Run .exe File in PR via ExtendScript

[mathiasf55381090]

Hi,

I'm trying to run a .exe File via ExtendScript. We're doing the same in AE which works fine using "system.callSystem(xyz.exe)" but "system" is unknown to Premiere.

Any ideas how to solve this?

Thanks,

Mathias

[Thomas_Szabo]

Node.js is your friend. You can execute commands using the node.js module 'child_process'. It works like this:

var process = require('child_process');

var exec = process.exec;

var cmd = "your windows prompt command";

exec(cmd, function(err, stdout, stderr) {

});

Since I´m a mac user, I have no idea which command executes an exe file from the command prompt but I'm sure you know it.

I hope this helps.

Thomas

[mathiasf55381090]

Thomas, thanks a lot for your fast response!

I'm still trying to understand what node.js is about... it only works in HTML, right? Right now I'm using the ExtendScript Toolkit only.

[Thomas_Szabo · Accepted solution]

Exactly, node.js is not available in ExtendScript.

You can see it as some kind of framework/library that gives you server-features that standard browsers do not have. You can access the file-system or (in this case) execute shell commands. See the docs for all features: Node.js v4.1.0 Manual & Documentation 

Node.js is running inside Premiere and you use it in your Javascript code. So you don't have to install it or set a server up, it's all there waiting for you to be used.

You can read more about it here: CEP 6 HTML Extension Cookbook for CC 2015 · Adobe-CEP/CEP-Resources Wiki · GitHub

It is worth noting that you have to enable node.js in the CSXS/manifest.xml file of your panel. Like this:

<DispatchInfoList>

        <Extension Id="com.frameio.panel">

            <DispatchInfo >

                <Resources>

                    <MainPath>./index.html</MainPath>

                    <CEFCommandLine>

                        <Parameter>--enable-nodejs</Parameter>

...

Thomas

[Bruce Bullis]

Mathis, here's an old blog post about CEP panels, that shows how to fire a command line from within a panel; search it for 'mkdir'.

[mathiasf55381090]

Thank you both!

It took some time to set up this HTML thing, but now its working!

[Dmitriy5FD0]

Is there any way to call CEP script for extendscript to run external command?

From CEP panel i'm starting extendscript that creates sequense, and i need to run external ffmpeg command to make speedramp on some video files before inserting them to sequense (Time remapping is not available through extendscript)

[mathiasf55381090]

Is there any possibility to make javascript wait until the cmd command is finished?

In my case the command is writing a txt file that will be processed later. At the moment javascript does not wait until it is complete which leads to some strange results...

[Bruce Bullis]

I think the "use callback functions" suggestion on this StackOverFlow page will do what you want, without introducing a JQuery dependency (as the "use JQuery promises" suggestion would)...

http://stackoverflow.com/questions/21518381/proper-way-to-wait-for-one-function-to-finish-before-con...