Script to start, render and exit.

[Chris B]

Hi all,

I'm looking to do a slide show with a "coverflow" style animation. I have a Vegas Pro 11 project which does a single movement and photos numbered from 1 to 10. My intention is to replace the photo files and re-render the project multiple times. I'd like to do this programatically if at all possible. Now - I can move the photos around so all I need to do is fire up Vegas and have it render a project then quit again. I thought there would be a command line option for this - but it appears not - so I think I need to use a script.

So my question (eventually) is - does anyone have - or have advice about - a script that simply renders a project to a pre-defined render then quits Vegas? All advice gratefully received .

[Paul LS]

Have you looked at JetDV's site he has a bunch of scripts including batch rendering, There might be something there:-
http://www.jetdv.com/vegas/forum/index.php

[Chris B]

Thanks Paul - I've figured it out - I've taken a pre existing script and stripped it down. I'll post later after I've cleaned up the code. (Plus an example video )

[Chris B]

OK - here's the script.

Invoke Vegas with a command line similar to the following:

Code: Select all

"C:\Program Files\Sony\Vegas Pro 11.0\vegas110.exe" /OPEN "D:\Video\test.veg" -SCRIPT:"D:\Video\renderquit.js"

Code: Select all

/**
 * This script renders a project to a pre-defined format then quits Vegas.
 * Used to render a file from the command line.
 * Based on scripts from http://s92274348.onlinehome.us/vegas.html
 * Revision Date: Oct 14, 2012.
 **/

import System;
import System.Text;
import System.IO;
import System.Windows.Forms;
import Sony.Vegas;

// The rendererRegexp and templateRegexp variable are regular
// expressions used to match renderer file type names and template
// names.
var rendererRegexp = /Sony AVC\/MVC/;
var templateRegexp = /Blu-ray 1920x1080-50i, 16 Mbps video stream/;

// This section performs the render

try {

    var renderer = FindRenderer(rendererRegexp);
    if (null == renderer) {
        throw "Failed to find renderer";
    }

    var renderTemplate = FindRenderTemplate(renderer, templateRegexp);
    if (null == renderTemplate) {
        throw "Failed to find render template";
    }

    var newExtension = renderer.FileExtension.substring(1);

    // Filename for redered output (extension will be determined by render type)
    var outputFileName = "rendered" + newExtension
    // Output path of video file
    var outputPath = Path.Combine("d:/video", outputFileName);

    var status = DoRender(outputPath, renderer, renderTemplate);
    if (status != RenderStatus.Complete) {
        throw "Failed ";
    }

} catch (e) {
    if (!e.skipMessageBox)
        MessageBox.Show(e);
}

// Quit vegas at the end (will only work if no changes made to file)
Vegas.Exit();

// Perform the render.  The Render method returns a member of the
// RenderStatus enumeration which is, in turn, returned by this
// function.
function DoRender(fileName, rndr, rndrTemplate) {
    var status = Vegas.Render(fileName, rndrTemplate);
    return status;
}

function FindRenderer(rendererRegExp : RegExp) : Renderer {
    var rendererEnum : Enumerator = new Enumerator(Vegas.Renderers);
    while (!rendererEnum.atEnd()) {
        var renderer : Renderer = Renderer(rendererEnum.item());
        if (null != renderer.FileTypeName.match(rendererRegExp)) {
            return renderer;
        }
        rendererEnum.moveNext();
    }
    return null;
}

function FindRenderTemplate(renderer : Renderer, templateRegExp : RegExp) : RenderTemplate {
    var templateEnum : Enumerator = new Enumerator(renderer.Templates);
    while (!templateEnum.atEnd()) {
        var renderTemplate : RenderTemplate = RenderTemplate(templateEnum.item());
        if (null != renderTemplate.Name.match(templateRegExp)) {
            return renderTemplate;
        }
        templateEnum.moveNext();
    }
    return null;
}


[Paul LS]

Good job I have used scripts in Vegas Pro but haven't "tinkered" with them.

[RJ Johnston]

Oh, yeah. Works like a charm. Thank you, Chris.

[Chris B]

OK - So as mentioned in the showcase thread there was some Python involved. This relies on there being the following in the same directory/folder.

A directory called "photos" that contains all the photos
A file called "files.txt" that contains the filenames of the photos that you want to use in order
a file runvegas.bat that launches Vegas using the above script
A Vegas project file launched by the script that uses files called 1.jpg to 10.jpg to perform the effect.

This code is hard coded to use the output render type that Vegas produces (mp4) and will produce video files video000.mp4 etc.
Here's the Python code (uses python 2.5):

Code: Select all

import fileinput
import shutil
import os.path
import subprocess

photos=[]
for l in fileinput.input("files.txt"):
    if len(l)>2:
        photos.append(l.rstrip())
fileinput.close()

if len(photos)<9:
    print "Too few files in list"
    exit()

v=len(photos)
photos=photos[-4:]+photos+photos[0:5]

for x in range(len(photos)-9):
    print "Video",x+1,"of",v
    for y in range(1,11):
        shutil.copy(os.path.join("photos",photos[x+y-1]),str(y)+".jpg")
    subprocess.call(['runvegas.bat'])
    shutil.copy('rendered.mp4','video'+('000'+str(x))[-3:]+".mp4")
print "Finished!"