Pixel formats, CVPixelBufferRefs and glReadPixels

Question

I\'m using glReadPixels to read data into a CVPixelBufferRef. I use the CVPixelBufferRef as the input into an AVAssetWriter

Answer 1

    glReadPixels(0, 0, width, height, GL_BGRA, GL_UNSIGNED_BYTE, _buffer);
    CVPixelBufferRef buffer = NULL;
    CVReturn ret = CVPixelBufferCreateWithBytes(kCFAllocatorDefault,_size.width,_size.height,kCVPixelFormatType_32BGRA,glubyte,_size.width*4,NULL,NULL,NULL,&buffer);