diff --git a/libavcodec/vc1.c b/libavcodec/vc1.c
index b03eb94167..b3955f26de 100644
--- a/libavcodec/vc1.c
+++ b/libavcodec/vc1.c
@@ -490,7 +490,6 @@ static int decode_sequence_header_adv(VC1Context *v, GetBitContext *gb)
                 }
             }
             if (v->broadcast) { // Pulldown may be present
-                v->s.avctx->framerate.num  *= 2;
                 v->s.avctx->ticks_per_frame = 2;
             }
         }
diff --git a/libavcodec/vc1_parser.c b/libavcodec/vc1_parser.c
index 33e672fa0f..3a2308ecc6 100644
--- a/libavcodec/vc1_parser.c
+++ b/libavcodec/vc1_parser.c
@@ -112,6 +112,8 @@ static void vc1_extract_header(AVCodecParserContext *s, AVCodecContext *avctx,
 
         break;
     }
+    if (avctx->framerate.num)
+        avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
 }
 
 static int vc1_parse(AVCodecParserContext *s,