im@s2 questionboxes detection - pausing & timer

ffmpegsource2("C:\Users\Seedmanc\Desktop\[765subs] Ganaha Hibiki - Episode 10.mp4")
converttoyv12
# boxes sizes
w=round(312*width/(1280*2)) *2              # this way we get independent from source resolution
h=round(120*height/(720*2)) *2              # having boxes' coordinates relative instead of absolute
# coordinates of left box
xb=round(196*width/(1280*2)) *2             # also this ensures mod2 rule, since video in YV12 format
yb=round(322*height/(720*2)) *2             # must have even dimensions
# coordinates of right box
xr=round(770*width/(1280*2)) *2
yr=round(322*height/(720*2)) *2
# we don't need third box, as it is not always present
src1= crop(xb,yb,w,h).blur(1.58)            # source video area of left box
bluemask=src1.maskhs(starthue=360-45,endhue=360-7,maxsat=70,minsat=5).converttoyv12.mt_inflate.mt_expand
# ^ selection by color blue
src2= crop(xr,yr,w,h).blur(1.58)            # source video area of right box
redmask = src2. maskhs(starthue=60, endhue=120, maxsat=75, minsat=10 ) .converttoyv12. mt_inflate. mt_expand
# ^ selection by color red
comb=mt_logic(bluemask, redmask, mode="min")
# ^ combining masks by AND operator - so that detection happens only when both boxes are found
xt=round(612*width/(1280*2)) *2
yt=round(324*height/(720*2)) *2
# ^ coordinates of timer
wt=round(44*width/(1280*2)) *2
ht=round(64*height/(720*2)) *2
st=round(72*height/(720))
# ^ sizes of timer, change 72 in st for font size
frame=0
detected=false
temp="frame=current_frame detected=true"
scriptclip("""(AverageLuma(comb)>245) ?  \
 eval("(detected==false)?eval(temp):nop \
 freezeframe(0,framecount-1,frame)      \
 overlay(crop(xt,yt,wt,ht).subtitle(string(round(6-(current_frame-frame)/framerate)),size=st,text_color=$00FFFFFF,halo_color=$00FF0088),x=xt,y=yt)")   : \
 eval( "detected=false last")
""")
 __END__
Now it pauses until question boxes disappear, while showing it's own timer in place of one in the source video.