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2014/10/15 ¤U¤È 10:04:15

iphone Programming Glossary: audiotrack

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

addMutableTrackWithMediaType AVMediaTypeVideo preferredTrackID kCMPersistentTrackID_Invalid AVMutableCompositionTrack audioTrack composition addMutableTrackWithMediaType AVMediaTypeAudio preferredTrackID kCMPersistentTrackID_Invalid Add your medias.. 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..

Hardware accelerated h.264 decoding to texture, overlay or similar in iOS

http://stackoverflow.com/questions/10646657/hardware-accelerated-h-264-decoding-to-texture-overlay-or-similar-in-ios

AVMediaTypeVideo objectAtIndex 0 outputSettings outputSettings reader addOutput readerVideoTrackOutput NSArray audioTracks inputAsset tracksWithMediaType AVMediaTypeAudio BOOL shouldRecordAudioTrack audioTracks count 0 self.audioEncodingTarget.. readerVideoTrackOutput NSArray audioTracks inputAsset tracksWithMediaType AVMediaTypeAudio BOOL shouldRecordAudioTrack audioTracks count 0 self.audioEncodingTarget nil AVAssetReaderTrackOutput readerAudioTrackOutput nil if shouldRecordAudioTrack audioEncodingIsFinished.. NO This might need to be extended to handle movies with more than one audio track AVAssetTrack audioTrack audioTracks objectAtIndex 0 readerAudioTrackOutput AVAssetReaderTrackOutput assetReaderTrackOutputWithTrack audioTrack outputSettings..

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

videoWriterInput sourcePixelBufferAttributes nil AVAssetTrack audioTrack asset.tracks objectAtIndex 0 AVAssetReaderOutput readerOutput AVAssetReaderTrackOutput assetReaderTrackOutputWithTrack audioTrack.. asset.tracks objectAtIndex 0 AVAssetReaderOutput readerOutput AVAssetReaderTrackOutput assetReaderTrackOutputWithTrack audioTrack outputSettings nil audioReader addOutput readerOutput NSParameterAssert videoWriterInput NSParameterAssert audioWriterInput..

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

nil url release AVAssetTrack videoTrack asset tracksWithMediaType AVMediaTypeVideo objectAtIndex 0 AVAssetTrack audioTrack asset tracksWithMediaType AVMediaTypeAudio objectAtIndex 0 set the orientation if i 0 compositionVideoTrack setPreferredTransform.. 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..

Video Encoding using AVAssetWriter - CRASHES

http://stackoverflow.com/questions/8191840/video-encoding-using-avassetwriter-crashes

nil retain AVAssetReader audioReader AVAssetReader assetReaderWithAsset avAsset error error retain AVAssetTrack audioTrack avAsset tracksWithMediaType AVMediaTypeAudio objectAtIndex 0 AVAssetReaderOutput readerOutput AVAssetReaderTrackOutput assetReaderTrackOutputWithTrack.. objectAtIndex 0 AVAssetReaderOutput readerOutput AVAssetReaderTrackOutput assetReaderTrackOutputWithTrack audioTrack outputSettings nil audioReader addOutput readerOutput NSParameterAssert audioWriterInput NSParameterAssert videoWriter canAddInput..