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January 2010 Archives

Batch image exporting from .fla


Just wanted to post a small .jsfl code snippet to export .png images from each frames in the current timeline (with the currenrt .png export settings).

Download Demo Files

Although the same is possible by "Export" -> "Export Movie..." then choosing "png sequence" as the file format, jsfl can be more flexible as;

  1. It can export images from any (current) timeline
    Correction: It is also possible from "Export Movie", sorry for my ignorance.. orz
  2. It can possibly perform more complex batch processing (with a bit of code modification)
  3. The direct keyboard shortcut (with no dialog) can be assigned to it

Basic Usage

  1. Open the .fla from which you want to export the image (In the Demo, it is "ExportImagesTest.fla").
  2. From the menu, "Commands" -> "Run Command..." and open "_ExportImages.jsfl".

And, here is the Adobe Reference for how to run .jsfl in different ways;
Running JSFL files (Adobe Livedocs)

The image file names or location can be easily modified by editing the line with the comment. It saved me quite a lot of time so hopefully it could help be some help for any of you in any way.

Additional Note (1, June, 2011)

Added a simple example that exports .png files from multiple .fla files in a specified directory (tested on Flash CS4 / CS5.5 on Mac OSX 10.6)

Download Demo Files

現在開いている.flaの各フレームから連番で.pngを書き出す超シンプルな.jsflスニペット、メモとして一応あげておきますね(Flash CS3とCS4で動作確認)。

Download Demo Files

実際"Export" -> "Export Movie"から.pngを連番で書き出せばいい話なのですが、jsflでならどのタイムラインからでも書き出せたり(Export Movieでもできました、知らなかったorz)、名前のコントロールが柔軟だったり、ダイアログなしで一発で終わるようにショートカットをあてがえたり、より複雑なバッチ処理にも使えたりするのがいいんじゃないかと思います。


  1. イメージ書き出し元の.flaを開く(デモでは "ExportImagesTest.fla")。
  2. "コマンド" -> "コマンドの実行"を選び、"_ExportImages.jsfl"を開く。

Running JSFL files (Adobe Livedocs)


追記 (1, June, 2011)

指定したディレクトリにある複数の.flaから.pngファイルをExportする.jsflのサンプルを追加しました (tested on Flash CS4 / CS5.5 on Mac OSX 10.6)

Download Demo Files

The other day I wanted to emphasize all the numbers in HTML text dynamically with JavaScript for some reason. First it was quite simple enough even to my RegEx-dummy brain. I just wrote something like the following;

function emphasizeNumbers(){
  var elmText = document.getElementById("text");
  elmText.innerHTML = elmText.innerHTML.replace(/(\d)/g, "<em>$1</em>");
  return false;

<p id="text">You have finished 3 lessons. Your score was 80/100. This is end of Stage 1. Please proceed to Stage 2. (By the way my number is 012-345-6789).</p>

So far it was simple enough. However when I looked at the consequence, I noticed that we did not want to emphasize the numbers followed by the word "Stage", as in "1" in "Stage 1" and "2" in "Stage 2". And I did not know the way how to exclude only these from the RegEx matches to be replaced.

Without too much consideration, first I tried the following;

function emphasizeNumbers(){
  var elmText = document.getElementById("text");
  elmText.innerHTML = elmText.innerHTML.replace(/[^(Stage )](\d)/g, "<em>$1</em>");
  return false;

Here I tried to mean "match with any digits which are preceded by anything other than the string 'Stage ' (as well as trying to exclude the grouped characters 'Stage ' from back-references)". However the result was miserable. Honestly I still cannot even explain what exactly happened here. Anyways, I understood that grouping with parenthesis ("()") in character class square bracket("[]") does not work (does it?).

After a while of googling, I found that there is an RegEx expression called "negative lookbehind". It took me about an hour to even vaguely understand the concept, but this seemed to be the answer. So anyways, I tried the following just mimicking the tutorial page;

function emphasizeNumbers(){
  var elmText = document.getElementById("text");
  elmText.innerHTML = elmText.innerHTML.replace(/[^(?<!Stage )(\d)/g, "<em>$1</em>");
  return false;

It did not work at all and ended up in a JavaScript error. Soon after that, I found that I missed out one important line in the tutorial page;

Finally, flavors like JavaScript, Ruby and Tcl do not support lookbehind at all, even though they do support lookahead.
OK great, (negative) lookbehind is NOT supported in current JavaScript (as of 2010 Jan, JavaScript 1.8.1) RegEx.

After all, I resolved the problem by doing the following.

function emphasizeNumbers(){
  var elmText = document.getElementById("text");
  elmText.innerHTML = elmText.innerHTML.replace(/(?:Stage\s)?(\d)/g, function(str, p1){
    if(str.indexOf("Stage ")!=-1) return str;
    else return "<em>" + p1 + "</em>";
  return false;

This finally worked. I did not know that the String.replace method accepts a function instead of a replacing string as the second parameter.
String.replace (MDC Core JavaScript 1.5 reference) - Specifying a function as a parameter

However I'm not sure if this is the best solution - is there better and easier way to do the same?