struct MJpegContext *mjpeg_ctx;
int mjpeg_vsample[3]; ///< vertical sampling factors, default = {2, 1, 1}
int mjpeg_hsample[3]; ///< horizontal sampling factors, default = {2, 1, 1}
struct MJpegContext *mjpeg_ctx;
int mjpeg_vsample[3]; ///< vertical sampling factors, default = {2, 1, 1}
int mjpeg_hsample[3]; ///< horizontal sampling factors, default = {2, 1, 1}