Databases
StackOverflow2013
Postsdbo
POAVAssetExportSession - Join 2 mp4 files in IOS
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POAVAssetExportSession - Join 2 mp4 files in IOS
    primarykey
    data
    text
    <p>I am trying to join 2 preexisting mpeg4 video's together on an ipad2 with the following code.</p> <pre><code>-(void)mergeTestVideos { //setup asset NSString *firstassetpath = [NSString stringWithFormat:@"%@mpeg4-1.mp4", NSTemporaryDirectory()]; NSString *secondassetpath = [NSString stringWithFormat:@"%@mpeg4-2.mp4", NSTemporaryDirectory()]; NSFileManager *fileManager = [NSFileManager defaultManager]; AVAsset *firstAsset = [AVAsset assetWithURL:[NSURL fileURLWithPath:firstassetpath]]; AVAsset *secondAsset = [AVAsset assetWithURL:[NSURL fileURLWithPath:secondassetpath]]; NSLog(@"FirstAsset Is Readable = %d", firstAsset.isReadable); NSLog(@"FirstAsset Is playable = %d", firstAsset.isPlayable); NSLog(@"FirstAsset Is exportable = %d", firstAsset.exportable); NSLog(@"SecondAsset Is Readable = %d", secondAsset.isReadable); NSLog(@"SecondAsset Is playable = %d", secondAsset.isPlayable); NSLog(@"SecondAsset Is exportable = %d", secondAsset.exportable); //setup composition and track AVMutableComposition *composition = [[AVMutableComposition alloc]init]; AVMutableCompositionTrack *track = [composition addMutableTrackWithMediaType:AVAssetExportPresetPassthrough preferredTrackID:kCMPersistentTrackID_Invalid]; //add assets to track [track insertTimeRange:CMTimeRangeMake(kCMTimeZero, firstAsset.duration) ofTrack:[[firstAsset tracksWithMediaType:AVMediaTypeVideo]objectAtIndex:0] atTime:kCMTimeZero error:nil]; [track insertTimeRange:CMTimeRangeMake(kCMTimeZero, secondAsset.duration) ofTrack:[[secondAsset tracksWithMediaType:AVMediaTypeVideo]objectAtIndex:0] atTime:firstAsset.duration error:nil]; // 5 - Create exporter AVAssetExportSession *exporter = [[AVAssetExportSession alloc]initWithAsset:composition presetName:AVAssetExportPresetPassthrough]; NSString *outputURL = [NSString stringWithFormat:@"%@mergedvid.mp4", NSTemporaryDirectory()]; NSLog(@"%@", exporter.supportedFileTypes); exporter.outputURL=[NSURL fileURLWithPath:outputURL]; exporter.outputFileType = AVFileTypeMPEG4; [exporter exportAsynchronouslyWithCompletionHandler:^{ dispatch_async(dispatch_get_main_queue(), ^{ [self exportDidFinish:exporter]; }); }]; } -(void)exportDidFinish:(AVAssetExportSession*)session { NSLog(@"export method"); NSLog(@"%i", session.status); NSLog(@"%@", session.error); } </code></pre> <p>and output is as follows:</p> <pre><code>- FirstAsset Is Readable = 1 - FirstAsset Is playable = 1 - FirstAsset Is exportable = 1 - SecondAsset Is Readable = 1 - SecondAsset Is playable = 1 - SecondAsset Is exportable = 1 - ( "com.apple.quicktime-movie", "com.apple.m4a-audio", "public.mpeg-4", "com.apple.m4v-video", "public.3gpp", "org.3gpp.adaptive-multi-rate-audio", "com.microsoft.waveform-audio", "public.aiff-audio", "public.aifc-audio", "com.apple.coreaudio-format" ) -export method - 4 - Error Domain=AVFoundationErrorDomain Code=-11838 "Operation Stopped" UserInfo=0x155f76f0 {NSLocalizedDescription=Operation Stopped, NSLocalizedFailureReason=The operation is not supported for this media.} </code></pre> <p>Ok so according to the output my files are ok and exportable and mp4 is a supported output type.</p> <p>Does anybody have any idea why it is giving me the error 'The operation is not supported for this media'</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USJamesla
    1. USJamesla
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POAVAssetExportSession - Join 2 mp4 files in IOS
      1. USJamesla
      1. VTBountyStart
    1. This table or related slice is empty.
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload