Jory Stone's Place

CorePNG is a lossless codec based on PNG. Essentially, each frame is compressed as a PNG, so if PNG does it, this codec does too. (RGBA) This codec also has the ability to write P frames and to autodetect when it should. The P frame takes the difference of the previous frame and the current frame and encodes that as a PNG.

CorePNG was originally developed for use with the subtitles, it compresses cartoons and CGI very well and in many cases better than Huffyuv and Loco at the expense of time.

Download
CorePNG-VFW-v0.8.2 Installer (with Source Code) (427KB)
png2avi2png (89KB)

Compression Tests
Using a 31.44 second DivX 3 Simpsons clip.
01:47.265 - 02:18.472 S03E17 - 8F13 Homer at the Bat
512x384 pixels
31.44 seconds
752 frames
No audio

RGB24 Comparison
158,184KB	Huffyuv
131,190KB	Loco
130,582KB	All I frames Fastest
113,192KB	All I frames Normal
109,812KB	All I frames Best
73,654KB	2 P frames Normal
61,868KB	100 P frames Fastest
50,369KB	100 P frames Normal
49,189KB	100 P frames Best
40,603KB	1000 P frames Best with Auto-Delta frames