0f4805b64e
bridge the gap between mplayer/gocr and full text subtitle extraction, some manpages, and a sample shell script that can perform subtitle extraction.
52 lines
1.2 KiB
Groff
52 lines
1.2 KiB
Groff
.\" $OpenBSD: sub2pgm.1,v 1.1.1.1 2007/01/22 13:55:42 espie Exp $
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.\" Public domain
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.Dd January 20, 2007
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.Dt SUB2PGM 1
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.Os
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.Sh NAME
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.Nm sub2pgm
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.Nd "convert vobsub dvd subtitles into pgm files and srt template"
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.Sh SYNOPSIS
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.Nm
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.Op Fl hd
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.Op Fl o Ar srtbase
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.Op Fl t Ar sid
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.Ar vobsub
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.Sh DESCRIPTION
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The
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.Nm
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converts dvd subtitles from the vobsub format into an intermediate form
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suitable for OCR extraction.
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.Pp
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.Nm
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takes two files as input, which should be named <vobsub>.idx and <vobsub>.sub,
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where
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.Ar vobsub
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is the basename of the files.
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.Pp
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.Nm
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outputs one .pgm graphics file for each subtitle image,
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and a .srt template file with correct timing annotation, where
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each subtitle entry is replaced with the corresponding graphics file entry
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with .txt appended.
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.Pp
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After OCR conversion, such a file can be transformed into a proper srt file
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by
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.Xr srttool 1 .
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The options are as follows:
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.Bl -tag -width Flooutput
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.It Fl d
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Displays debugging information as subtitle info is extracted.
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.It Fl h
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Displays usage and quits.
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.It Fl o srtbase
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Basename for all .pgm output files and the .srt template.
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.It Fl t sid
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Selects subtitle id from a vobsub file with several subtitle streams.
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Defaults to 0.
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.El
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.Sh SEE ALSO
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.Xr gocr 1 ,
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.Xr mencoder 1 ,
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.Xr srttool 1 .
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