CompuServe RLE
From Just Solve the File Format Problem
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| − | '''CompuServe RLE''' is a bi-level image format that was used by the CompuServe on-line service. In some ways, it is the predecessor of [[GIF]]. | + | '''CompuServe RLE''' is a bi-level image format that was used by the [[CompuServe]] on-line service. In some ways, it is the predecessor of [[GIF]]. |
The image dimensions are either 128×96 or 256×192. Images are [[Run-length encoding|RLE-compressed]]. | The image dimensions are either 128×96 or 256×192. Images are [[Run-length encoding|RLE-compressed]]. | ||
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== Software == | == Software == | ||
* [[Netpbm]] (starting with version 10.48): cistopbm, pbmtocis | * [[Netpbm]] (starting with version 10.48): cistopbm, pbmtocis | ||
| + | * [[Tom's Editor]] | ||
== Sample files == | == Sample files == | ||
* [http://www.classiccmp.org/cpmarchives/trs80/Software/Model%204/A/Assorted%20RLE%20Files%20(19xx)(Author%20Unknown)%5bRLE%5d.zip Assorted RLE Files.zip] | * [http://www.classiccmp.org/cpmarchives/trs80/Software/Model%204/A/Assorted%20RLE%20Files%20(19xx)(Author%20Unknown)%5bRLE%5d.zip Assorted RLE Files.zip] | ||
| + | * ftp://8bitfiles.net/archives/compuserve-file-archive/22%20Graphics%20&%20Utilities/ → *.RLE | ||
== Resources == | == Resources == | ||
* [http://staticweb.rasip.fer.hr/research/compress/algorithms_run-length_coding.htm#examples CompuServe standard for RLE file format] | * [http://staticweb.rasip.fer.hr/research/compress/algorithms_run-length_coding.htm#examples CompuServe standard for RLE file format] | ||
Revision as of 16:31, 22 April 2018
CompuServe RLE is a bi-level image format that was used by the CompuServe on-line service. In some ways, it is the predecessor of GIF.
The image dimensions are either 128×96 or 256×192. Images are RLE-compressed.
Files consist entirely of ASCII characters, though some are control characters.
Contents |
Identification
Files begin with bytes 0x1B 0x47 0x4D (128×96) or 0x1B 0x47 0x48 (256×192).
Software
- Netpbm (starting with version 10.48): cistopbm, pbmtocis
- Tom's Editor
Sample files
- Assorted RLE Files.zip
- ftp://8bitfiles.net/archives/compuserve-file-archive/22%20Graphics%20&%20Utilities/ → *.RLE
