How do i save a video (mp4 format) using AVCaptureVideoDataOutput?

问题

I have set up the input, and the output for the AVCapture session and also the delegate

- (void)captureOutput:(AVCaptureOutput *)captureOutput didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer fromConnection:(AVCaptureConnection *)connection

is getting called. How do I convert the frames to a mp4 video file and save it?

回答1:

Use an AVAssetWriter to compress the data and write to MP4. These two samples contain code that does this:

http://www.gdcl.co.uk/2013/02/20/iPhone-Pause.html

http://www.gdcl.co.uk/2013/02/20/iOS-Video-Encoding.html

G

来源：https://stackoverflow.com/questions/15478128/how-do-i-save-a-video-mp4-format-using-avcapturevideodataoutput