static int vc1t_read_header(AVFormatContext *s, AVFormatParameters *ap) { ByteIOContext *pb = s->pb; AVStream *st; int fps, frames; frames = get_le24(pb); if(get_byte(pb) != 0xC5 || get_le32(pb) != 4) return -1; /* init video codec */ st = av_new_stream(s, 0); if (!st) return -1; st->codec->codec_type = CODEC_TYPE_VIDEO; st->codec->codec_id = CODEC_ID_WMV3; st->codec->extradata = av_malloc(VC1_EXTRADATA_SIZE); st->codec->extradata_size = VC1_EXTRADATA_SIZE; get_buffer(pb, st->codec->extradata, VC1_EXTRADATA_SIZE); st->codec->height = get_le32(pb); st->codec->width = get_le32(pb); if(get_le32(pb) != 0xC) return -1; url_fskip(pb, 8); fps = get_le32(pb); if(fps == -1) av_set_pts_info(st, 32, 1, 1000); else{ av_set_pts_info(st, 24, 1, fps); st->duration = frames; } return 0; }