@@ -741,11 +741,11 @@ DVDemuxContext* dv_init_demux(AVFormatContext *s)

     c->vst->codec.codec_type = CODEC_TYPE_VIDEO;

     c->vst->codec.codec_id = CODEC_ID_DVVIDEO;

     c->vst->codec.bit_rate = 25000000;

+    c->vst->start_time = 0;

     c->ast[0]->codec.codec_type = CODEC_TYPE_AUDIO;

     c->ast[0]->codec.codec_id = CODEC_ID_PCM_S16LE;

-   

-    s->ctx_flags |= AVFMTCTX_NOHEADER; 

+    c->ast[0]->start_time = 0;

     return c;

@@ -849,9 +849,18 @@ static int dv_read_header(AVFormatContext *s,

                           AVFormatParameters *ap)

 {

     RawDVContext *c = s->priv_data;

+    const DVprofile* sys;

     c->dv_demux = dv_init_demux(s);

+    if (!c->dv_demux)

+        return -1;

-    return c->dv_demux ? 0 : -1;

+    if (get_buffer(&s->pb, c->buf, 4) <= 0 || url_fseek(&s->pb, -4, SEEK_CUR) < 0)

+        return AVERROR_IO;

+

+    sys = dv_frame_profile(c->buf);

+    s->bit_rate = av_rescale(sys->frame_size * 8, sys->frame_rate, sys->frame_rate_base);

+   

+    return 0;

 }