diff --git a/Copyright b/Copyright
index 29256724c9..33ee4fe450 100644
--- a/Copyright
+++ b/Copyright
@@ -141,7 +141,7 @@ x   audio/audio.*                   very hard (mp_audio based of anders' af_audi
     demux/demux_edl.c               LGPL
     demux/demux_lavf.c              almost LGPL
     demux/demux_libarchive.c        LGPL
-    demux/demux_mf.c                hard
+    demux/demux_mf.c                LGPLv3+
     demux/demux_mkv.c               LGPL (mostly)
     demux/demux_mkv_timeline.c      LGPL
     demux/demux_null.c              LGPL
@@ -244,7 +244,7 @@ x   player/audio.c                  LGPL (dysfunctional due to libaf)
     stream/dvb*                     must stay GPL
     stream/frequencies.*            must stay GPL
     stream/rar.*                    LGPL
-    stream/stream_avdevice.c        unknown
+    stream/stream_avdevice.c        LGPL
     stream/stream_bluray.c          unknown
     stream/stream.*                 LGPL
     stream/stream_cb.c              LGPL
@@ -258,7 +258,7 @@ x   player/audio.c                  LGPL (dysfunctional due to libaf)
     stream/stream_lavf.c            LGPL
     stream/stream_libarchive.*      LGPL
     stream/stream_memory.c          LGPL
-    stream/stream_mf.c              unknown
+    stream/stream_mf.c              LGPL
     stream/stream_null.c            LGPL
     stream/stream_rar.c             LGPL
     stream/stream_smb.c             will stay GPLv3
diff --git a/demux/demux_mf.c b/demux/demux_mf.c
index 4b09ad8e86..02b95e1c15 100644
--- a/demux/demux_mf.c
+++ b/demux/demux_mf.c
@@ -1,18 +1,24 @@
 /*
  * This file is part of mpv.
  *
- * mpv is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
+ * mpv is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
  *
  * mpv is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * GNU Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License along
- * with mpv.  If not, see <http://www.gnu.org/licenses/>.
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with mpv.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * The parts making this file LGPL v3 (instead of v2.1 or later) are:
+ *  0aa37a0db23c allow autodetection of pictures type when using mf://@fil...
+ * (iive agreed to LGPL v3+ only.)
+ * Once these changes are not relevant to for copyright anymore (e.g. because
+ * they have been removed), this file will change to LGPLv2.1+.
  */
 
 #include <stdio.h>
diff --git a/stream/stream_mf.c b/stream/stream_mf.c
index ca6ab6ae88..fbee82924a 100644
--- a/stream/stream_mf.c
+++ b/stream/stream_mf.c
@@ -6,18 +6,18 @@
  *
  * This file is part of mpv.
  *
- * mpv is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
+ * mpv is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
  *
  * mpv is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * GNU Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License along
- * with mpv.  If not, see <http://www.gnu.org/licenses/>.
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with mpv.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 #include "config.h"