frame_stride
pix->bytesperline = frame_stride(frameinfo->aligned_width,
pix->bytesperline = frame_stride(pix->width, pixelformat);
pix->bytesperline = frame_stride(pix->width, pix->pixelformat);
f->fmt.pix.bytesperline = frame_stride(frameinfo->aligned_width,
pix->bytesperline = frame_stride(width, pixelformat);