diff --git a/demux/demux_mkv.c b/demux/demux_mkv.c
index 600ecdf5a6..90c027188f 100644
--- a/demux/demux_mkv.c
+++ b/demux/demux_mkv.c
@@ -1462,12 +1462,8 @@ static int demux_mkv_open_video(demuxer_t *demuxer, mkv_track_t *track)
     }
 
     const char *codec = sh_v->codec ? sh_v->codec : "";
-    if (!strcmp(codec, "vp9")) {
-        track->parse = true;
-        track->parse_timebase = 1e9;
-    } else if (!strcmp(codec, "mjpeg")) {
+    if (!strcmp(codec, "mjpeg"))
         sh_v->codec_tag = MKTAG('m', 'j', 'p', 'g');
-    }
 
     if (extradata_size > 0x1000000) {
         MP_WARN(demuxer, "Invalid CodecPrivate\n");
diff --git a/wscript b/wscript
index 002c0a579f..cbff083f59 100644
--- a/wscript
+++ b/wscript
@@ -426,7 +426,7 @@ iconv support use --disable-iconv.",
 
 ffmpeg_pkg_config_checks = [
     'libavutil',     '>= 56.0.100',
-    'libavcodec',    '>= 58.2.100',
+    'libavcodec',    '>= 58.4.100',
     'libavformat',   '>= 58.0.102',
     'libswscale',    '>= 5.0.101',
     'libavfilter',   '>= 7.0.101',