我试图将一个音频文件与视频文件混合，但我收到了一个错误。 “导出失败：操作无法完成”
如果出现错误，请更正此代码。
我的代码：
-(void)CompileFilesToMakeMovie
{
AVMutableComposition* mixComposition = [AVMutableComposition composition];
NSString *str=[[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:@"bgsong.mp3"];
NSString* audio_inputFilePath =str;
NSURL* audio_inputFileUrl = [NSURL fileURLWithPath:audio_inputFilePath];
NSString* video_inputFileName = @"movie.mp4";
NSArray *paths = NSSearchPathForDirectoriesInDomains( NSDocumentDirectory,
NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *video_inputFilePath = [documentsDirectory stringByAppendingPathComponent:video_inputFileName];
NSURL* video_inputFileUrl = [NSURL fileURLWithPath:video_inputFilePath];
NSString* outputFileName = @"outputFile.mp4";
NSString* outputFilePath = [documentsDirectory stringByAppendingPathComponent:outputFileName];
NSURL* outputFileUrl = [NSURL fileURLWithPath:outputFilePath];
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];
//nextClipStartTime = CMTimeAdd(nextClipStartTime, a_timeRange.duration);
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 ) {
BOOL _success = false;
switch ([_assetExport status]) {
case AVAssetExportSessionStatusCompleted:
_success = true;
NSLog(@"Export Completed");
break;
case AVAssetExportSessionStatusWaiting:
NSLog(@"Export Waiting");
break;
case AVAssetExportSessionStatusExporting:
NSLog(@"Export Exporting");
break;
case AVAssetExportSessionStatusFailed:
{
NSError *error = [_assetExport error];
NSLog(@"Export failed: %@", [error localizedDescription]);
break;
}
case AVAssetExportSessionStatusCancelled:
NSLog(@"Export canceled");
break;
default:
break;
}
if (_success == true) {
ALAssetsLibrary *assetLibrary = [[ALAssetsLibrary alloc] init];
[assetLibrary writeVideoAtPathToSavedPhotosAlbum:outputFileUrl completionBlock:^(NSURL *assetURL, NSError *error){
NSError *removeError = nil;
[[NSFileManager defaultManager] removeItemAtURL:outputFileUrl error:&removeError];
}];
}
}
];
}
先谢谢
答案 0 :(得分：0)
请试试这个......
AVMutableComposition* mixComposition = [AVMutableComposition composition];
//audio File
NSMutableArray *loTempArr = [[[Database sharedDBDetails] getAllUserDetails:kaudioTable] mutableCopy];
TempFile *lotemp1 = [[TempFile alloc] init];
TempFile *loTemp2 = [[TempFile alloc] init];
loTemp2 = [mallVideoArray objectAtIndex:self.slectedVideoIndex];
for (int i = 0; i < [loTempArr count]; i++)
{
lotemp1 = [loTempArr objectAtIndex:i];
if (loTemp2.mTemp_Key == [lotemp1.mTemp_videorefID intValue])
{
//NSLog(@"%@",lotemp1.mTemp_AudioName);
NSString *filepath = [kDocument_Path stringByAppendingString:[NSString stringWithFormat:@"/audioFolder/%@",lotemp1.mTemp_AudioName]];
NSURL *SongURL = [NSURL fileURLWithPath:filepath];
self.audioAsset = [[AVURLAsset alloc] initWithURL:SongURL options:nil];
CMTime time2=CMTimeMake([lotemp1.mTemp_timeinvideo doubleValue]*600, 600);
AVMutableCompositionTrack *compositionCommentaryTrack2 = [mixComposition addMutableTrackWithMediaType:AVMediaTypeAudio preferredTrackID:kCMPersistentTrackID_Invalid];
[compositionCommentaryTrack2 insertTimeRange:CMTimeRangeMake(kCMTimeZero, CMTimeSubtract(self.videoAsset.duration, time2))
ofTrack:[[self.audioAsset tracksWithMediaType:AVMediaTypeAudio] objectAtIndex:0] atTime:time2 error:nil];
}
}
AVMutableCompositionTrack *compositionVideoTrack = [mixComposition addMutableTrackWithMediaType:AVMediaTypeVideo preferredTrackID:kCMPersistentTrackID_Invalid];
[compositionVideoTrack insertTimeRange:CMTimeRangeMake(kCMTimeZero, self.videoAsset.duration)
ofTrack:[[self.videoAsset tracksWithMediaType:AVMediaTypeVideo] objectAtIndex:0] atTime:kCMTimeZero error:nil];
// 3.1 - Create AVMutableVideoCompositionInstruction
AVMutableVideoCompositionInstruction *mainInstruction = [AVMutableVideoCompositionInstruction videoCompositionInstruction];
mainInstruction.timeRange = CMTimeRangeMake(kCMTimeZero, self.videoAsset.duration);
// 3.2 - Create an AVMutableVideoCompositionLayerInstruction for the video track and fix the orientation.
AVMutableVideoCompositionLayerInstruction *videolayerInstruction = [AVMutableVideoCompositionLayerInstruction videoCompositionLayerInstructionWithAssetTrack:compositionVideoTrack];
AVAssetTrack *videoAssetTrack = [[self.videoAsset tracksWithMediaType:AVMediaTypeVideo] objectAtIndex:0];
CGAffineTransform transform = CGAffineTransformIdentity;//
transform = videoAssetTrack.preferredTransform;
[videolayerInstruction setTransform:transform atTime:kCMTimeZero];
[videolayerInstruction setOpacity:0.0 atTime:self.videoAsset.duration];
mainInstruction.layerInstructions = [NSArray arrayWithObjects:videolayerInstruction,nil];
// 3.3 - Add instructions
AVMutableVideoComposition *mainCompositionInst = [AVMutableVideoComposition videoComposition];
float renderWidth, renderHeight;
renderWidth = self.movieController.view.frame.size.width;
renderHeight = self.movieController.view.frame.size.height;
CGSize size;
if(flipActionFlag == 4 || flipActionFlag == 5)
{
size = CGSizeMake(videoAssetTrack.naturalSize.height, videoAssetTrack.naturalSize.width);
}
else
{
size = videoAssetTrack.naturalSize;
}
//NSLog(@"%@",NSStringFromCGSize(size));
mainCompositionInst.renderSize = size;//size//CGSizeMake(renderWidth, renderHeight)
mainCompositionInst.instructions = [NSArray arrayWithObject:mainInstruction];
mainCompositionInst.frameDuration = CMTimeMake(1, 30);
// 4 - Get path
TempFile *mnewtemp = [[TempFile alloc] init];
mnewtemp.mTemp_videoName = [NSString stringWithFormat:@"Video_%d.m4v",loTemp.mTemp_Key+1];
[[Database sharedDBDetails] insertNewRowWithData:mnewtemp forTable:kvideoTable];
NSString *myPathDocs = [kDocument_Path stringByAppendingPathComponent:
[NSString stringWithFormat:@"Video/Video_%d.m4v",loTemp.mTemp_Key+1]];
NSURL *url = [NSURL fileURLWithPath:myPathDocs];
// 5 - Create exporter
AVAssetExportSession *exporter = [[AVAssetExportSession alloc] initWithAsset:mixComposition
presetName:AVAssetExportPresetHighestQuality];
exporter.outputURL=url;
exporter.outputFileType = AVFileTypeQuickTimeMovie;//@"com.apple.quicktime-movie";AVFileTypeQuickTimeMovie
exporter.shouldOptimizeForNetworkUse = YES;
exporter.videoComposition = mainCompositionInst;
[exporter exportAsynchronouslyWithCompletionHandler:^
{
int exportStatus = exporter.status;
NSLog(@"exportStatus = %d",exportStatus);
switch (exportStatus)
{
case AVAssetExportSessionStatusFailed: {NSError *exportError = exporter.error;NSLog (@"AVAssetExportSessionStatusFailed: %@", exportError);break;}
case AVAssetExportSessionStatusCompleted: { NSLog (@"AVAssetExportSessionStatusCompleted--"); break;}
case AVAssetExportSessionStatusUnknown: { NSLog (@"AVAssetExportSessionStatusUnknown"); break;}
case AVAssetExportSessionStatusExporting: { NSLog (@"AVAssetExportSessionStatusExporting"); break;}
case AVAssetExportSessionStatusCancelled: { NSLog (@"AVAssetExportSessionStatusCancelled"); break;}
case AVAssetExportSessionStatusWaiting:{NSLog (@"AVAssetExportSessionStatusWaiting"); break;}
default: { NSLog (@"didn't get export status"); break;}
}
dispatch_async(dispatch_get_main_queue(), ^
{
[self exportDidFinish:exporter];
});
}];
}}
- (void)exportDidFinish:(AVAssetExportSession*)session
{
[losaveView removeFromSuperview];
if (session.status == AVAssetExportSessionStatusCompleted)
{
NSURL *outputURL = session.outputURL;
ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];
if ([library videoAtPathIsCompatibleWithSavedPhotosAlbum:outputURL]) {
[library writeVideoAtPathToSavedPhotosAlbum:outputURL completionBlock:^(NSURL *assetURL, NSError *error){
dispatch_async(dispatch_get_main_queue(), ^{
if (error)
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Error" message:@"Video Saving Failed"
delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
[alert show];
}
else
{
self.mallVideoArray = [[[Database sharedDBDetails] getAllUserDetails:kvideoTable] mutableCopy];
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Video Saved" message:@"Saved To Photo Album"
delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
[alert show];
}
});
}];
}
}
}
答案 1 :(得分：0)
我的问题得到了解决方案。
- (IBAction)MergeAndSave:(id)sender
{
NSString *str=[[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:@"bgsong.mp3"];
NSString* audio_inputFilePath =str;
NSURL *SongURL =[NSURL fileURLWithPath:audio_inputFilePath];
audioAsset = [AVAsset assetWithURL:SongURL];
NSString* video_inputFileName = @"movie.mp4";
NSArray *paths = NSSearchPathForDirectoriesInDomains( NSDocumentDirectory,
NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *video_inputFilePath = [documentsDirectory stringByAppendingPathComponent:video_inputFileName];
NSURL* video_inputFileUrl = [NSURL fileURLWithPath:video_inputFilePath];
firstAsset = [AVAsset assetWithURL:video_inputFileUrl];
secondAsset = [AVAsset assetWithURL:video_inputFileUrl];
if(firstAsset !=nil && secondAsset!=nil){
//Create AVMutableComposition Object.This object will hold our multiple AVMutableCompositionTrack.
AVMutableComposition* mixComposition = [[AVMutableComposition alloc] init];
//VIDEO TRACK
AVMutableCompositionTrack *firstTrack = [mixComposition addMutableTrackWithMediaType:AVMediaTypeVideo preferredTrackID:kCMPersistentTrackID_Invalid];
[firstTrack insertTimeRange:CMTimeRangeMake(kCMTimeZero, firstAsset.duration) ofTrack:[[firstAsset tracksWithMediaType:AVMediaTypeVideo] objectAtIndex:0] atTime:kCMTimeZero error:nil];
AVMutableCompositionTrack *secondTrack = [mixComposition addMutableTrackWithMediaType:AVMediaTypeVideo preferredTrackID:kCMPersistentTrackID_Invalid];
[secondTrack insertTimeRange:CMTimeRangeMake(kCMTimeZero, secondAsset.duration) ofTrack:[[secondAsset tracksWithMediaType:AVMediaTypeVideo] objectAtIndex:0] atTime:firstAsset.duration error:nil];
//AUDIO TRACK
if(audioAsset!=nil){
AVMutableCompositionTrack *AudioTrack = [mixComposition addMutableTrackWithMediaType:AVMediaTypeAudio preferredTrackID:kCMPersistentTrackID_Invalid];
[AudioTrack insertTimeRange:CMTimeRangeMake(kCMTimeZero, CMTimeAdd(firstAsset.duration, secondAsset.duration)) ofTrack:[[audioAsset tracksWithMediaType:AVMediaTypeAudio] objectAtIndex:0] atTime:kCMTimeZero error:nil];
}
AVMutableVideoCompositionInstruction * MainInstruction = [AVMutableVideoCompositionInstruction videoCompositionInstruction];
MainInstruction.timeRange = CMTimeRangeMake(kCMTimeZero, CMTimeAdd(firstAsset.duration, secondAsset.duration));
//FIXING ORIENTATION//
AVMutableVideoCompositionLayerInstruction *FirstlayerInstruction = [AVMutableVideoCompositionLayerInstruction videoCompositionLayerInstructionWithAssetTrack:firstTrack];
[FirstlayerInstruction setOpacity:0.0 atTime:firstAsset.duration];
MainInstruction.layerInstructions = [NSArray arrayWithObjects:FirstlayerInstruction,nil];;
AVMutableVideoComposition *MainCompositionInst = [AVMutableVideoComposition videoComposition];
MainCompositionInst.instructions = [NSArray arrayWithObject:MainInstruction];
MainCompositionInst.frameDuration = CMTimeMake(1, 30);
MainCompositionInst.renderSize = CGSizeMake(self.view.frame.size.width, self.view.frame.size.height);
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *myPathDocs = [documentsDirectory stringByAppendingPathComponent:[NSString stringWithFormat:@"mergeVideo.mov"]];
NSURL *url = [NSURL fileURLWithPath:myPathDocs];
AVAssetExportSession *exporter = [[AVAssetExportSession alloc] initWithAsset:mixComposition presetName:AVAssetExportPresetHighestQuality];
exporter.outputURL=url;
exporter.outputFileType = AVFileTypeQuickTimeMovie;
exporter.videoComposition = MainCompositionInst;
exporter.shouldOptimizeForNetworkUse = YES;
[exporter exportAsynchronouslyWithCompletionHandler:^
{
dispatch_async(dispatch_get_main_queue(), ^{
[self playVideo];
//[self performSelector:@selector(playVideo) withObject:nil afterDelay:2.0];
// [self exportDidFinish:exporter];
});
}];
}
}
- (void)exportDidFinish:(AVAssetExportSession*)session
{
if(session.status == AVAssetExportSessionStatusCompleted){
NSURL *outputURL = session.outputURL;
ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];
if ([library videoAtPathIsCompatibleWithSavedPhotosAlbum:outputURL]) {
[library writeVideoAtPathToSavedPhotosAlbum:outputURL
completionBlock:^(NSURL *assetURL, NSError *error){
dispatch_async(dispatch_get_main_queue(), ^{
if (error) {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Error" message:@"Video Saving Failed" delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles: nil, nil];
[alert show];
}else{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Video Saved" message:@"Saved To Photo Album" delegate:self cancelButtonTitle:@"Ok" otherButtonTitles: nil];
[alert show];
}
});
}];
}
}
audioAsset = nil;
firstAsset = nil;
secondAsset = nil;
}