Help Needed: Automator Applescript for Folder Action - Encode Video

Question

Hi !
I have created an Automator Applescript for a Folder Action to do the following:
When a new video file is moved to the target folder (i.e. Download of Vuze is done), automatically launch the Applescript Action that does the followin g(Applescripted):
1) Using "run shell script" and FFMPEG on a UNIX command line, determine Width/Height, Framerate, Bitrate
2) Calculate encoding parameters (slightly reduced bitrate, reduced Aspect etc.)
3) Using "run shell script" with ffmpeg on the command line and the calculated parameters to encode the video file
At the same time, the action is written to a log file so I know if a file is recognized, when encoding started etc.
It works fine if I save this Action as an .app, make an alias on the Desktop and drop video files on it.
It also works fine if I attach the script to a folder as a folder action and drag a video file in there.
However, when I attach the script as a folder action to the Vuze download folder, it encodes only some video files, i.e. if there was a download of 5 files, chances are good that it will not encode 1 or 2 files out of those 5.
If for example a second download finishes while the encoding for the first download is still going on, sometimes the second file starts encoding after the first encode finishes, sometimes it does not, the file does not make the log file at all, i.e. the folder action missed it or the automator action dropped it because it was still encoding. Still, sometimes it happens, sometimes not.
As I need a solution that is 100% accurate, I would like to ask if there are any ideas on how to do this better maybe? As I am not an Applescript Guru, I would need some help to know what works and what doesn't and what the syntax is.
My main idea right now:
Similar to how ffmpegX works with its "process" application, have a second script (as .app) that receives the files to be encoded from the automator action and puts them in a queue, then proceeds to encode this queue while the main automator action is free to receive the next file.
Writing this second app is quite straightforward (a modified version of my current script) but I have some questions I need help with:
1) How do I call another applescript from within an existing applescript that launches the new applescript in a new process?
2) How do I pass parameters to this new applescript?
3) In case of this "Queueing" Idea, once I called the external applescript the first time, how do I make sure when I call next time, that I don't open a second instance of this script but rather pass another queue item to the original instance to be processed?
Or in general: Is there a better way to achieve this automatic encoding solution that I have not thought about?
Alternatively:
Does anyone know how to call the "process" application that comes with the ffmpegX package with the correct parameters to use as a queueing / processing tool?
Thanks!
Joe
Message was edited by: Joe15000
Message was edited by: Joe15000

Answer 1

To do this, I created an Automator workflow with an Applescript snippet to change the 'media kind'.
Here is the 'Run Applescript' workflow step code:
on run {input, parameters}
          tell application "iTunes"
                    set video kind of (item 1 of input) to movie
          end tell
          return input
end run
Prior to this running, I have an 'Import Files into iTunes' workflow step.
You can switch out 'movie' with: 'TV show', 'music video', or anything in ITLibMediaItemMediaKind.
Good luck,
Glenn