* Utility function to access log2_chroma_w log2_chroma_h from
* the pixel format AVPixFmtDescriptor.
*
- * See av_get_chroma_sub_sample() for a function that asserts a
- * valid pixel format instead of returning an error code.
- * Its recommended that you use avcodec_get_chroma_sub_sample unless
- * you do check the return code!
- *
* @param[in] pix_fmt the pixel format
* @param[out] h_shift store log2_chroma_w (horizontal/width shift)
* @param[out] v_shift store log2_chroma_h (vertical/height shift)