I tried everything, but it's not working
.
When you execute the script with the shutter button, your camera can't do anything, every button on the camera is dead,
so you can't start to record the video.
You must execute the script after you press the record button, (<ALT>, then shutter button and the script start), but again during the recording you can't do anything (zoom in or zoom out).
The script do its job, it override the 29'59'' seconds and the camera gone till 45min, 60min, but when the camera must save the file the camera shuts down. You must power up your camera and the file is nowhere to be found, but it occupied the space on your card, so you must format your card and install CHDK again.
I tried to wait till 35min finish, I tried during the recording around min 31'40'' to select <ALT> and disable the script with shutter button and press the record button to stop the recording but again the camera shuts down. It was not because of limit of 4Gb. I set movies to quality 20 and 30 and they had just about 1 - 1,5Gb.
I think that the script is doing it's job, but just half of it.
Another script must be added to override the camera saving system, because I think that when the 29'59'' seconds passed camera can't save the file and shuts down.