diff --git a/convert.sh b/convert.sh
index c6778ce..f5cd8e2 100644
--- a/convert.sh
+++ b/convert.sh
@@ -25,5 +25,20 @@ for name in *.aiff; do
   rm -rf "$name"
 done
 
+for name in *.mp4; do
+  ffmpeg -i "$name" -acodec libvorbis "$(echo "$name" | sed -ne 's/mp4/ogg/gp')"
+  rm -rf "$name"
+done
+
+for name in *.mkv; do
+  ffmpeg -i "$name" -acodec libvorbis "$(echo "$name" | sed -ne 's/mkv/ogg/gp')"
+  rm -rf "$name"
+done
+
+for name in *.webm; do
+  ffmpeg -i "$name" -acodec libvorbis "$(echo "$name" | sed -ne 's/webm/ogg/gp')"
+  rm -rf "$name"
+done
+
 rm -rf convert.sh
 rm -rf *.m3u