Tuesday, January 2, 2007

FLV Audio Extractor

Many programs that download videos from, say, YouTube or Google Video to your computer, often download them in the form of a .FLV file. A lot of times, though, we want to rip the music from that video into MP3 form, etc... so the following program does just that - extracts audio from FLV's into separate files. This is far from a consumer version, first of all it is a command-line tool!

Usage is:
FLV_AudioExtract [input] [output].

For example:
FLV_AudioExtract sample_video.flv sample_video_music.mp3

The audio format may not always be MP3 - be sure to check the "Dominant format: ..." field, it will have something like mono 22 kHz mp3, which is the audio format.

Without further ado: http://www.box.net/public/dbzb0th7qt

Also included is a tag viewer for FLV files. I'm sure it will be self-explanatory. Big thanks to http://www.osflash.org for reverse engineering the FLV format!

Friday, December 15, 2006

Yahoo! Widgets Issue



I was logging into my Yahoo! Widgets(r) notepad one day when this happened... looks like someone forgot to fill in the default names!

Actually, this has never happened again, so I suppose it was due to my choppy internet connection... oh well.

Amino Acid Translation

While browsing NCBI's protein section of genome sequences, many of the protein amino acid sequences are in a cryptic one-letter code form, for example:

mapkksttkt

So, in order to make my reading experience a little more enjoyable, I've created a small program to translate that into a more readable sequence form, i.e.:

met- ala- pro- lys- lys-

Executable is available here: http://www.box.net/public/yyfm1c0yz6
Source in C++ is here: http://www.box.net/public/v7sy390g2e

Sunday, December 10, 2006

Fruity Loops

I'm back again! A bit of fooling around with FL Studio 6 came up with the following clips:

Adelix's Nightmare
Sum Of Lore

I'll admit, they're both pretty mediocre, but...

Wednesday, November 29, 2006

Linear Regression

Another proof-of-concept application involving a form of statistical line-fitting. Once again, you'll need the .NET 2.0 Framework to run this.

Update 11/30: program now includes correlation calculations
http://www.box.net/public/1mm1ybz4cl

Chaos Theory

Simple population growth isn't so simple if you extrapolate far enough! Chaos Theory is a small experiment to test out a common growth equation. Turn up the grwoth rate and be amazed (if you don't already know what Chaos Theory is!).

It may ask you for VB300.DLL (or something similar like that) to run depending on your system, a quick Google search will yield several downloads for that file.

http://www.box.net/public/3uy6yh6dme

Source code is written in Visual Basic 6:
http://www.box.net/public/7qp613jx7d

Tuesday, November 28, 2006

Automated Spanish Homework

To save a bit of time looking up my Spanish homework, I wrote a program to do it automatically for the current day.

Not portable - if my Spanish teacher decides in any way to change the way she lists her homework, the program will be broken; requires Windows XP or 2000 with .NET Framework 2.0 to run.

http://www.box.net/public/465pv769p0