diff --git a/ffmpeg.c b/ffmpeg.c
index f5025b0be0..cbfacc0873 100644
--- a/ffmpeg.c
+++ b/ffmpeg.c
@@ -4263,6 +4263,8 @@ static OutputStream *new_subtitle_stream(OptionsContext *o, AVFormatContext *oc,
 
     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
 
+    MATCH_PER_STREAM_OPT(copy_initial_nonkeyframes, i, ost->copy_initial_nonkeyframes, oc, st);
+
     return ost;
 }