diff --git a/libavformat/rmdec.c b/libavformat/rmdec.c
index 91f4241da4..278fc37b45 100644
--- a/libavformat/rmdec.c
+++ b/libavformat/rmdec.c
@@ -377,11 +377,16 @@ ff_rm_read_mdpr_codecdata (AVFormatContext *s, AVIOContext *pb,
         if ((ret = rm_read_extradata(pb, st->codec, codec_data_size - (avio_tell(pb) - codec_pos))) < 0)
             return ret;
 
-        av_reduce(&st->avg_frame_rate.den, &st->avg_frame_rate.num,
-                  0x10000, fps, (1 << 30) - 1);
+        if (fps > 0) {
+            av_reduce(&st->avg_frame_rate.den, &st->avg_frame_rate.num,
+                      0x10000, fps, (1 << 30) - 1);
 #if FF_API_R_FRAME_RATE
-        st->r_frame_rate = st->avg_frame_rate;
+            st->r_frame_rate = st->avg_frame_rate;
 #endif
+        } else if (s->error_recognition & AV_EF_EXPLODE) {
+            av_log(s, AV_LOG_ERROR, "Invalid framerate\n");
+            return AVERROR_INVALIDDATA;
+        }
     }
 
 skip: