Re: Script to conditionally find and compress files recursively

From	D <nospam@example.net>
Newsgroups	comp.os.linux.misc
Subject	Re: Script to conditionally find and compress files recursively
Date	2024-06-13 11:55 +0200
Organization	i2pn2 (i2pn.org)
Message-ID	<909e65ae-69f4-8619-e563-7d6565a48bc3@example.net> (permalink)
References	<v48s96$u6fg$1@dont-email.me> <v4b46s$7dh$1@tncsrv09.home.tnetconsulting.net> <v4dtdt$23kjq$1@dont-email.me> <sm05xudwc1b.fsf@lakka.kapsi.fi>

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On Thu, 13 Jun 2024, Anssi Saari wrote:

> J Newman <jenniferkatenewman@gmail.com> writes:
>
>> 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.
>
> Well then, I believe the solution was already posted. Grab 5% of your
> files with dd and see how it compresses.
>
> I'm a little curious, what kind of space savings do you expect to get by
> doing this? And wouldn't it make more sense to re-encode for lower
> bitrate if space saving is your goal?
>

If it's about space saving, don't forget deduplication, alternatively, 
depending on yoru file system of choice, you could maybe use file system 
functionality to save space as well, but caveat emptor, always have off 
site (or off machine) backups.

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Thread

Script to conditionally find and compress files recursively J Newman <jenniferkatenewman@gmail.com> - 2024-06-11 14:53 +0800
  Re: Script to conditionally find and compress files recursively D <nospam@example.net> - 2024-06-11 10:51 +0200
  Re: Script to conditionally find and compress files recursively Joe Beanfish <joebeanfish@nospam.duh> - 2024-06-11 14:58 +0000
  Re: Script to conditionally find and compress files recursively Grant Taylor <gtaylor@tnetconsulting.net> - 2024-06-11 22:21 -0500
    Re: Script to conditionally find and compress files recursively Richard Kettlewell <invalid@invalid.invalid> - 2024-06-12 08:17 +0100
      Re: Script to conditionally find and compress files recursively D <nospam@example.net> - 2024-06-12 10:13 +0200
        Re: Script to conditionally find and compress files recursively J Newman <jenniferkatenewman@gmail.com> - 2024-06-13 12:46 +0800
          Re: Script to conditionally find and compress files recursively D <nospam@example.net> - 2024-06-13 11:55 +0200
            Re: Script to conditionally find and compress files recursively Grant Taylor <gtaylor@tnetconsulting.net> - 2024-06-13 22:35 -0500
              Re: Script to conditionally find and compress files recursively D <nospam@example.net> - 2024-06-14 11:07 +0200
    Re: Script to conditionally find and compress files recursively J Newman <jenniferkatenewman@gmail.com> - 2024-06-13 12:43 +0800
      Re: Script to conditionally find and compress files recursively Anssi Saari <anssi.saari@usenet.mail.kapsi.fi> - 2024-06-13 10:13 +0300
        Re: Script to conditionally find and compress files recursively D <nospam@example.net> - 2024-06-13 11:55 +0200
        Re: Script to conditionally find and compress files recursively not@telling.you.invalid (Computer Nerd Kev) - 2024-06-14 09:06 +1000
          Re: Script to conditionally find and compress files recursively not@telling.you.invalid (Computer Nerd Kev) - 2024-06-14 12:25 +1000
  Re: Script to conditionally find and compress files recursively J Newman <jenniferkatenewman@gmail.com> - 2024-06-15 11:30 +0800

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