AV_CLASS_CATEGORY_SWRESAMPLER 73 libavutil/log.c [16+AV_CLASS_CATEGORY_SWRESAMPLER ] = 7, AV_CLASS_CATEGORY_SWRESAMPLER 104 libavutil/log.c [16+AV_CLASS_CATEGORY_SWRESAMPLER ] = 147 << 8 | 0x14, AV_CLASS_CATEGORY_SWRESAMPLER 140 libswresample/options.c .category = AV_CLASS_CATEGORY_SWRESAMPLER,