BEGIN {
    RS="\n"
    ORS="\n"
    FS="[=/]"
    mark["width"]=30
    mark["height"]=31
    mark["avg_frame_rate"]=32
    mark["duration"]=33
    mark["total_frames"]=34
}
# A typical record looks like: (I don't know how to remove duplicates)
# width=1280
# height=720
# avg_frame_rate=60000/1001
# duration=719.385322
# width=1280
# height=720
# avg_frame_rate=60000/1001
# duration=719.385322
# --
/width|height|avg_frame_rate|duration/{
    if($1 ~ /avg_frame_rate|duration/) {
	if (NF == 3 && $2 ~ /[0-9]+/ && $3 ~ /[1-9][0-9.]*/) {
	    #print $2 " " $3
	    a[$1] = int($2/$3*1000+0.5)
	} else {
	    a[$1] = int($2*1000+0.5)
	}
    } else {
	a[$1] = $2
    }
}
END {
    a["total_frames"]=int(a["duration"]*a["avg_frame_rate"]/1000/1000+0.5)
    for (k in a) {
	printf "<mark data=\"%s\" frame=\"0\" type=\"%s\"/>\n", a[k], mark[k]
    }
}