^^
Unfortunately the age of that mod impacts compression ratio. If the stdin/stdout and c+d merging was applied to the latest source code, it would be so much better.
Test on a sample jpeg (
source)
Code:
Input size: 9,774,095 bytes
Compression with brunsli compiled here: 7,207,075 bytes
Compression with brunsli mod linked above: 7,247,242 bytes