A small freedom area.

1

Understanding selective coloring in Adobe Photoshop

Sat 07 Jan 2017

Photoshop has many interesting color filters, most of them being perfidiously documented such that you can understand how to use...

ffmpeg, reverse, algo, av

High quality GIF with FFmpeg

Mon 16 Mar 2015

About two years ago, I tried to improve the support of the GIF encoding in FFmpeg to make it at...

fun, gif, ffmpeg, av

Butchering HQX scaling filters

Sat 21 Jun 2014

The [HQX filters][wphqx], namely hq2x, hq3x and hq4x, are well-known pixel art scalers. They are mainly used by old console...

algo, prog, reverse, fun, av, ffmpeg

Fun and canny optim for a Canny Edge Detector

Sat 08 Sep 2012

The *canny edge detector* is likely the most commonly implemented edge detection algorithm. It's generally a nice filter to write...

fun, trick, prog, algo, ffmpeg, av

The FFmpeg/Libav situation

Sat 30 Jun 2012

One year and a half ago, an important part of FFmpeg developers decided to change the way the project was...

ffmpeg, libav, av

LAS Lossy Audio Spotter

Tue 09 Aug 2011

`FLAC` is supposed to be a lossless codec. Actually it is, but the source might not be. Stupid people, or...

music, audio analysis, prog, ffmpeg, fft, av