https://bugs.gentoo.org/961695
https://github.com/mpv-player/mpv/commit/26b29fba02a
--- a/demux/demux_mkv.c
+++ b/demux/demux_mkv.c
@@ -2202,3 +2202,3 @@
             if (component_tag >= 0x30 && component_tag <= 0x37)
-                lav->profile = FF_PROFILE_ARIB_PROFILE_A;
+                lav->profile = AV_PROFILE_ARIB_PROFILE_A;
             break;
@@ -2208,6 +2208,6 @@
             if (component_tag == 0x87)
-                lav->profile = FF_PROFILE_ARIB_PROFILE_C;
+                lav->profile = AV_PROFILE_ARIB_PROFILE_C;
             break;
         }
-        if (lav->profile == FF_PROFILE_UNKNOWN)
+        if (lav->profile == AV_PROFILE_UNKNOWN)
             MP_WARN(demuxer, "ARIB caption profile %02x / %04x not supported.\n",