3 files are stored in same AVMutableComposition.
when i will press the button the path of new mp3 will be shown by console.
-(IBAction)play
{
[self mixAudio];
}
-(void)mixAudio
{
CFAbsoluteTime currentTime=CFAbsoluteTimeGetCurrent();
AVMutableComposition *composition = [[AVMutableComposition alloc] init];
AVMutableCompositionTrack *compositionAudioTrack = [composition addMutableTrackWithMediaType:AVMediaTypeAudio preferredTrackID:kCMPersistentTrackID_Invalid];
[compositionAudioTrack setPreferredVolume:0.8];
NSString *soundOne =[[NSBundle mainBundle]pathForResource:#"KICK1" ofType:#"mp3"];
NSURL *url = [NSURL fileURLWithPath:soundOne];
AVAsset *avAsset = [AVURLAsset URLAssetWithURL:url options:nil];
NSArray *tracks = [avAsset tracksWithMediaType:AVMediaTypeAudio];
AVAssetTrack *clipAudioTrack = [tracks objectAtIndex:0];
[compositionAudioTrack insertTimeRange:CMTimeRangeMake(kCMTimeZero, avAsset.duration) ofTrack:clipAudioTrack atTime:kCMTimeZero error:nil];
AVMutableCompositionTrack *compositionAudioTrack1 = [composition addMutableTrackWithMediaType:AVMediaTypeAudio preferredTrackID:kCMPersistentTrackID_Invalid];
[compositionAudioTrack setPreferredVolume:0.8];
NSString *soundOne1 =[[NSBundle mainBundle]pathForResource:#"KICK2" ofType:#"mp3"];
NSURL *url1 = [NSURL fileURLWithPath:soundOne1];
AVAsset *avAsset1 = [AVURLAsset URLAssetWithURL:url1 options:nil];
NSArray *tracks1 = [avAsset1 tracksWithMediaType:AVMediaTypeAudio];
AVAssetTrack *clipAudioTrack1 = [tracks1 objectAtIndex:0];
[compositionAudioTrack1 insertTimeRange:CMTimeRangeMake(kCMTimeZero, avAsset1.duration) ofTrack:clipAudioTrack1 atTime: kCMTimeZero error:nil];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES);
NSString *libraryCachesDirectory = [paths objectAtIndex:0];
NSString *strOutputFilePath = [libraryCachesDirectory stringByAppendingPathComponent:#"output.mov"];
NSString *requiredOutputPath = [libraryCachesDirectory stringByAppendingPathComponent:#"output.m4a"];
NSURL *audioFileOutput = [NSURL fileURLWithPath:requiredOutputPath];
[[NSFileManager defaultManager] removeItemAtURL:audioFileOutput error:NULL];
AVAssetExportSession *exporter=[[AVAssetExportSession alloc] initWithAsset:composition presetName:AVAssetExportPresetAppleM4A];
exporter.outputURL=audioFileOutput;
exporter.outputFileType=AVFileTypeAppleM4A;
[exporter exportAsynchronouslyWithCompletionHandler:^{
NSLog(#" OUtput path is \n %#", requiredOutputPath);
NSFileManager * fm = [[NSFileManager alloc] init];
[fm moveItemAtPath:strOutputFilePath toPath:requiredOutputPath error:nil];
NSLog(#" OUtput path is \n %#", requiredOutputPath);
NSLog(#"export complete: %lf",CFAbsoluteTimeGetCurrent()-currentTime);
NSError *error;
audioPlayer=[[AVAudioPlayer alloc]initWithContentsOfURL:audioFileOutput error:&error];
audioPlayer.numberOfLoops=0;
[audioPlayer play];
}];
}
Have you tried something like this:
AudioFileCreateWithURL //to create the output file
For each input file:
AudioFileOpenURL //open file
repeat
AudioFileReadBytes //read from input file
AudioFileWriteBytes //write to output file
until eof(input file)
AudioFileClose //close input file
AudioFileClose //close output file
This would probably require that the input files are all the same format and would create the output file in that same format. If you need to convert the format, that might be better done after creating the output file.
The easiest way to implement multiple combinations of aac：
- (NSString *)concatenatedAACVoicesPath{
NSMutableData *concatenatedData = [[NSMutableData alloc] init];
NSArray *aacPathArr = [self queryAAC];
for (NSString *path in aacPathArr) {
NSData *data = [[NSData alloc] initWithContentsOfFile:path];
[concatenatedData appendData: data];
}
NSString *fileNamePath = [NSString stringWithFormat:#"%#/%#.aac",[NSString createPath:currRecordDocName],currRecordDocName];
[concatenatedData writeToFile:fileNamePath atomically:YES];
return fileNamePath;
}
I have an idea, not sure it will work. Try to get NSData from these 3 files, append the data into another NSData and then write it. Something like:
NSMutableData *concatenatedData = [NSMutableData alloc] init];
NSData *data1 = [[NSData alloc] initWithContentsOfFile:(NSString *)path];
NSData *data2 = [[NSData alloc] initWithContentsOfFile:(NSString *)path];
NSData *data3 = [[NSData alloc] initWithContentsOfFile:(NSString *)path];
[concatenatedData appendData: data1];
[concatenatedData appendData: data2];
[concatenatedData appendData: data3];
[concatenatedData writeToFile:#"/path/to/concatenatedData.mp3" atomically:YES];
It's a theory I'm not sure it will work :), it actually works if i open an mp3 with hex editor - copy everything and paste it in the end - then I have the same sound twice. Please try it and let us know if it works.