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SUBS(1)               User Contributed Perl Documentation              SUBS(1)

NAME
       subs - convert, join, split, and re-time subtitles

FORMAT
               subs [options] subfile [ subfile ... ]

OPTIONS
       -a coeff, -b time
           a and b coefficients in linear transformation u=at+b, where t and u
           are src and dest times ( default(identity transform) is [a=1,b=0]
           ).  -a can be set as ratio, f.ex. 23.9/25

       -c codec
           Use codec to write file. Run 'subs -h' for list of installed
           codecs.

       -d  Try to prolong duration of quickly disappearing text.  'Quickly' is
           less than 0.8 second per line of text.

       -e command
           Run perl code for each line of text in file. On each run, the text
           and time variables are initialized, and new values, if any, written
           to the file. The variables are used for:

           $_  subtitle text line

           $b  cue beginning

           $e  cue end

           $i  line number

           $n  number of lines

           %p  persistent data between runs

           The -e option can be specified several times

       -h  Display help

       -i  Edit files in place ( makes backup in .bak files )

       -j sec
           Time interval between joins, seconds (default 2)

       -o file
           File to save processed subtitles (default out.sub)

       -O  Separate overlapped lines

       -p t1 t2 or -P t2 t1
           Set a control point, where t1 is time of a phrase spoken in the
           film and t2 is time when the same phrase as appears in the
           subtitle. Two points are required for deducing -a and -b
           coefficients; if only one point is specified, it is assumed that
           the other one is [0,0].

           Times can be relative, f.ex. -p 01:00 +3.5 -p -20 1:00:00

           Options -P and -p are the same except the argument sequence is
           reversed.  -P is to be used when arguments to -p were typed
           manually and in wrong order.

       -q t1 t2
           Restrict changes, if any, in time span t1-t2. Word 'end' can be
           used as an alias to the end of the file. Default values are '0' and
           'end'.

       -r rate
           Force frame-per-second rate for frame-based subs

       -s time
           Split in two parts by time

       -v  Be verbose

       -z file.sub
           Zip subtitle files so time information is read from file.sub, while
           text information is read from the input file(s).

NOTES
       The time format is either [[HH:]MM:]SS[.MSEC] or subtitle format-
       specific

EXAMPLES
       Warning: -i is a great feature, but use it with certain caution.

       If subtitles are shown too early ( 5 seconds):

         subs -i -b 5 file.sub

       If subtitles are for a movie in 25 fps, need to be for 24 ( actual for
       frame-based formats only ).

         subs -i -a 24/25 file.sub

       If subtitles start ok, but in 1 hour are late in 7 seconds:

         subs -i -p 0 0 -p 1:00:00 +7 file.sub

       Join two parts with 15-second gap

         subs -o joined.sub -j 15 part1.sub part2.sub

       Split in two after 50 minutes and half a second ( makes basename.1.sub
       and basename.2.sub ).

         subs -o basename.sub -s 50:00.5 toobig.sub

       Remove closed caption-specific comments such as '[Sneezing]' or '[Music
       playing]'

         subs -e 's/[\s-]*\[.*\]\s*\n*//gs' sub.sub

BUGS
       Subtitles written as ".smi" format may differ from original.

SEE ALSO
       Subtitles - backend module for this program

AUTHOR
       Dmitry Karasik, <dmitry@karasik.eu.org>.

perl v5.20.2                      2009-12-22                           SUBS(1)