diff --git a/libavformat/movenc.c b/libavformat/movenc.c
index ce82acf914..1c178fc4bc 100644
--- a/libavformat/movenc.c
+++ b/libavformat/movenc.c
@@ -6500,7 +6500,8 @@ static int mov_init(AVFormatContext *s)
                     av_log(s, AV_LOG_ERROR, "%s only supported in MP4.\n", avcodec_get_name(track->par->codec_id));
                     return AVERROR(EINVAL);
                 }
-                if (s->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
+                if (track->par->codec_id != AV_CODEC_ID_OPUS &&
+                    s->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
                     av_log(s, AV_LOG_ERROR,
                            "%s in MP4 support is experimental, add "
                            "'-strict %d' if you want to use it.\n",