2014/10/15 下午 10:05:23

iphone Programming Glossary: compositionvideotrack

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

filePath options nil AVMutableComposition mixComposition AVMutableComposition composition AVMutableCompositionTrack compositionVideoTrack mixComposition addMutableTrackWithMediaType AVMediaTypeVideo preferredTrackID kCMPersistentTrackID_Invalid AVAssetTrack.. AVAssetTrack clipVideoTrack videoAsset tracksWithMediaType AVMediaTypeVideo objectAtIndex 0 compositionVideoTrack insertTimeRange CMTimeRangeMake kCMTimeZero videoAsset.duration ofTrack clipVideoTrack atTime kCMTimeZero error nil compositionVideoTrack.. insertTimeRange CMTimeRangeMake kCMTimeZero videoAsset.duration ofTrack clipVideoTrack atTime kCMTimeZero error nil compositionVideoTrack setPreferredTransform videoAsset tracksWithMediaType AVMediaTypeVideo objectAtIndex 0 preferredTransform CGSize videoSize..

Merging Audio with Video Objective-C

http://stackoverflow.com/questions/13909400/merging-audio-with-video-objective-c

options nil CMTimeRange video_timeRange CMTimeRangeMake kCMTimeZero videoAsset.duration AVMutableCompositionTrack a_compositionVideoTrack mixComposition addMutableTrackWithMediaType AVMediaTypeVideo preferredTrackID kCMPersistentTrackID_Invalid a_compositionVideoTrack.. mixComposition addMutableTrackWithMediaType AVMediaTypeVideo preferredTrackID kCMPersistentTrackID_Invalid a_compositionVideoTrack insertTimeRange video_timeRange ofTrack videoAsset tracksWithMediaType AVMediaTypeVideo objectAtIndex 0 atTime nextClipStartTime.. audioAsset tracksWithMediaType AVMediaTypeAudio objectAtIndex 0 atTime kCMTimeZero error nil AVMutableCompositionTrack compositionVideoTrack mixComposition addMutableTrackWithMediaType AVMediaTypeVideo preferredTrackID kCMPersistentTrackID_Invalid compositionVideoTrack..

How to use scaleTimeRange in an AVMutableComposition?

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

tracksWithMediaType AVMediaTypeAudio objectAtIndex 0 atTime kCMTimeZero error nil AVMutableCompositionTrack compositionVideoTrack mixComposition addMutableTrackWithMediaType AVMediaTypeVideo preferredTrackID kCMPersistentTrackID_Invalid compositionVideoTrack.. mixComposition addMutableTrackWithMediaType AVMediaTypeVideo preferredTrackID kCMPersistentTrackID_Invalid compositionVideoTrack insertTimeRange CMTimeRangeMake kCMTimeZero videoAsset.duration ofTrack videoAsset tracksWithMediaType AVMediaTypeVideo..

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

[NSMutableArray objectAtIndex:]: index 0 beyond bounds for empty array from AVURLAsset

http://stackoverflow.com/questions/4398764/nsmutablearray-objectatindex-index-0-beyond-bounds-for-empty-array-from-avur

options nil AVURLAsset audioAsset2 AVURLAsset alloc initWithURL audioURL1 options nil AVMutableCompositionTrack compositionVideoTrack composition addMutableTrackWithMediaType AVMediaTypeAudio preferredTrackID kCMPersistentTrackID_Invalid NSError error NULL.. addMutableTrackWithMediaType AVMediaTypeAudio preferredTrackID kCMPersistentTrackID_Invalid NSError error NULL compositionVideoTrack insertTimeRange CMTimeRangeMake kCMTimeZero videoAsset.duration ofTrack videoAsset tracksWithMediaType AVMediaTypeVideo..

AVFoundation + AssetWriter: Generate Movie With Images and Audio

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

AVAssetTrack videoAssetTrack videoAsset tracksWithMediaType AVMediaTypeVideo objectAtIndex 0 AVMutableCompositionTrack compositionVideoTrack composition addMutableTrackWithMediaType AVMediaTypeVideo preferredTrackID kCMPersistentTrackID_Invalid compositionVideoTrack.. composition addMutableTrackWithMediaType AVMediaTypeVideo preferredTrackID kCMPersistentTrackID_Invalid compositionVideoTrack insertTimeRange CMTimeRangeMake kCMTimeZero videoAsset.duration ofTrack videoAssetTrack atTime kCMTimeZero error error..

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

using the code below AVMutableComposition composition AVMutableComposition composition AVMutableCompositionTrack compositionVideoTrack composition addMutableTrackWithMediaType AVMediaTypeVideo preferredTrackID kCMPersistentTrackID_Invalid AVMutableCompositionTrack.. 0 AVAssetTrack audioTrack asset tracksWithMediaType AVMediaTypeAudio objectAtIndex 0 set the orientation if i 0 compositionVideoTrack setPreferredTransform videoTrack.preferredTransform ok compositionVideoTrack insertTimeRange CMTimeRangeMake kCMTimeZero.. 0 set the orientation if i 0 compositionVideoTrack setPreferredTransform videoTrack.preferredTransform ok compositionVideoTrack insertTimeRange CMTimeRangeMake kCMTimeZero asset duration ofTrack videoTrack atTime startTime error nil ok compositionAudioTrack..

AVPlayer with one video tracks and multiples audio tracks

http://stackoverflow.com/questions/6735979/avplayer-with-one-video-tracks-and-multiples-audio-tracks

composition AVURLAsset videoAsset AVURLAsset alloc initWithURL urlVideo options nil AVMutableCompositionTrack compositionVideoTrack composition addMutableTrackWithMediaType AVMediaTypeVideo preferredTrackID kCMPersistentTrackID_Invalid NSError error NULL.. addMutableTrackWithMediaType AVMediaTypeVideo preferredTrackID kCMPersistentTrackID_Invalid NSError error NULL compositionVideoTrack insertTimeRange CMTimeRangeMake kCMTimeZero videoAsset.duration ofTrack videoAsset tracksWithMediaType AVMediaTypeVideo..