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From: J Newman <jenniferkatenewman@gmail.com>
Newsgroups: comp.os.linux.misc
Subject: Re: Script to conditionally find and compress files recursively
Date: Thu, 13 Jun 2024 12:43:43 +0800
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On 12/06/2024 11:21, Grant Taylor wrote:
> On 6/11/24 01:53, J Newman wrote:
>> Any suggestions on how to proceed?
> 
> As others have said, it's very difficult to tell within the first five 
> seconds what the ultimate compression ratio will be.
> 
> If you have the disk space, compress using all of the compression 
> options and then remove all but the smallest file.
> 
> Then go on to the next file.
> 
> 
> 

It's true that you cannot tell within the first 5 seconds what the 
ultimate compression ratio will be, but it seems to me (from compressing 
avi/mp4/mov files with lzma -9evv) that you can tell within +/- 5% to a 
high degree of confidence, what the ultimate compression ratio will be 
given the first 5 seconds.