+ AVStream *st;
+
+ if (vid->video_index < 0) {
+ st = avformat_new_stream(s, NULL);
+ if (!st)
+ return AVERROR(ENOMEM);
+ vid->video_index = st->index;
+ if (vid->audio_index < 0) {
+ avpriv_request_sample(s, "Using default video time base since "
+ "having no audio packet before the first "
+ "video packet");
+ }
+ avpriv_set_pts_info(st, 64, 185, vid->sample_rate);
+ st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
+ st->codec->codec_id = AV_CODEC_ID_BETHSOFTVID;
+ st->codec->width = vid->width;
+ st->codec->height = vid->height;
+ }
+ st = s->streams[vid->video_index];
+ npixels = st->codec->width * st->codec->height;