2014/10/15 下午 10:05:09

iphone Programming Glossary: cmtimemakewithseconds

Merge Two Video files in iPhone Application

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

fileURLWithPath filePath exportSession.outputFileType AVFileTypeQuickTimeMovie CMTimeRange range if i 0 CMTime start CMTimeMakeWithSeconds 0.0 600 CMTime duration CMTimeMakeWithSeconds 10.0 600 range CMTimeRangeMake start duration else CMTime start CMTimeMakeWithSeconds.. AVFileTypeQuickTimeMovie CMTimeRange range if i 0 CMTime start CMTimeMakeWithSeconds 0.0 600 CMTime duration CMTimeMakeWithSeconds 10.0 600 range CMTimeRangeMake start duration else CMTime start CMTimeMakeWithSeconds 10.0 600 range CMTimeRangeMake start.. 0.0 600 CMTime duration CMTimeMakeWithSeconds 10.0 600 range CMTimeRangeMake start duration else CMTime start CMTimeMakeWithSeconds 10.0 600 range CMTimeRangeMake start anAsset.duration exportSession.timeRange range exportSession exportAsynchronouslyWithCompletionHandler..

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

songAsset tracksWithMediaType AVMediaTypeAudio objectAtIndex 0 NSError error nil BOOL ok NO CMTime startTime CMTimeMakeWithSeconds 0 1 CMTime trackDuration songAsset.duration CMTime longestTime CMTimeMake 848896 44100 19.24 seconds CMTimeRange tRange..

Getting thumbnail from a video url or data in IPhone SDK

http://stackoverflow.com/questions/1347562/getting-thumbnail-from-a-video-url-or-data-in-iphone-sdk

alloc initWithAsset asset generator.appliesPreferredTrackTransform TRUE asset release CMTime thumbTime CMTimeMakeWithSeconds 0 30 AVAssetImageGeneratorCompletionHandler handler ^ CMTime requestedTime CGImageRef im CMTime actualTime AVAssetImageGeneratorResult..

how to control orientation of video assembled with AVMutableComposition

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

AVMutableVideoCompositionInstruction videoCompositionInstruction instruction.timeRange CMTimeRangeMake kCMTimeZero CMTimeMakeWithSeconds 60 30 AVMutableVideoCompositionLayerInstruction rotator AVMutableVideoCompositionLayerInstruction videoCompositionLayerInstructionWithAssetTrack..

AVAssetWritter does not work with audio

http://stackoverflow.com/questions/5200077/avassetwritter-does-not-work-with-audio

recording NO writer_input markAsFinished audio_writer_input markAsFinished video_writer endSessionAtSourceTime CMTimeMakeWithSeconds NSDate date timeIntervalSinceDate start_time 30 video_writer finishWriting UISaveVideoAtPathToSavedPhotosAlbum temp_url.. AVCaptureConnection conenction if normal_delegate recording CMSampleBufferSetOutputPresentationTimeStamp sampleBuffer CMTimeMakeWithSeconds NSDate date timeIntervalSinceDate normal_delegate start_time 30 normal_delegate audio_writer_input appendSampleBuffer sampleBuffer.. out these lines writer_input markAsFinished audio_writer_input markAsFinished video_writer endSessionAtSourceTime CMTimeMakeWithSeconds NSDate date timeIntervalSinceDate start_time 30 Edit I don't know if the way you are setting the presentation time stamp..

Get the screenshot of a streaming video on iphone

http://stackoverflow.com/questions/5388226/get-the-screenshot-of-a-streaming-video-on-iphone

AVPlayer Video SeekToTime

http://stackoverflow.com/questions/6329706/avplayer-video-seektotime

for moving forward and backward using buttons. IBAction MoveForward int value timeSlider.value 36000 10 CMTime newTime CMTimeMakeWithSeconds value playspeed CMTime newTime CMTimeMake value playspeed timeSlider.maximumValue CMTime newTime CMTimeMakeWithSeconds timeSlider.value.. CMTimeMakeWithSeconds value playspeed CMTime newTime CMTimeMake value playspeed timeSlider.maximumValue CMTime newTime CMTimeMakeWithSeconds timeSlider.value playspeed newTime.value 60 player seekToTime newTime IBAction MoveBackward CMTime newTime CMTimeMakeWithSeconds.. timeSlider.value playspeed newTime.value 60 player seekToTime newTime IBAction MoveBackward CMTime newTime CMTimeMakeWithSeconds timeSlider.value 1 playspeed player seekToTime newTime My Problem on this is the time to Seek is not working properly. That..

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

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 CGAffineTransformMakeScale.. newer CGAffineTransformConcat new CGAffineTransformMakeTranslation x 0 layerInstruction setTransform newer atTime CMTimeMakeWithSeconds time 30 ok compositionVideoTrack insertTimeRange sourceVideoTrack.timeRange ofTrack sourceVideoTrack atTime composition..

Combining two .caf files on iPhone

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

MOV to Mp4 video conversion iPhone Programmatically

http://stackoverflow.com/questions/8474517/mov-to-mp4-video-conversion-iphone-programmatically

exportSession.outputURL NSURL fileURLWithPath videoPath exportSession.outputFileType AVFileTypeMPEG4 CMTime start CMTimeMakeWithSeconds 1.0 600 CMTime duration CMTimeMakeWithSeconds 3.0 600 CMTimeRange range CMTimeRangeMake start duration exportSession.timeRange.. videoPath exportSession.outputFileType AVFileTypeMPEG4 CMTime start CMTimeMakeWithSeconds 1.0 600 CMTime duration CMTimeMakeWithSeconds 3.0 600 CMTimeRange range CMTimeRangeMake start duration exportSession.timeRange range exportSession exportAsynchronouslyWithCompletionHandler..

Faster alternative to glReadPixels in iPhone OpenGL ES 2.0

http://stackoverflow.com/questions/9550297/faster-alternative-to-glreadpixels-in-iphone-opengl-es-2-0

pixel_buffer 0 and then simply feed it into my asset writer to be encoded CMTime currentTime CMTimeMakeWithSeconds NSDate date timeIntervalSinceDate startTime 120 if assetWriterPixelBufferInput appendPixelBuffer pixel_buffer withPresentationTime..

Record the drawing as a m4v video file - OpenGL

http://stackoverflow.com/questions/9661259/record-the-drawing-as-a-m4v-video-file-opengl

because if two consecutive times with the same value are added to the movie it aborts recording CMTime currentTime CMTimeMakeWithSeconds NSDate date timeIntervalSinceDate startTime 120 if assetWriterPixelBufferInput appendPixelBuffer pixel_buffer withPresentationTime..