Why my Advanced Zip Repairer can’t recover my files 100%?

Hello,
I'm using advanced zip repairer pro. I have a corrupted zip file which contains a 1.5GB movie and some txt & srt files.
But after recovering 1GB it showed failed notice.
I can't understand the problem. Is there any size limit?
As far I know it can recover up to 4GB.
Please help me out.
Thanks.
