如何從avfoundation攝像頭獲得視頻輸出

Question

在這裏，我正在嘗試錄製視頻和處理輸出緩衝區，我使用avfoundation攝像機來記錄視頻和採集緩衝區委託方法的輸出，並在圖像視圖中顯示輸出。找到但如何從這裏保存視頻的東西可以任何人請幫助我。

- (void)captureOutput:(AVCaptureOutput *)captureOutput didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer fromConnection:(AVCaptureConnection *)connection;{ 
    UIImage *image = [self imageFromSampleBuffer:sampleBuffer]; 
    UIImage *fImage = [self addText:image text:@"u r text here"];//image will be processed here 
    self.dispFrames.image = fImage; 

    } 

Answer 1

您必須設置音頻/視頻輸入AVAssetWriter並附加您的示例緩衝區。您可以結帳此示例代碼，RosyWriterVideoProcessor類 https://developer.apple.com/library/ios/samplecode/RosyWriter/Listings/Classes_RosyWriterVideoProcessor_m.html#//apple_ref/doc/uid/DTS40011110-Classes_RosyWriterVideoProcessor_m-DontLinkElementID_8