diff --git a/libavcodec/h264_parser.c b/libavcodec/h264_parser.c
index 2ed155cdfd..da2a5f99db 100644
--- a/libavcodec/h264_parser.c
+++ b/libavcodec/h264_parser.c
@@ -417,6 +417,7 @@ static av_cold int init(AVCodecParserContext *s)
     H264Context *h = s->priv_data;
     h->thread_context[0]   = h;
     h->slice_context_count = 1;
+    ff_h264dsp_init(&h->h264dsp, 8, 1);
     return 0;
 }