CorePack Compression methods ? Help

[FitGirl]

Typical Corepack string looks like this, afair:

srep+delta+lzma:177mb:fb273:lc8

It's generic and well-known, aside of using delta, which should never be used by default, as it make compression worse in 90% of cases, make it slightly better in 8% of cases and only in 2% of cases gives noticeable compression gain with LZMA. These numbers based on my huge bruteforcing database I build through my repacking.

I told about it to Shiv in the beginning of 2015, but he doesn't like to learn, so the delta is still in there.

So if you copied your compression string with delta from someone else - get rid of it and never use blindly. Delta is a very specific byte-mixing filter, which can help only with certain types of data.

And yes, as stated above, CP's "records" are build on ripping data, not on actual compression.

[aswadd]

Originally Posted by FitGirl

Typical Corepack string looks like this, afair:

srep+delta+lzma:177mb:fb273:lc8

It's generic and well-known, aside of using delta, which should never be used by default, as it make compression worse in 90% of cases, make it slightly better in 8% of cases and only in 2% of cases gives noticeable compression gain with LZMA. These numbers based on my huge bruteforcing database I build through my repacking.

I told about it to Shiv in the beginning of 2015, but he doesn't like to learn, so the delta is still in there.

So if you copied your compression string with delta from someone else - get rid of it and never use blindly. Delta is a very specific byte-mixing filter, which can help only with certain types of data.

And yes, as stated above, CP's "records" are build on ripping data, not on actual compression.

what do you mean by worse ?? do you mean compression ratio or speed of de/compressing ??

[FitGirl]

Originally Posted by aswadd

what do you mean by worse ?? do you mean compression ratio or speed of de/compressing ??

Compression ratio only. De(compression) is almost the same, this operation is not mathematically heavy.

[zoroX]

Originally Posted by FitGirl

And yes, as stated above, CP's "records" are build on ripping data, not on actual compression.

Pffff, you hate CorePack, just say that directly.

[aswadd]

Originally Posted by zoroX

Pffff, you hate CorePack, just say that directly.

Me too , I don't know what is the reason but i don't like them Maybe 1 year ago I download a 20 GB repack & what it was corrupted !! As for someone from EGYPT to download 20 GB is taking about 7 days X 15 hour Downloading

[TheGeekyGamer]

Originally Posted by aswadd

Me too , I don't know what is the reason but i don't like them Maybe 1 year ago I download a 20 GB repack & what it was corrupted !! As for someone from EGYPT to download 20 GB is taking about 7 days X 15 hour Downloading

Yeah that's true CorePack messed up with GTA V badly too... i wasted 27 GB of data.. lol