if (swf->video_frame_number == 0) {
/* create a new video object */
put_swf_tag(s, TAG_VIDEOSTREAM);
avio_wl16(pb, VIDEO_ID);
swf->vframes_pos = avio_tell(pb);
avio_wl16(pb, 15000); /* hard flash player limit */
if (swf->video_frame_number == 0) {
/* create a new video object */
put_swf_tag(s, TAG_VIDEOSTREAM);
avio_wl16(pb, VIDEO_ID);
swf->vframes_pos = avio_tell(pb);
avio_wl16(pb, 15000); /* hard flash player limit */