para - Conversión de video de MOV a Mp4 mediante programación mediante iPhone

convertir videos de iphone a mp4

Question

Estoy desarrollando un servidor de medios para Play Station 3 en iPhone.

Llegué a saber que PS3 no admite archivos .MOV, así que tengo que convertirlo en Mp4 o en otra transcodificación que sea compatible con PS3.

Esto es lo que he hecho pero se bloquea si configuro un tipo de archivo diferente al de los archivos de origen.

 AVURLAsset *avAsset = [AVURLAsset URLAssetWithURL:videoURL options:nil];
NSArray *compatiblePresets = [AVAssetExportSession exportPresetsCompatibleWithAsset:avAsset];
if ([compatiblePresets containsObject:AVAssetExportPresetLowQuality])
{
AVAssetExportSession *exportSession = [[AVAssetExportSession alloc]initWithAsset:avAsset presetName:AVAssetExportPresetLowQuality];
exportSession.outputURL = [NSURL fileURLWithPath:videoPath];
exportSession.outputFileType = AVFileTypeMPEG4;
CMTime start = CMTimeMakeWithSeconds(1.0, 600);
CMTime duration = CMTimeMakeWithSeconds(3.0, 600);
CMTimeRange range = CMTimeRangeMake(start, duration);
exportSession.timeRange = range;
[exportSession exportAsynchronouslyWithCompletionHandler:^{
switch ([exportSession status]) {
case AVAssetExportSessionStatusFailed:
NSLog(@"Export failed: %@", [[exportSession error] localizedDescription]);
break;
case AVAssetExportSessionStatusCancelled:
NSLog(@"Export canceled");
break;
default:
break;
}
[exportSession release];
}];
}

Si configuro AVFileTypeMPEG4 aquí, se bloquea y dice "Tipo de archivo no válido". Así que tengo que configurarlo en AVFileTypeQuickTimeMovie y da el archivo MOV.

¿Es posible en iOS convertir videos de MOV a Mp4 a través de AVAssetExportSession ... O sin bibliotecas de terceros?

Answer 1

Aquí está el código

 func encodeVideo(videoURL: NSURL) {
let avAsset = AVURLAsset(URL: videoURL, options: nil)
var startDate = NSDate()
//Create Export session
exportSession = AVAssetExportSession(asset: avAsset, presetName: AVAssetExportPresetPassthrough)
// exportSession = AVAssetExportSession(asset: composition, presetName: mp4Quality)
//Creating temp path to save the converted video
let documentsDirectory = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0]
let myDocumentPath = NSURL(fileURLWithPath: documentsDirectory).URLByAppendingPathComponent("temp.mp4").absoluteString
let url = NSURL(fileURLWithPath: myDocumentPath)
let documentsDirectory2 = NSFileManager.defaultManager().URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask)[0] as NSURL
let filePath = documentsDirectory2.URLByAppendingPathComponent("rendered-Video.mp4")
deleteFile(filePath)
//Check if the file already exists then remove the previous file
if NSFileManager.defaultManager().fileExistsAtPath(myDocumentPath) {
do {
try NSFileManager.defaultManager().removeItemAtPath(myDocumentPath)
}
catch let error {
print(error)
}
}
url
exportSession!.outputURL = filePath
exportSession!.outputFileType = AVFileTypeMPEG4
exportSession!.shouldOptimizeForNetworkUse = true
var start = CMTimeMakeWithSeconds(0.0, 0)
var range = CMTimeRangeMake(start, avAsset.duration)
exportSession.timeRange = range
exportSession!.exportAsynchronouslyWithCompletionHandler({() -> Void in
switch self.exportSession!.status {
case .Failed:
print("%@",self.exportSession?.error)
case .Cancelled:
print("Export canceled")
case .Completed:
//Video conversion finished
var endDate = NSDate()
var time = endDate.timeIntervalSinceDate(startDate)
print(time)
print("Successful!")
print(self.exportSession.outputURL)
default:
break
}
})
}
func deleteFile(filePath:NSURL) {
guard NSFileManager.defaultManager().fileExistsAtPath(filePath.path!) else {
return
}
do {
try NSFileManager.defaultManager().removeItemAtPath(filePath.path!)
}catch{
fatalError("Unable to delete file: /(error) : /(__FUNCTION__).")
}
}

Answer 2

MOV es muy similar a MP4, es posible que solo puedas cambiar la extensión y hacer que funcione. Windows Phone no puede reproducir .MOVS pero puede reproducir mp4. Todo lo que hice para que eso funcione es cambiar la extensión de .mov a .mp4 y funciona bien, y esto es de videos grabados en el iPhone ... y si hay algo que pueda intentar exportar con AVAssetExporter y probar, hay un tipo de archivo allí para MP4 y M4A, como puede ver en las UTIs de formato de archivo here

Espero eso ayude

Answer 3

Necesitas AVMutableComposition para hacer esto. Porque Asset no se puede transcodificar a MP4 directamente en iOS 5.0.

- (BOOL)encodeVideo:(NSURL *)videoURL
{
AVURLAsset *asset = [[AVURLAsset alloc] initWithURL:videoURL options:nil];
// Create the composition and tracks
AVMutableComposition *composition = [AVMutableComposition composition];
AVMutableCompositionTrack *videoTrack = [composition addMutableTrackWithMediaType:AVMediaTypeVideo preferredTrackID:kCMPersistentTrackID_Invalid];
AVMutableCompositionTrack *audioTrack = [composition addMutableTrackWithMediaType:AVMediaTypeAudio preferredTrackID:kCMPersistentTrackID_Invalid];
NSArray *assetVideoTracks = [asset tracksWithMediaType:AVMediaTypeVideo];
if (assetVideoTracks.count <= 0)
{
NSLog(@"Error reading the transformed video track");
return NO;
}
// Insert the tracks in the composition''s tracks
AVAssetTrack *assetVideoTrack = [assetVideoTracks firstObject];
[videoTrack insertTimeRange:assetVideoTrack.timeRange ofTrack:assetVideoTrack atTime:CMTimeMake(0, 1) error:nil];
[videoTrack setPreferredTransform:assetVideoTrack.preferredTransform];
AVAssetTrack *assetAudioTrack = [[asset tracksWithMediaType:AVMediaTypeAudio] objectAtIndex:0];
[audioTrack insertTimeRange:assetAudioTrack.timeRange ofTrack:assetAudioTrack atTime:CMTimeMake(0, 1) error:nil];
// Export to mp4
NSString *mp4Quality = [MGPublic isIOSAbove:@"6.0"] ? AVAssetExportPresetMediumQuality : AVAssetExportPresetPassthrough;
NSString *exportPath = [NSString stringWithFormat:@"%@/%@.mp4",
[NSHomeDirectory() stringByAppendingString:@"/tmp"],
[BSCommon uuidString]];
NSURL *exportUrl = [NSURL fileURLWithPath:exportPath];
AVAssetExportSession *exportSession = [[AVAssetExportSession alloc] initWithAsset:composition presetName:mp4Quality];
exportSession.outputURL = exportUrl;
CMTime start = CMTimeMakeWithSeconds(0.0, 0);
CMTimeRange range = CMTimeRangeMake(start, [asset duration]);
exportSession.timeRange = range;
exportSession.outputFileType = AVFileTypeMPEG4;
[exportSession exportAsynchronouslyWithCompletionHandler:^{
switch ([exportSession status])
{
case AVAssetExportSessionStatusCompleted:
NSLog(@"MP4 Successful!");
break;
case AVAssetExportSessionStatusFailed:
NSLog(@"Export failed: %@", [[exportSession error] localizedDescription]);
break;
case AVAssetExportSessionStatusCancelled:
NSLog(@"Export canceled");
break;
default:
break;
}
}];
return YES;
}

Answer 4

Puede convertir vídeo en mp4 por AVAssets.

AVURLAsset *avAsset = [AVURLAsset URLAssetWithURL:videoURL options:nil];
NSArray *compatiblePresets = [AVAssetExportSession
exportPresetsCompatibleWithAsset:avAsset];
AVAssetExportSession *exportSession = [[AVAssetExportSession alloc]initWithAsset:avAsset presetName:AVAssetExportPresetLowQuality];
NSString* documentsDirectory=[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
exportSession.outputURL = url;
//set the output file format if you want to make it in other file format (ex .3gp)
exportSession.outputFileType = AVFileTypeMPEG4;
exportSession.shouldOptimizeForNetworkUse = YES;
[exportSession exportAsynchronouslyWithCompletionHandler:^{
switch ([exportSession status])
{
case AVAssetExportSessionStatusFailed:
NSLog(@"Export session failed");
break;
case AVAssetExportSessionStatusCancelled:
NSLog(@"Export canceled");
break;
case AVAssetExportSessionStatusCompleted:
{
//Video conversion finished
NSLog(@"Successful!");
}
break;
default:
break;
}
}];

Para convertir fácilmente el video a mp4 usa este link .

También puede encontrar un proyecto de ejemplo para convertir video a mp4.

Answer 5

Sólo quería decir que la URL no puede ser como

[NSURL URLWithString: [@"~/Documents/movie.mov" stringByExpandingTildeInPath]]

Debe ser como

[NSURL fileURLWithPath: [@"~/Documents/movie.mov" stringByExpandingTildeInPath]]

Me tomó un tiempo para darse cuenta de que :-)

Answer 6

Usa el siguiente código

 NSURL * mediaURL = [info objectForKey:UIImagePickerControllerMediaURL];
AVAsset *video = [AVAsset assetWithURL:mediaURL];
AVAssetExportSession *exportSession = [AVAssetExportSession exportSessionWithAsset:video presetName:AVAssetExportPresetMediumQuality];
exportSession.shouldOptimizeForNetworkUse = YES;
exportSession.outputFileType = AVFileTypeMPEG4;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *basePath = ([paths count] > 0) ? [paths objectAtIndex:0] : nil;
basePath = [basePath stringByAppendingPathComponent:@"videos"];
if (![[NSFileManager defaultManager] fileExistsAtPath:basePath])
[[NSFileManager defaultManager] createDirectoryAtPath:basePath withIntermediateDirectories:YES attributes:nil error:nil];
compressedVideoUrl=nil;
compressedVideoUrl = [NSURL fileURLWithPath:basePath];
long CurrentTime = [[NSDate date] timeIntervalSince1970];
NSString *strImageName = [NSString stringWithFormat:@"%ld",CurrentTime];
compressedVideoUrl=[compressedVideoUrl URLByAppendingPathComponent:[NSString stringWithFormat:@"%@.mp4",strImageName]];
exportSession.outputURL = compressedVideoUrl;
[exportSession exportAsynchronouslyWithCompletionHandler:^{
NSLog(@"done processing video!");
NSLog(@"%@",compressedVideoUrl);
if(!dataMovie)
dataMovie = [[NSMutableData alloc] init];
dataMovie = [NSData dataWithContentsOfURL:compressedVideoUrl];
}];

Answer 7

presetName usa "AVAssetExportPresetPassthrough" en lugar de "AVAssetExportPresetLowQuality"

 AVAssetExportSession *exportSession = [[AVAssetExportSession alloc]initWithAsset:avAsset presetName:AVAssetExportPresetPassthrough];