AV_CLASS_CATEGORY_BITSTREAM_FILTER   71 libavutil/log.c     [16+AV_CLASS_CATEGORY_BITSTREAM_FILTER] =  9,
AV_CLASS_CATEGORY_BITSTREAM_FILTER  102 libavutil/log.c     [16+AV_CLASS_CATEGORY_BITSTREAM_FILTER] = 192 << 8 | 0x14,