Better compression for VobSub subtitles (idx+sub)?

[ydobon]

Hello,

I don't know how to contact with the author of VobSub, but I'd like to suggest that VobSub accepts compression formats for the .sub file other than RAR.

For example, I compressed a 13.0 MB .sub file if format 7z (www.7-zip.org) and I got a 1.45 MB file (2.30 with RAR maximum compression).

Also 7-zip is GPLed and WinRAR is shareware.


Regards,

[gnr]

Well i m not sure about about it....tried 7zip but i have to tell u its not giving me smaller file than rar. try different compression settings like 4096kb dictionary size, force text and audio compression, create solid archive ..... etc.
good luck

[ydobon]

With WinRAR I already use maximum compression parameters (-m5 and 4 MB dictionary, solid doesn't help as it's just one .sub file).

I forgot to say I used the PPMd method of compression in 7-zip (also "ultra" compression level and 1GB dictionary). It gives the best compression on several .sub files I've tried.


Regards,

[gnr]

right it gives abit better result but it has less options (i know those are not required for compressing subs) and not that much popular.