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Re: [sOT] compression 1 GB downto 100 MB

From "Osmium" <r124c4u102@comcast.net>
Newsgroups comp.lang.c
Subject Re: [sOT] compression 1 GB downto 100 MB
Date 2016-06-16 13:13 -0500
Message-ID <dsg961ForroU1@mid.individual.net> (permalink)
References <98ce3a57-1b36-4430-8050-8e659b5fc4e4@googlegroups.com> <2d2820aa-1540-40ee-99d7-53c5d83c066a@googlegroups.com> <45e68342-2ed9-4877-9e78-4ca0731e9c19@googlegroups.com> <dsg04aFn010U1@mid.individual.net> <c2beb14d-f710-4018-91a1-d33210a6df03@googlegroups.com>

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"fir" wrote:

W dniu czwartek, 16 czerwca 2016 17:49:42 UTC+2 użytkownik Osmium napisał:
> "fir" wrote:
>
> W dniu czwartek, 16 czerwca 2016 17:09:24 UTC+2 użytkownik Malcolm McLean
> napisał:
> > On Thursday, June 16, 2016 at 3:25:42 PM UTC+1, fir wrote:
> > > GOD how great it would be have an algorith that would compress totays
> > > data which rae not much
> > > compressibl;e (like game ISo files, movies, zip archives) like many
> > > times, say ten times
> > >
> > > wouldnt it be great? do you think that it is
> > > possible? (im sure it is not really obtainable but other thing if this
> > > is not impossible 'in fact')
> > >
> > > Imagine how great it would be :U
> > >
> > Unfortunately there are theoretical limits on how far you can compress
> > data without prior
> > information about what that data represents.
> > Movies, for example, are almost certainly already MPEG compressed. That
> > strips out
> > essentially all of the redundancy. The only way of getting better
> > compression is to have
> > a database of all movie clips ever produced (that's not necessarily
> > impractical) and
> > to replace the movies with a reference to that database.
> > You can't just feed the MPEG stream to a general purpose compressor and
> > expect it
> > to compress it. If it were that easy the general purpose compressor 
> > would
> > have already
> > been included in the MPEG standard, and in fact it is - MPEG creates a
> > Huffman-friendly
> > output stream then uses a fairly standard Huffman compressor to achieve
> > the final bit
> > reduction.
>
> I dont think "The only way" is proven - this is probably just false and I
> wouldnt be maybe surprised if there is a way to compres .mpg's 10 times 
> yet
> (but i dont know the details on compression never worked in it) If 
> someonne
> knows maybe what is a source of this impossibility (of compressing .mpgs 
> or
> .iso 10 times) it would be good to discuss it maybe
>
> <end google garble>
>
> I am not at all sure it is a good idea to respond to one of your 
> scribbling.
>
> Nevertheless. Shannon's theory dates to 1948 and it forms a firm 
> theoretical
> base for the work that has come since. One of your "it" candidates is zip
> files.  No, they can not be compressed further by a factor of 10. Most of
> the "good" has already been taken out of the data.
>

prove it

> Movies are more subjective because the compression is loss and therefore 
> how
> compressible they are is subjective.  Surely there is *some* room for
> improvement. in this area - but you are not going to get ten times on a
> hockey game, for example.
>
> https://en.wikipedia.org/wiki/Information_theory

The proof is in the link I posted.  Anyone who has bothered to understand 
Huffman encoding vis a vis a text in English (part of zip) realizes that 
Shannon is on to something.  My guess is you pretty much ignored the link, 
considering the elapsed time between my post and your response. My initial 
guess was right, you are a waste of time.

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Thread

[sOT] compression 1 GB downto 100 MB fir <profesor.fir@gmail.com> - 2016-06-16 07:25 -0700
  Re: [sOT] compression 1 GB downto 100 MB mark.bluemel@gmail.com - 2016-06-16 08:08 -0700
    Re: [sOT] compression 1 GB downto 100 MB Lynn McGuire <lmc@winsim.com> - 2016-06-17 12:04 -0500
      Re: [sOT] compression 1 GB downto 100 MB Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-06-17 10:16 -0700
        Re: [sOT] compression 1 GB downto 100 MB "Chris M. Thomasson" <nospam@nospam.invalid> - 2016-06-17 23:08 -0700
  Re: [sOT] compression 1 GB downto 100 MB Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-06-16 08:09 -0700
    Re: [sOT] compression 1 GB downto 100 MB fir <profesor.fir@gmail.com> - 2016-06-16 08:15 -0700
      Re: [sOT] compression 1 GB downto 100 MB fir <profesor.fir@gmail.com> - 2016-06-16 08:18 -0700
        Re: [sOT] compression 1 GB downto 100 MB mark.bluemel@gmail.com - 2016-06-17 01:28 -0700
          Re: [sOT] compression 1 GB downto 100 MB Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-06-17 02:03 -0700
            Re: [sOT] compression 1 GB downto 100 MB Richard Heathfield <rjh@cpax.org.uk> - 2016-06-17 10:34 +0100
              Re: [sOT] compression 1 GB downto 100 MB BartC <bc@freeuk.com> - 2016-06-17 10:44 +0100
                Re: [sOT] compression 1 GB downto 100 MB Richard Heathfield <rjh@cpax.org.uk> - 2016-06-17 11:03 +0100
                Re: [sOT] compression 1 GB downto 100 MB Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-06-17 03:51 -0700
                Re: [sOT] compression 1 GB downto 100 MB fir <profesor.fir@gmail.com> - 2016-06-18 02:16 -0700
                Re: [sOT] compression 1 GB downto 100 MB fir <profesor.fir@gmail.com> - 2016-06-18 02:29 -0700
                Re: [sOT] compression 1 GB downto 100 MB "Osmium" <r124c4u102@comcast.net> - 2016-06-17 08:19 -0500
                Re: [sOT] compression 1 GB downto 100 MB fir <profesor.fir@gmail.com> - 2016-06-18 03:17 -0700
              Re: [sOT] compression 1 GB downto 100 MB Gareth Owen <gwowen@gmail.com> - 2016-06-17 18:32 +0100
      Re: [sOT] compression 1 GB downto 100 MB Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-06-16 08:43 -0700
        Re: [sOT] compression 1 GB downto 100 MB fir <profesor.fir@gmail.com> - 2016-06-16 08:48 -0700
      Re: [sOT] compression 1 GB downto 100 MB "Osmium" <r124c4u102@comcast.net> - 2016-06-16 10:49 -0500
        Re: [sOT] compression 1 GB downto 100 MB fir <profesor.fir@gmail.com> - 2016-06-16 09:10 -0700
          Re: [sOT] compression 1 GB downto 100 MB Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-06-16 09:36 -0700
            Re: [sOT] compression 1 GB downto 100 MB Keith Thompson <kst-u@mib.org> - 2016-06-16 11:18 -0700
          Re: [sOT] compression 1 GB downto 100 MB "Osmium" <r124c4u102@comcast.net> - 2016-06-16 13:13 -0500
            Re: [sOT] compression 1 GB downto 100 MB Gareth Owen <gwowen@gmail.com> - 2016-06-16 20:18 +0100
              Re: [sOT] compression 1 GB downto 100 MB Richard Heathfield <rjh@cpax.org.uk> - 2016-06-16 22:07 +0100
                Re: [sOT] compression 1 GB downto 100 MB Gareth Owen <gwowen@gmail.com> - 2016-06-17 06:04 +0100
              Re: [sOT] compression 1 GB downto 100 MB Robert Wessel <robertwessel2@yahoo.com> - 2016-06-16 23:21 -0500
                Re: [sOT] compression 1 GB downto 100 MB "Osmium" <r124c4u102@comcast.net> - 2016-06-17 07:49 -0500
                Re: [sOT] compression 1 GB downto 100 MB Robert Wessel <robertwessel2@yahoo.com> - 2016-06-17 12:47 -0500
                Re: [sOT] compression 1 GB downto 100 MB "Osmium" <r124c4u102@comcast.net> - 2016-06-17 14:47 -0500
                Re: [sOT] compression 1 GB downto 100 MB Robert Wessel <robertwessel2@yahoo.com> - 2016-06-17 23:32 -0500
                Re: [sOT] compression 1 GB downto 100 MB fir <profesor.fir@gmail.com> - 2016-06-18 01:33 -0700
            Re: [sOT] compression 1 GB downto 100 MB fir <profesor.fir@gmail.com> - 2016-06-17 14:51 -0700
      Re: [sOT] compression 1 GB downto 100 MB BartC <bc@freeuk.com> - 2016-06-16 16:50 +0100
        Re: [sOT] compression 1 GB downto 100 MB BartC <bc@freeuk.com> - 2016-06-17 16:20 +0100
    Re: [sOT] compression 1 GB downto 100 MB fir <profesor.fir@gmail.com> - 2016-06-16 08:34 -0700
  Re: [sOT] compression 1 GB downto 100 MB Les Cargill <lcargill99@comcast.com> - 2016-06-16 12:55 -0500
  Re: [sOT] compression 1 GB downto 100 MB "Chris M. Thomasson" <nospam@nospam.invalid> - 2016-06-16 11:53 -0700
    Re: [sOT] compression 1 GB downto 100 MB "Chris M. Thomasson" <nospam@nospam.invalid> - 2016-06-16 12:14 -0700
    Re: [sOT] compression 1 GB downto 100 MB "Chris M. Thomasson" <nospam@nospam.invalid> - 2016-06-17 12:33 -0700
      Re: [sOT] compression 1 GB downto 100 MB "Chris M. Thomasson" <nospam@nospam.invalid> - 2016-06-17 12:46 -0700
    Re: [sOT] compression 1 GB downto 100 MB fir <profesor.fir@gmail.com> - 2016-06-17 15:04 -0700
      Re: [sOT] compression 1 GB downto 100 MB "Chris M. Thomasson" <nospam@nospam.invalid> - 2016-06-17 22:55 -0700
        Re: [sOT] compression 1 GB downto 100 MB fir <profesor.fir@gmail.com> - 2016-06-18 01:38 -0700
          Re: [sOT] compression 1 GB downto 100 MB BartC <bc@freeuk.com> - 2016-06-18 10:41 +0100
            Re: [sOT] compression 1 GB downto 100 MB fir <profesor.fir@gmail.com> - 2016-06-18 02:55 -0700
            Re: [sOT] compression 1 GB downto 100 MB Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-06-18 05:08 -0700
              Re: [sOT] compression 1 GB downto 100 MB "Bill Cunningham" <nospam@nspam.invalid> - 2016-06-18 15:11 -0400
                Re: [sOT] compression 1 GB downto 100 MB "Bill Cunningham" <nospam@nspam.invalid> - 2016-06-18 15:13 -0400
                Re: [sOT] compression 1 GB downto 100 MB luser droog <luser.droog@gmail.com> - 2016-06-18 12:43 -0700
                Re: [sOT] compression 1 GB downto 100 MB Richard Heathfield <rjh@cpax.org.uk> - 2016-06-18 20:43 +0100
                Re: [sOT] compression 1 GB downto 100 MB "Chris M. Thomasson" <nospam@nospam.invalid> - 2016-06-18 12:53 -0700
                Re: [sOT] compression 1 GB downto 100 MB "Chris M. Thomasson" <nospam@nospam.invalid> - 2016-06-20 20:32 -0700
                Re: [sOT] compression 1 GB downto 100 MB Keith Thompson <kst-u@mib.org> - 2016-06-18 13:22 -0700
                Re: [sOT] compression 1 GB downto 100 MB Jerry Stuckle <jstucklex@attglobal.net> - 2016-06-18 16:35 -0400
                Re: [sOT] compression 1 GB downto 100 MB Jerry Stuckle <jstucklex@attglobal.net> - 2016-06-18 21:37 -0400
                Re: [sOT] compression 1 GB downto 100 MB "James R. Kuyper" <jameskuyper@verizon.net> - 2016-06-18 16:59 -0400
                Re: [sOT] compression 1 GB downto 100 MB crisdunbar@gmail.com - 2016-06-20 09:55 -0700
                Re: [sOT] compression 1 GB downto 100 MB Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-06-20 21:22 +0100
                Re: [sOT] compression 1 GB downto 100 MB cris <crisdunbar@gmail.com> - 2016-06-20 17:13 -0700
                Re: [sOT] compression 1 GB downto 100 MB Tim Rentsch <txr@alumni.caltech.edu> - 2016-06-21 10:42 -0700
                Re: [sOT] compression 1 GB downto 100 MB Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-06-21 20:09 +0100
                Re: [sOT] compression 1 GB downto 100 MB crisdunbar@gmail.com - 2016-06-21 13:39 -0700
                Re: [sOT] compression 1 GB downto 100 MB Keith Thompson <kst-u@mib.org> - 2016-06-22 08:34 -0700
                Re: [sOT] compression 1 GB downto 100 MB Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-06-22 19:48 +0100
                Re: [sOT] compression 1 GB downto 100 MB Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-06-19 01:37 +0100
                Re: [sOT] compression 1 GB downto 100 MB Richard Heathfield <rjh@cpax.org.uk> - 2016-06-19 02:22 +0100
                Re: [sOT] compression 1 GB downto 100 MB Jerry Stuckle <jstucklex@attglobal.net> - 2016-06-18 21:30 -0400
                Re: [sOT] compression 1 GB downto 100 MB Richard Heathfield <rjh@cpax.org.uk> - 2016-06-19 02:41 +0100
                Re: [sOT] compression 1 GB downto 100 MB Jerry Stuckle <jstucklex@attglobal.net> - 2016-06-18 21:55 -0400
                Re: [sOT] compression 1 GB downto 100 MB Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-06-19 03:20 +0100
                Re: [sOT] compression 1 GB downto 100 MB fir <profesor.fir@gmail.com> - 2016-06-19 02:53 -0700
                Re: [sOT] compression 1 GB downto 100 MB Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-06-18 16:05 -0700
                Re: [sOT] compression 1 GB downto 100 MB "J. Clarke" <j.clarke.873638@gmail.com> - 2016-06-19 06:59 -0400
                Re: [sOT] compression 1 GB downto 100 MB fir <profesor.fir@gmail.com> - 2016-06-19 05:55 -0700
                Re: [sOT] compression 1 GB downto 100 MB Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-06-19 06:13 -0700
                Re: [sOT] compression 1 GB downto 100 MB "J. Clarke" <j.clarke.873638@gmail.com> - 2016-06-26 12:26 -0400
                Re: [sOT] compression 1 GB downto 100 MB Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-06-26 09:53 -0700
              Re: [sOT] compression 1 GB downto 100 MB Richard Heathfield <rjh@cpax.org.uk> - 2016-06-18 20:41 +0100
              Re: [sOT] compression 1 GB downto 100 MB "J. Clarke" <j.clarke.873638@gmail.com> - 2016-06-19 06:45 -0400
            Re: [sOT] compression 1 GB downto 100 MB Robert Wessel <robertwessel2@yahoo.com> - 2016-06-18 14:42 -0500
            Re: [sOT] compression 1 GB downto 100 MB gordonb.vnsk1@burditt.org (Gordon Burditt) - 2016-06-20 01:13 -0500
              Re: [sOT] compression 1 GB downto 100 MB Keith Thompson <kst-u@mib.org> - 2016-06-20 12:16 -0700
                Re: [sOT] compression 1 GB downto 100 MB David Brown <david.brown@hesbynett.no> - 2016-06-20 21:27 +0200
                Re: [sOT] compression 1 GB downto 100 MB Xaltonon <xaltonon@gmail.com> - 2016-06-20 21:25 -0700

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