Batch Encoding Mp3's with LAME

LAME is a great little command-line mp3 encoder. I found this script online somewhere (sorry, no idea where), and tweaked it a bit, so that it creates an mp3s folder, ecodes at highest quality, strips extensions from filenames, and works with aifs and wavs (have only tested it with aifs so far though.)

You can save this as encoder.sh, or whatever, cd into the directory you want to encode, and run it.

Here it is:

mkdir mp3
find . -name "*.wav" -o -name "*.aif"  | while read FILE
do
  echo $FILE
 lame -b 320 -h  $f "$FILE" mp3/"${FILE%.*}".mp3
done

IE performance

Trying to get my table to draw really fast in IE. So far, the fastest way seems to be this:

var frag = $(document.createDocumentFragment());
builtContent = "";
for(var i = 0; i < LOOPSIZE; i++){
builtContent += CONTENT;
}
frag.append(builtContent);
$(testTable).append(frag);


Building a giant html string and adding it is like 3x as fast as doing it row by row.

Here's my test page:

$(document).ready(function(){

var LOOPSIZE = 100;
var CONTENT = "hello! ";

var testTable = $("#testTable");



Util.logger.startTimer("$(.append)");
for(var i = 0; i < LOOPSIZE; i++){
$("#testTable").append(CONTENT);
}
Util.logger.stopTimer("$(.append)");



Util.logger.startTimer("frag");
var frag = $(document.createDocumentFragment());

for(var i = 0; i < LOOPSIZE; i++){
frag.append(CONTENT);
}
testTable.get(0).appendChild( frag.get(0) );

Util.logger.stopTimer("frag")




Util.logger.startTimer("frag+innerHTML");
var frag = $(document.createDocumentFragment());
builtContent = "";
for(var i = 0; i < LOOPSIZE; i++){
builtContent += CONTENT;
}
frag.append(builtContent);
testTable.get(0).appendChild( frag.get(0) );

Util.logger.stopTimer("frag+innerHTML");




Util.logger.startTimer("$(testTable).append(frag)");
var frag = $(document.createDocumentFragment());
builtContent = "";
for(var i = 0; i < LOOPSIZE; i++){
builtContent += CONTENT;
}
frag.append(builtContent);
$(testTable).append(frag);

Util.logger.stopTimer("$(testTable).append(frag)");





Util.logger.startTimer("frag+innerHTMLARR");
var frag = $(document.createDocumentFragment());
builtContentArr = [];
for(var i = 0; i < LOOPSIZE; i++){
builtContentArr.push(CONTENT);
}
frag.append(builtContentArr.join());
testTable.get(0).appendChild( frag.get(0) );

Util.logger.stopTimer("frag+innerHTMLARR");



Util.logger.startTimer("innerHTML");
builtContent = "";
for(var i = 0; i < LOOPSIZE; i++){
builtContent += CONTENT;
}
testTable.append(builtContent);

Util.logger.stopTimer("innerHTML");

Util.logger.printTimes();

and the results


IE6

24:3:773 Timer: $(.append) total elapsed time is 469 ms.

24:3:789 Timer: frag total elapsed time is 359 ms.

24:3:789 Timer: frag+innerHTML total elapsed time is 187 ms.

24:3:805 Timer: $(testTable).append(frag) total elapsed time is 172 ms.

24:3:805 Timer: frag+innerHTMLARR total elapsed time is 188 ms.

24:3:820 Timer: innerHTML total elapsed time is 172 ms.


Firefox

23:35:797 Timer: $(.append) total elapsed time is 114 ms.

23:35:800 Timer: frag total elapsed time is 77 ms.

23:35:803 Timer: frag+innerHTML total elapsed time is 17 ms.

23:35:805 Timer: $(testTable).append(frag) total elapsed time is 18 ms.

23:35:807 Timer: frag+innerHTMLARR total elapsed time is 23 ms.

23:35:808 Timer: innerHTML total elapsed time is 34 ms.