2014/10/15 下午 10:12:20

iphone Programming Glossary: oftrack

how to export video asset via AVAssetExportSession in portrait mode

http://stackoverflow.com/questions/10034337/how-to-export-video-asset-via-avassetexportsession-in-portrait-mode

Add your medias tracks to your composition's tracks ... BOOL videoResult videoTrack insertTimeRange sourceCMTime ofTrack tracks objectAtIndex 0 atTime currentTime error error BOOL audioResult audioTrack insertTimeRange sourceCMTime ofTrack.. tracks objectAtIndex 0 atTime currentTime error error BOOL audioResult audioTrack insertTimeRange sourceCMTime ofTrack tracks objectAtIndex 0 atTime currentTime error error ... After you added all your tracks apply your transform to the..

Merge Two Video files in iPhone Application

http://stackoverflow.com/questions/10071029/merge-two-video-files-in-iphone-application

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..

How can I add overlay text on a video, then re-encode it?

http://stackoverflow.com/questions/10190333/how-can-i-add-overlay-text-on-a-video-then-re-encode-it

AVMediaTypeVideo objectAtIndex 0 compositionVideoTrack insertTimeRange CMTimeRangeMake kCMTimeZero videoAsset.duration ofTrack clipVideoTrack atTime kCMTimeZero error nil compositionVideoTrack setPreferredTransform videoAsset tracksWithMediaType AVMediaTypeVideo..

How can I overlap audio files and combine for iPhone in Xcode?

http://stackoverflow.com/questions/12628554/how-can-i-overlap-audio-files-and-combine-for-iphone-in-xcode

0.8f atTime startTime self.audioMixParams addObject trackMix Insert audio into track ok track insertTimeRange tRange ofTrack sourceAudioTrack atTime CMTimeMake 0 44100 error error IBAction saveRecording AVMutableComposition composition AVMutableComposition..

How to use scaleTimeRange in an AVMutableComposition?

http://stackoverflow.com/questions/17450864/how-to-use-scaletimerange-in-an-avmutablecomposition

compositionCommentaryTrack insertTimeRange CMTimeRangeMake kCMTimeZero videoAsset.duration ofTrack audioAsset tracksWithMediaType AVMediaTypeAudio objectAtIndex 0 atTime kCMTimeZero error nil AVMutableCompositionTrack.. kCMPersistentTrackID_Invalid compositionVideoTrack insertTimeRange CMTimeRangeMake kCMTimeZero videoAsset.duration ofTrack videoAsset tracksWithMediaType AVMediaTypeVideo objectAtIndex 0 atTime kCMTimeZero error nil AVAssetExportSession _assetExport..

How to add audio to video file on iphone SDK

http://stackoverflow.com/questions/3440266/how-to-add-audio-to-video-file-on-iphone-sdk

compositionCommentaryTrack insertTimeRange CMTimeRangeMake kCMTimeZero audioAsset.duration ofTrack audioAsset tracksWithMediaType AVMediaTypeAudio objectAtIndex 0 atTime kCMTimeZero error nil AVMutableCompositionTrack.. kCMPersistentTrackID_Invalid compositionVideoTrack insertTimeRange CMTimeRangeMake kCMTimeZero videoAsset.duration ofTrack videoAsset tracksWithMediaType AVMediaTypeVideo objectAtIndex 0 atTime kCMTimeZero error nil AVAssetExportSession _assetExport..

How to append two audio files?

http://stackoverflow.com/questions/4191569/how-to-append-two-audio-files

kCMPersistentTrackID_Invalid audioTrack1 insertTimeRange CMTimeRangeMake kCMTimeZero audioAsset1.duration ofTrack audioAsset1 tracksWithMediaType AVMediaTypeAudio objectAtIndex 0 atTime kCMTimeZero error &error audioTrack1 insertTimeRange.. 0 atTime kCMTimeZero error &error audioTrack1 insertTimeRange CMTimeRangeMake kCMTimeZero audioAsset2.duration ofTrack audioAsset2 tracksWithMediaType AVMediaTypeAudio objectAtIndex 0 atTime audioAsset1.duration error &error Finally we have..

AVFoundation + AssetWriter: Generate Movie With Images and Audio

http://stackoverflow.com/questions/5640657/avfoundation-assetwriter-generate-movie-with-images-and-audio

kCMPersistentTrackID_Invalid compositionVideoTrack insertTimeRange CMTimeRangeMake kCMTimeZero videoAsset.duration ofTrack videoAssetTrack atTime kCMTimeZero error error CMTime audioStartTime kCMTimeZero for NSDictionary audioInfo in audioInfoArray.. kCMPersistentTrackID_Invalid compositionAudioTrack insertTimeRange CMTimeRangeMake kCMTimeZero urlAsset.duration ofTrack audioAssetTrack atTime audioStartTime error error audioStartTime CMTimeAdd audioStartTime CMTimeMake int audioInfo objectForKey..

Make movie file with picture Array and song file, using AVAsset

http://stackoverflow.com/questions/6061092/make-movie-file-with-picture-array-and-song-file-using-avasset

AVMediaTypeVideo preferredTrackID kCMPersistentTrackID_Invalid a_compositionVideoTrack insertTimeRange video_timeRange ofTrack videoAsset tracksWithMediaType AVMediaTypeVideo objectAtIndex 0 atTime nextClipStartTime error nil nextClipStartTime CMTimeAdd.. AVMediaTypeAudio preferredTrackID kCMPersistentTrackID_Invalid b_compositionAudioTrack insertTimeRange audio_timeRange ofTrack audioAsset tracksWithMediaType AVMediaTypeAudio objectAtIndex 0 atTime nextClipStartTime error nil AVAssetExportSession..

How to combine video clips with different orientation using AVFoundation

http://stackoverflow.com/questions/6575128/how-to-combine-video-clips-with-different-orientation-using-avfoundation

videoTrack.preferredTransform ok compositionVideoTrack insertTimeRange CMTimeRangeMake kCMTimeZero asset duration ofTrack videoTrack atTime startTime error nil ok compositionAudioTrack insertTimeRange CMTimeRangeMake kCMTimeZero asset duration.. atTime startTime error nil ok compositionAudioTrack insertTimeRange CMTimeRangeMake kCMTimeZero asset duration ofTrack audioTrack atTime startTime error nil startTime CMTimeAdd startTime asset duration export the combined video NSString combinedPath.. newer atTime CMTimeMakeWithSeconds time 30 ok compositionVideoTrack insertTimeRange sourceVideoTrack.timeRange ofTrack sourceVideoTrack atTime composition duration error error if ok Deal with the error. NSLog @ something went wrong NSLog..

Combining two .caf files on iPhone

http://stackoverflow.com/questions/7656512/combining-two-caf-files-on-iphone

0.8f atTime startTime audioMixParams addObject trackMix Insert audio into track ok track insertTimeRange tRange ofTrack sourceAudioTrack atTime CMTimeMake 0 44100 error error The above method gets called twice once for each audio track from..