Kostya's Boring Codec World

After investigating the smallest available pile of fossilised dung called Go2Cesspit (only 2.5MB instead of 15MB for the current version) the G2M1 can be reconstructed. It had the same tiled structure as its successors but it coded all tiles with ELS only, no combining with JPEG data.

And the full history of Go2UnwantedPlaces evolution (there definitely was no intelligent design for obvious reasons):

1. Citrix licenses image coding from Accusoft (ELS-based), uses it to release G2M1.
2. They want to improve compression and try to code some blocks in the different way. JPEG to the rescue! That’s how G2M2 was born (compression method 2).
3. G2M3 looks like marketing bump since image coding has not been changed.
4. For some reasons they replace ELS part with simple deflated raw bitmap. That’s G2M4 now (and compression method 3).

Further findings may correct this system of course but so far it looks like this.

P.S. If you want to have G2M1 supported then send samples and support requests to VideoLAN. They will be grateful for sure.

This entry was posted on Thursday, February 14th, 2013 at 2:31 am and is filed under Go2Meeting. You can follow any responses to this entry through the RSS 2.0 feed. Both comments and pings are currently closed.