diff --git a/etc/codecs.conf b/etc/codecs.conf
index dcce4004de..a4989bc057 100644
--- a/etc/codecs.conf
+++ b/etc/codecs.conf
@@ -1523,6 +1523,7 @@ videocodec ffrv20
   info "FFmpeg RV20 decoder"
   status working
   fourcc RV20,rv20
+  fourcc RVTR
   driver ffmpeg
   dll rv20
   out YV12,I420,IYUV