oshash/README

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oshash - Print oshash for files.
Hash code is based on Media Player Classic.
In natural language it calculates:
size + 64bit chksum of the first and last 64k
(even if they overlap because the file is smaller than 128k).
This hash can be used to check for subtitles on opensubtitles.org
http://trac.opensubtitles.org/projects/opensubtitles/wiki/MovieIdentification