Video zoom and focus script - Script Writing - CHDK Forum
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Video zoom and focus script

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Offline kamil

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  • 21
  • G7
Video zoom and focus script
« on: 29 / January / 2008, 06:38:13 »
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Hi

I wrote script for G7 cameras (and G9 i suppose) with zoom jumping and manual focus. G7 don't have autofocus in video mode. Maybe others cameras have it. I hope that this script will help somebody.

I know that it is not best solution for zooming and focusing. It's complicated and noisy. But i didnt found simillar script for video. For fast zoom changing and focus is possible by presets.

If you want any changes please report.

Nice standard zooming and autofocusing is impossible at now i think so. CHDK must change (add better zoom in, zoom out operations like get_zoom_in_press, get_zoom_in_release, something for autofocus)

Sorry for my english  :-X
Its my first script so sorry also for errors if they are (i haven't bugs in my allbest CHDK). Please test it on other cameras and report how it's work (change focus algorithm and zoom extremal values to fit Your camera)
Code: [Select]
rem Author kamil, v.1.0
@title zoom and focus in video for g7
@param a zoom jump \erase\ (std)
@default a 7
@param b zoom jump \left\
@default b 1
@param c zoom jump \set\
@default c 3
@param d zoom jump \right\
@default d 5
@param e zoom jump \display\
@default e 11
@param g focus at start (1-11)
@default g 5
@param f focus jump to \menu\ (*100)
@default f 13
@param h help (1-on)

if h=1 then gosub "help"

get_prop 12 q
if q=0 then set_prop 12 1

z=a
v=g

press "shoot_half"
sleep 800
click "shoot_full"

:loop
wait_click
if is_key "zoom_in" then goto "in"
if is_key "zoom_out" then goto "out"
if is_key "up" then goto "add_focus"
if is_key "down" then goto "min_focus"
if is_key "display" then z=e
if is_key "erase" then z=a
if is_key "left" then z=b
if is_key "set" then z=c
if is_key "right" then z=d
if is_key "menu" then goto "focus_extra"
if is_key "shoot_half" then goto "end"
print "zoom jump", z
goto "loop"

:in
if z<0 then let z=1
if z>13 then let z=13
set_zoom_rel z
get_zoom r
print "zoom", r
goto "loop"

:out
if z<0 then let z=1
if z>13 then let z=13
set_zoom_rel -z
get_zoom r
print "zoom", r
goto "loop"

:add_focus
v=v+1
gosub "focus_dance"
goto "loop"

:min_focus
v=v-1
gosub "focus_dance"
goto "loop"

:focus_dance
if v<1 then let v=1
if v>11 then let v=11
u=(v*v*v*v)+80
if v=11 then u=65535
print "focus", u; "mm"
set_focus u
return

:focus_extra
u=f*100
set_focus u
goto "loop"

:end
click "shoot_full"
end

:help
print "When You need a special"
print "functions in camera..."
print "Use with CAUTION"
print " - [ click ANY KEY ] - "
wait_click
print "written for G7"
print "You must change script"
print "of ZOOM and FOCUSING"
print "data for your camera"
print " - [ click ANY KEY ] - "
wait_click
print "KEYS:"
sleep 1000
print "- up/down - focus (11)"
print "- left/set/right/disp"
print "  /erase - ZOOM PRESETS"
print "- menu - FOCUS PRESET"
print " - [ click ANY KEY ] - "
wait_click
print "Feel free in modify this"
print "script to make it more"
print "comfortable"
print " "
print " - [ click ANY KEY ] - "
wait_click
print "press SHOOT HALF"
print "to end recording"
print "Because of zoom and"
print "focusing noises"
print " - [ click ANY KEY ] - "
wait_click
print "i suggest record the"
print "sound with another"
print "recorder and join with"
print "nandub for example"
print " - [ click ANY KEY ] - "
wait_click
print "enter 0 in param help"
print "Now set camera to video"
print "Script will start"
print "recording..."
print " - [ click ANY KEY ] - "
wait_click
cls
return

end
« Last Edit: 29 / January / 2008, 07:19:01 by kamil »
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Offline kamil

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  • 21
  • G7
Re: Video zoom and focus script
« Reply #1 on: 07 / February / 2008, 09:43:26 »
Version 2.0  :)

News:
- exp_cor button in g7 camera
- display & menu keys can change zoom and focus rapidly. They are also configurable, you can disable zoom or focus on it by enter 0 param
- better focus
- other small changes

Other cameras:
If your camera dont have 13 zoom stops then you can change value of "k" in 31 line of code.
If you have different focus numbers then you must change math expression :(

I'm waiting for report bugs and suggestions

[add 21.02.2008:]

ver. 2.5

News:
- there was na error in "menu" focusing"
- nice visualisation of important parameters

Code: [Select]
rem Author kamil, script ver. 2.5, allbuild, works on g7,a710is,...
@title zoom and focus in video
@param a auto focus /erase/
@default a 3
@param b auto focus /expo_corr/
@default b 10
@param c step zoom /left/
@default c 4
@param d step zoom /set/ - at start
@default d 7
@param e step zoom /right/
@default e 13
@param f auto zoom /display/
@default f 1
@param g auto focus /display/
@default g 2
@param h auto zoom /menu/
@default h 11
@param i auto focus /menu/
@default i 10
@param j help (1-on)
@default j 1

if j=1 then gosub "help"

get_prop 12 q
if q=0 then set_prop 12 1

z=d

rem zoom range, change this value if your zoom is different
k=13

get_zoom t
get_focus u
o=0

do
o=o+1
p=o*o*(o+1)*(o+1)+90
until u<p

v=o
if v>11 then let v=11

press "shoot_half"
sleep 800
click "shoot_full"

:loop
cls
print "        ", z, "|"
print t; "/" k, "-zoom |","focus-", v; "/11"
wait_click
cls
if is_key "zoom_in" then goto "in"
if is_key "zoom_out" then goto "out"
if is_key "up" then goto "add_focus"
if is_key "down" then goto "min_focus"
if is_key "left" then z=c
if is_key "set" then z=d
if is_key "right" then z=e
if is_key "erase" then goto "focus_1"
if is_key "expo_corr" then goto "focus_2"
if is_key "display" then goto "zoom_focus_1"
if is_key "menu" then goto "zoom_focus_2"
if is_key "shoot_half" then goto "end"
goto "loop"

:in
if z<0 then let z=1
if z>k then let z=k
set_zoom_rel z
get_zoom t
print "zoom", t; "/" k
goto "loop"

:out
if z<0 then let z=1
if z>k then let z=k
set_zoom_rel -z
get_zoom t
print "zoom", t; "/" k
goto "loop"

:focus_1
v=a
gosub "focus_dance"
goto "loop"

:focus_2
v=b
gosub "focus_dance"
goto "loop"

:zoom_focus_1
if g>0 then gosub "focus_zoom_focus_1"
if f>0 then gosub "zoom_zoom_focus_1"
if g>0 then gosub "focus_zoom_focus_1"
goto "loop"

:focus_zoom_focus_1
v=g
gosub "focus_dance"
return

:zoom_zoom_focus_1
set_zoom f
t=f
return

:zoom_focus_2
if i>0 then gosub "focus_zoom_focus_2"
if h>0 then gosub "zoom_zoom_focus_2"
if i>0 then gosub "focus_zoom_focus_2"
goto "loop"

:focus_zoom_focus_2
v=i
gosub "focus_dance"
return

:zoom_zoom_focus_2
set_zoom h
t=h
return

:add_focus
v=v+1
gosub "focus_dance"
goto "loop"

:min_focus
v=v-1
gosub "focus_dance"
goto "loop"

:focus_dance
u=(v*v*v*v)+90
if v>=11 then u=65535
if v<1 then let v=1
if v>11 then let v=11
set_focus u
return

:end
click "shoot_full"
end

end

:help
print "Use with CAUTION"
print "working on G7,A710is"
print "maybe others too"
print "or you need modify this"
print " - [ click ANY KEY ] - "
wait_click
print "script. Zoom and focus"
print "values could be different"
print "lines to modify:"
print "31,132,133"
print " - [ click ANY KEY ] - "
wait_click
print "keys:"
print "UP/DOWN - focusing"
print "ZOOM IN/ZOOM OUT -zooming"
print "LEFT/SET/RIGHT - zoom set"
print " - [ click ANY KEY ] - "
wait_click
print "ERASE/EXP - focus set"
print "DISPL/MENU - zoom & focus"
print "You can disable focus"
print "or zoom setting by enter"
print " - [ click ANY KEY ] - "
wait_click
print "0 parameter"
print "focus has 11 steps"
print "zoom has 13 steps"
print "Use DISPLAY & MENU"
print " - [ click ANY KEY ] - "
wait_click
print "for best & fast results."
print "Press SHOOT HALF"
print "to stop recording"
print "Because of zoom and"
print " - [ click ANY KEY ] - "
wait_click
print "focusing noises"
print "i suggest record the"
print "sound with another"
print "recorder and join with"
print " - [ click ANY KEY ] - "
wait_click
print "nandub for example"
print "enter 0 in help param"
print "and play the game :)"
print " - [ click ANY KEY ] - "
wait_click
cls
return
« Last Edit: 21 / February / 2008, 08:15:53 by kamil »
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Offline obsidian

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  • 31
  • A710IS
Re: Video zoom and focus script
« Reply #2 on: 12 / February / 2008, 10:37:43 »
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A710IS + 4GB SanDisk Ultra II
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Offline kamil

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  • 21
  • G7
Re: Video zoom and focus script
« Reply #3 on: 14 / February / 2008, 07:28:08 »
wow  :)
it's nice

good job obsidian  ::)

You choose a different way of manipulation and it have sense. Very simple and useful is this half_shot zoom step changing. I think you have right, it's not to good using half_shot for stoping. It's working very fast and silent as zoom set changer. I must think about this in next version of my script.

I suggest You change minimal zoom step from 1 to 2. 1 step is really useless in my opinion.

Have you allbest #31? He wrote that focusing in zoom script is better. I dont see any improvment in practice. Do you?
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Offline dzsemx

  • ****
  • 302
  • [SX40HS][A650][A630]
Re: Video zoom and focus script
« Reply #4 on: 28 / February / 2008, 16:56:34 »
here's my script port for a630(a640), maybe it works on a620 and a610, too.
i had to restart my camera several times because of "lens errors"  :blink: and ugly noises :'(

but it looks safe now, before zooming, sets focus to infinite after zoom restores focus... the original firmware does something like this

for me it works without problems
tested with allbest's build 37
i suggest for other script writers to make these focusing operations when zooming

it's almost like the original one above, but:
/delete/ button is for focusing at cca 35 cm by default
/display/- 1X zoom - cca 2,6 meter focus by default
/menu/-4X zoom - infinite focus by default
zoom step by default is 4 by default so you can zoom in and out fully in two steps
/up/-/down/ is for manual focusing
/left/-/func/-/right/ modifies zoom stepping(2,4,8 by default)

Code: [Select]
rem Author kamil, adapted for A630(A640) by dzsemx, script ver. 2.1 or what
rem some help:
rem /delete/ button is for focusing at cca 35 cm by default
rem /display/- 1X zoom - cca 2,6 meter focus by default
rem /menu/-4X zoom - infinite focus by default
rem /up/-/down/ is for manual focusing
rem /left/-/func/-/right/ modifies zoom stepping(2,4,8 by default)
rem zoom step by default is 4 so you can zoom in or out fully in two steps
rem every parameter can be modified from the script menu to fit your needs
@title zoom and focus in video
@param a auto focus /erase/ 0=off
@default a 4
@param c step zoom /left/
@default c 2
@param d step zoom /set/ - at start
@default d 4
@param e step zoom /right/
@default e 8
@param f auto zoom /display/ -1=off
@default f 0
@param g auto focus /display/ 0=off
@default g 7
@param h auto zoom /menu/ -1=off
@default h 8
@param i auto focus /menu/ 0=off
@default i 11

get_prop 12 q
if q=0 then set_prop 12 1

z=d
rem used for safe zoom
x=11

rem zoom range, change this value if your zoom is different
k=8

get_focus u
o=0

do
o=o+1
p=o*o*(o+1)*(o+1)+90
until u<p

v=o

press "shoot_half"
sleep 800
click "shoot_full"
print "HALF SHOOT - stop record"
:loop
wait_click
if is_key "zoom_in" then goto "in"
if is_key "zoom_out" then goto "out"
if is_key "up" then goto "add_focus"
if is_key "down" then goto "min_focus"
if is_key "left" then let z=c
if is_key "set" then let z=d
if is_key "right" then let z=e
if is_key "erase" then goto "focus_1"
if is_key "display" then goto "zoom_focus_1"
if is_key "menu" then goto "zoom_focus_2"
if is_key "shoot_half" then goto "end"
goto "loop"

:in
if z<0 then let z=1
if z>k then let z=k
gosub "safe_focus"
set_zoom_rel z
get_zoom t
print "zoom", t; "/" k
gosub "focus_dance"
goto "loop"

:out
if z<0 then let z=1
if z>k then let z=k
gosub "safe_focus"
set_zoom_rel -z
get_zoom t
print "zoom", t; "/" k
gosub "focus_dance"
goto "loop"

:focus_1
v=a
gosub "focus_dance"
goto "loop"

:zoom_focus_1
if f>-1 then gosub "zoom_zoom_focus_1"
if g>0 then gosub "focus_zoom_focus_1"
goto "loop"

:focus_zoom_focus_1
v=g
gosub "focus_dance"
return

:zoom_zoom_focus_1
gosub "safe_focus"
set_zoom f
print "zoom", f; "/" k
return

:zoom_focus_2
if h>-1 then gosub "zoom_zoom_focus_2"
if g>0 then gosub "focus_zoom_focus_2"
goto "loop"

:focus_zoom_focus_2
v=i
gosub "focus_dance"
return

:zoom_zoom_focus_2
gosub "safe_focus"
set_zoom h
print "zoom", h; "/" k
return

:add_focus
v=v+1
gosub "focus_dance"
goto "loop"

:min_focus
v=v-1
gosub "focus_dance"
goto "loop"

:focus_dance
u=(v*v*v*v)+90
if v>=11 then u=65535
if v<1 then let v=1
if v>11 then let v=11
set_focus u
get_focus t
print "focus", v; "/11 ("t; " mm)"
return

:safe_focus
x=v
v=11
print "Safe focusing"
gosub "focus_dance"
v=x
sleep 10
return

:end
click "shoot_full"
end

end

if i wrote something wrong, excuse me, i'm a little bit sick and tired :'(
« Last Edit: 28 / February / 2008, 16:59:46 by dzsemx »
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Offline amatos

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  • 28
    • My Blog
Re: Video zoom and focus script
« Reply #5 on: 03 / March / 2008, 00:39:57 »
thanks for the script to both of you, obsidian's worked on my A720 like a charm :D
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Alejandro
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Offline yunxiang

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  • 23
Re: Video zoom and focus script
« Reply #6 on: 25 / March / 2008, 12:05:46 »
thanks for the script!!!!!!!!!!!!!!!!!!!

now the  new allbest have the ablility to     
Video zoom , but the focus can not change

we need a auto focus script
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Offline amatos

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  • 28
    • My Blog
Re: Video zoom and focus script
« Reply #7 on: 26 / March / 2008, 21:17:22 »
Quote from: yunxiang on 25 / March / 2008, 12:05:46
but the focus can not change
Yes you can, or at least you can using an A720...
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Alejandro
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Offline yunxiang

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  • 23
Re: Video zoom and focus script
« Reply #8 on: 27 / March / 2008, 12:06:00 »
now the new allbest have the ablility to     
Video zoom , but the focus can not change during the taking the video without the scrips
« Last Edit: 27 / March / 2008, 21:26:14 by yunxiang »
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Offline kamil

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  • 21
  • G7
Re: Video zoom and focus script
« Reply #9 on: 27 / March / 2008, 14:55:35 »
Yes i know, guys makes a good work :) . But there is a small bug on my camera. I can't escape from digital zoom and make an optical zoom. Maybe in the future it will be corrected. BTW my script is useless in a big part. So i must correct it.
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