Rehuff: Difference between revisions
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svn co http://svn.xiph.org/trunk/theora-exp/ | svn co http://svn.xiph.org/trunk/theora-exp/ | ||
* Compile rehuff code: | * Compile rehuff code: | ||
cd theora-exp/unix | cd theora-exp | ||
./autogen.sh | |||
cd unix | |||
make rehuff | make rehuff | ||
* Use it: | * Use it: | ||
./rehuff [-s <statsout.txt> ] <infile.ogg> <outfile.ogg> | ./rehuff [-s <statsout.txt> ] <infile.ogg> <outfile.ogg> | ||
== A try on | == A try on r14725 version == | ||
* Current version does not rehuff ogg vorbis files. | * Current version does not rehuff ogg vorbis files. | ||
* Rehuffing is pretty fast. | * Rehuffing is pretty fast. | ||
* Rehuffed files, decoded with dump_video, are the same of the original files. | * Rehuffed files, decoded with dump_video, are the same of the original files. | ||
* Rehuffed files are about 0,4-1,5% smaller than original files. | * Rehuffed files are about 0,4-1,5% smaller than original files. | ||
* However, when played with QuickTime Player, using [http://xiph.org/quicktime/ QuickTime Components], some rehuffed file seem more ''blurred'' at the beginning (e.g., look at the text ''A New Computer'' on the rehuff of this file http://www.polycrystal.org/lego/movies/A_New_Computer--med.ogg). This is not reproducible on VLC, so this may be only a problem of QuickTime Components. | * However, when played with QuickTime Player, using [http://xiph.org/quicktime/ QuickTime Components], some rehuffed file seem more ''blurred'' at the beginning (e.g., look at the text ''A New Computer'' on the rehuff of this file http://www.polycrystal.org/lego/movies/A_New_Computer--med.ogg). This is not reproducible on VLC, so this may be only a problem of QuickTime Components. | ||
[[Category:Vorbis]] | |||
[[Category:Theora]] | |||
Latest revision as of 07:40, 13 April 2008
Vorbis rehuff code
Rehuff was a tool to losslessly compress Vorbis files. Latest rehuff version (see rehuff status), had some limits:
- it's not free software;
- it has a bug causing the rehuffed file can't correctly seek;
- it works only with stereo files.
Theora rehuff code
tterribe, on 2007-05-02 in SVN revision r12913, commited a new rehuff code, which works on Theora streams. The code is included in the svn trunk of theora-exp.
How to get it working
- Get the latest theora-exp:
svn co http://svn.xiph.org/trunk/theora-exp/
- Compile rehuff code:
cd theora-exp ./autogen.sh cd unix make rehuff
- Use it:
./rehuff [-s <statsout.txt> ] <infile.ogg> <outfile.ogg>
A try on r14725 version
- Current version does not rehuff ogg vorbis files.
- Rehuffing is pretty fast.
- Rehuffed files, decoded with dump_video, are the same of the original files.
- Rehuffed files are about 0,4-1,5% smaller than original files.
- However, when played with QuickTime Player, using QuickTime Components, some rehuffed file seem more blurred at the beginning (e.g., look at the text A New Computer on the rehuff of this file http://www.polycrystal.org/lego/movies/A_New_Computer--med.ogg). This is not reproducible on VLC, so this may be only a problem of QuickTime Components.