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Provided by: transcode_1.0.2-0.8ubuntu3_i386

 

NAME

        avisplit - split AVI-files into chunks of a maximum size
 

SYNOPSIS

        avisplit [ -i file -o base [ -s size ] [ -H num ] [ -t s1-s2[,s3-s4,..]
        -c -m -b num -f commentfile ] ] [ -v ]
 

COPYRIGHT

        avisplit is Copyright (C) by Thomas Östreich.
 

DESCRIPTION

        avisplit splits a single AVI-file into chunks of size size.
        Each of the created chunks will be an independent file, i.e. it can be
        played without needing any other of the chunk.
 

OPTIONS

        -i file
               Specify the filename of the file to split into chunks.
 
        -o base
               Specify the base of the output filename(s) avisplit will then
               split to base-%04d.avi
 
        -s size
               Use this option to specify the maximum size (in units of MB) of
               the chunks avisplit should create. 0 means dechunk, create as
               many files as possible.
 
        -H num Create only the first num chunks then exit.
 
        -t s1-s2[,s3-s4,..]
               Split the input file based on time/framecode (hh:mm:ss.ms)
 
        -c     Together with -t. Merge all segments into one AVI-File again
               instead generating seperate files.
 
        -m     Together with -t. Force split at upper bondary instead of lower
               border.
 
        -b num Specify if avisplit should write an VBR mp3 header into the AVI
               file. Default is 1 because it does not hurt. num is either 1 or
               0.
 
        -f commentfile
               Read AVI tombstone data for header comments from commentfile.
               See /docs/avi_comments.txt for a sample.
 
        -v     Print only version information and exit.
 

EXAMPLES

        The command
 
        avisplit -s 700 -i my_file.avi
 
        will split the file my_file.avi into chunks which’s maximum size will
        not exceed 700 MB, i.e. they will fit onto a CD, each.  The created
        chunks will be named my_file.avi-0000, my_file.avi-0001, etc.
 
        avisplit -i my_file.avi -c -o out.avi -t
        00:10:00-00:11:00,00:13:00-00:14:00
 
        will grab Minutes 10 to 11 and 13 to 14 from my_file.avi and merge it
        into out.avi
        When you split a file with avisplit and the A/V sync for the first file
        is OK but the sync on all successive files is bad then have a look at
tcprobe(1) (shortend).
 
         | V: 25.000 fps, codec=dvsd, frames=250, width=720, height=576
         | A: 48000 Hz, format=0x01, bits=16, channels=2, bitrate=1536 kbps,
         |    10 chunks, 1920000 bytes
 
        You’ll see the AVI file has only 10 Audio chunks but 250 video chunks.
        That means one audio chunk spans several video frames.  avisplit can
        not cut a chunk in half, it only handles complete chunks. If you do,
        say, avisplit -s 20, it is possible that the first file will have 6
        audio chunks and the second one only 4 meaning there is too much audio
        in the first AVI file.
 
        The solution is to remux the AVI file with
               transcode -i in.avi -P1 -N 0x1 -y raw -o out.avi
        (of course -N 0x1 is not correct for all AVI files).  Now look at
        tcprobe again
 
         | V: 25.000 fps, codec=dvsd, frames=250, width=720, height=576
         | A: 48000 Hz, format=0x01, bits=16, channels=2, bitrate=1536 kbps,
         |   250 chunks, 1920000 bytes
 
        The data in this file is exactly the same (its bit-identical) as it was
        in in.avi; the AVI file was just written in a different way, we do now
        have 250 audio chunks which makes splitting much easier and more accu‐
        rate for avisplit.
 

AUTHORS

        avisplit was written by Thomas Östreich
        <ostreich@theorie.physik.uni-goettingen.de> with contributions from
        many others.  See AUTHORS for details.
tcdemux(1),
transcode(1)
 

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