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Re: [rdiff-backup-users] Backing up sound files

From: Dominic Raferd
Subject: Re: [rdiff-backup-users] Backing up sound files
Date: Thu, 25 Jul 2013 07:47:17 +0100
User-agent: Mozilla/5.0 (X11; Linux i686; rv:17.0) Gecko/20130623 Thunderbird/17.0.7

On 25/07/13 03:19, Jeffrey Barish wrote:

On Thursday, 25 July 2013 12:06:43 you wrote:

From: "Jeffrey Barish" <address@hidden>

I would like to use rdiff-backup to back up sound files (among others). Some of the files could be as large as 0.5 GB or more. I am worried about how rdiff- backup handles files of this size. I think that performing a diff would waste
time and disk space.

Hi Jeffrey,

we frequently backup files larger than this all the time. It is reasonably efficient, as diffs are compressed. Is the audio already compressed?


Dave Kempe

Yes, the audio is already compressed. Usually the sound files are encoded using FLAC.


See this option (from the man page http://www.nongnu.org/rdiff-backup/rdiff-backup.1.html):

   *--no-compression-regexp*   *regexp*
              Do  not compress increments based on files whose filenames match
              regexp.  The default includes many common  audiovisual  and  ar-
              chive files, and may be found in Globals.py.

HTH, Dominic

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