[FFmpeg-devel] a64 encoder

Bitbreaker/METALVOTZE bitbreaker
Fri Jan 16 19:38:55 CET 2009

> You should be calculating the set of chars per frame or video and not
> hardcode them.
In case of multicolor mode, i calculate an optimized charset of 256 
chars that cover 4000 blocks from the original 4 frames (thus having a 
bit of quality loss). In case of Petscii i make use of the C64 charset 
only (that the c64 has in its ROM furthermore), and not building any 
dynamic charset on my own, so i can forgo on also putting a charset into 
the video itself, and therefore add additional color information. 
However in that case i need all origional characters from the c64 to be 
able to compare them with each block of the picture.
In case of ecmh mode i also rely on a static charset, but especially 
prepared for maximum quality.
So having several ways for encoding is part of the idea.

Kindest regards,


More information about the ffmpeg-devel mailing list