diff --git a/avconv.c b/avconv.c
index 92ffd0fd0d..862e325ad9 100644
--- a/avconv.c
+++ b/avconv.c
@@ -1795,6 +1795,7 @@ static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *p
     if (  ost->st->codec->codec_id != CODEC_ID_H264
        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
+       && ost->st->codec->codec_id != CODEC_ID_VC1
        ) {
         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
             opkt.destruct = av_destruct_packet;