2014/10/15 下午 10:04:09

iphone Programming Glossary: attime

Merge Two Video files in iPhone Application

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

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..

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

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

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

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

Adjusting the volume of a playing AVPlayer

http://stackoverflow.com/questions/3268949/adjusting-the-volume-of-a-playing-avplayer

audioInputParams AVMutableAudioMixInputParameters audioMixInputParameters audioInputParams setVolume volume atTime kCMTimeZero audioInputParams setTrackID track trackID allAudioParams addObject audioInputParams AVMutableAudioMix audioMix..

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

kCMTimeZero audioAsset.duration ofTrack audioAsset tracksWithMediaType AVMediaTypeAudio objectAtIndex 0 atTime kCMTimeZero error nil AVMutableCompositionTrack compositionVideoTrack mixComposition addMutableTrackWithMediaType AVMediaTypeVideo.. kCMTimeZero videoAsset.duration ofTrack videoAsset tracksWithMediaType AVMediaTypeVideo objectAtIndex 0 atTime kCMTimeZero error nil AVAssetExportSession _assetExport AVAssetExportSession alloc initWithAsset mixComposition presetName..

how to control orientation of video assembled with AVMutableComposition

http://stackoverflow.com/questions/4175060/how-to-control-orientation-of-video-assembled-with-avmutablecomposition

shrinkWidth CGAffineTransformConcat translateToCenter rotateBy90Degrees rotator setTransform finalTransform atTime kCMTimeZero instruction.layerInstructions NSArray arrayWithObject rotator videoComposition.instructions NSArray arrayWithObject..

AVFoundation + AssetWriter: Generate Movie With Images and Audio

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

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

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

insertTimeRange video_timeRange ofTrack videoAsset tracksWithMediaType AVMediaTypeVideo objectAtIndex 0 atTime nextClipStartTime error nil nextClipStartTime CMTimeAdd nextClipStartTime a_timeRange.duration AVURLAsset audioAsset AVURLAsset.. insertTimeRange audio_timeRange ofTrack audioAsset tracksWithMediaType AVMediaTypeAudio objectAtIndex 0 atTime nextClipStartTime error nil AVAssetExportSession _assetExport AVAssetExportSession alloc initWithAsset mixComposition presetName..

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

ok compositionVideoTrack insertTimeRange CMTimeRangeMake kCMTimeZero asset duration ofTrack videoTrack atTime startTime error nil ok compositionAudioTrack insertTimeRange CMTimeRangeMake kCMTimeZero asset duration ofTrack audioTrack.. 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 path of.. sourceVideoTrack.naturalSize if size.width size.height layerInstruction setTransform transform atTime CMTimeMakeWithSeconds time 30 else float s size.width size.height CGAffineTransform new CGAffineTransformConcat transform..

Combining two .caf files on iPhone

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

trackMix AVMutableAudioMixInputParameters audioMixInputParametersWithTrack track trackMix setVolume 0.8f atTime startTime audioMixParams addObject trackMix Insert audio into track ok track insertTimeRange tRange ofTrack sourceAudioTrack.. 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 the following method void..