RawDVContext *c = s->priv_data;
RawDVContext *r = s->priv_data; DVDemuxContext *c = r->dv_demux; int i; int64_t offset= dv_frame_offset(s, c, timestamp, flags); const DVprofile* sys = dv_codec_profile(&c->vst->codec);
static int dv_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp){    RawDVContext *c = s->priv_data;    return url_fseek(&s->pb, dv_frame_offset(c->dv_demux, timestamp), SEEK_SET);}