How do I make my script wait until exporting is done?

Scripting Forums AppleScript | Mac OS X
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#1

Hi Everyone-

How do I make my script wait until exporting is done? I have most of my script working now. It will cut a sound file into three segments in quicktime but after I start exporting the first segment into MPEG4, the rest of the script times out. I want the script to wait on each export so that I can export all three.

Any ideas?

Thanks.
SA
:smiley:

#2

Maybe you can add a repeat loop, after the export command, that uses the Finder to check every x seconds to see when the size of the exported file stops changing. Or maybe you need only to increase the timeout.

with timeout of 600 seconds
	-- export stuff
end timeout

– Rob

#3

Inside your tell “Quicktime” and after your try on error for the export try this:


try
	repeat
		if done of movie 1 is true then
			exit repeat
		else
			delay 3
		end if
	end repeat
--close movie 1
end try

Using the timeout is good to use as well.

#4

Brandon, does ‘done’ apply to tasks other than playing the movie?

– Rob

#5

According to the Dictionary, Nope :?
From the QuickTime Pro Dictionary:

Here is how I use this snippet:


on process_item(this_item)
try
		tell application "QuickTime Player"
			activate
			--set show movie info window to true
			--close when done
			if window named "Untitled 1" exists then
				close window named "Untitled 1"
			end if
			--my toggle_suppress(true)
			open this_item
			
			set position of window 1 to {2, 20}
			try
				--play movie 1
				--Used to add leading zero's, and count number of item to the filename
				set new_file to (_Destination & my add_leading_zeros(item_counter, 2) & ".mp4") as string
				export movie 1 to file new_file as MPEG4 using default settings with replacing
				close movie 1
				set item_counter to item_counter + 1
				--play movie 1
			on error errMsg number errNum from errFrom partial result errResult to errTo
				if errNum is not -128 then
					activate
					display dialog errNum buttons {"OK"} default button 1
				end if
				error number -128
			end try
			try
				repeat
					if done of movie 1 is true then
						exit repeat
					else
						delay 3
					end if
				end repeat
				set current time of movie 1 to 18000
				close movie 1
			end try
		end tell
	on error errMsg number errNum from errFrom partial result errResult to errTo
		-- on error code goes here
		my toggle_suppress(false)
		if errNum is not -128 then
			activate
			display dialog errNum buttons {"OK"} default button 1
		end if
		error number -128
	end try
	
end process_item

So I guess just using the timeout would be better and proper.

#6

Maybe there is a way within applescript?

There ought to be a way to check if a task is completed in applescript to keep it from giving a timeout error?

Any ideas?

I’d rather not use the timeout method since I want this to be somewhat automated and am not sure I can put a definitive time on the exportation of the file. That is why I would rather have the script to keep checking if the the export is complete or not before continuing on.

Maybe I could set a variable at the begining of the loop and check the variable at the end of the loop? But that does not seem like it would work either since the next line of the code can not be read.

Any more ideas?

Thanks in advance.
SA
:smiley:

#7

If the timeout is set to 600 seconds and it takes only 200 seconds to complete a task, the script will move on to the next step after 200 seconds. Every command has a default timeout interval and this simply lengthens it for operations that cannot be completed within the default amount of time.

– Rob

#8

Could you check to see if the export window still exists?