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avisplit(1)		    General Commands Manual		   avisplit(1)

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 Oestreich.

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 in-
	      stead 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

BAD SYNCH
       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
       the output of 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 au-
       dio 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 Oestreich
       <ostreich@theorie.physik.uni-goettingen.de> with	contributions from
       many others.  See AUTHORS for details.

SEE ALSO
       aviindex(1), avifix(1), avimerge(1), tccat(1), tcdecode(1), tcdemux(1),
       tcextract(1), tcprobe(1), tcscan(1), transcode(1)

avisplit(1)			25th June 2003			   avisplit(1)

NAME | SYNOPSIS | COPYRIGHT | DESCRIPTION | OPTIONS | EXAMPLES | BAD SYNCH | AUTHORS | SEE ALSO

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