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oggz-chop(1)		    General Commands Manual		  oggz-chop(1)

NAME
       oggz-chop -- Extract the	part of	an Ogg file between given start	and/or
       end times.

SYNOPSIS
       oggz-chop [-o filename	|  --output  filename  ]   [-s	start_time   |
       --start	start_time  ]	[-e end_time  |	--end end_time ]  [-k  | --no-
       skeleton	] filename

       oggz-chop [-h  |	--help ]  [-v  | --version ]

Description
       oggz-chop chops a section of an Ogg file.  It correctly interprets  the
       granulepos timestamps of	Ogg CELT, CMML,	Dirac, FLAC, Kate, PCM,	Speex,
       Theora and Vorbis bitstreams.  Run oggz-known-codecs(1) for a full list
       of codecs known by the installed	version	of oggz.

       The  output  file contains copies of the	headers	of the input file, and
       all the codec data required to correctly	decode the content between the
       start  and end times specified on the commandline. For codecs with data
       dependencies like video keyframes, the keyframe prior to	 the  starting
       time will be included in	the output.

       Note  that oggz-chop operates by	copying	pages of Ogg data; it does not
       strip partial packets from the first or last data page included in  the
       output.	It  does  however  ensure to set the end of stream flag	on the
       last page of each logical bitstream.

       Skeleton	handling: By default, the output will contain a	Skeleton track
       specifying the start of the chop	as presentation	time.

Options
       oggz-chop accepts the following options:

   Output options
       -o filename, --output filename
		 Write output to the specified filename	instead	of printing it
		 to standard output.

       -s start_time, --start start_time
		 Specify the start time	of the chopped section to output.

       -e end_time, --end end_time
		 Specify the end time of the chopped section to	output.

       -k , --no-skeleton
		 Do NOT	include	a Skeleton bitstream in	the output.

       -h, --help
		 Display usage information and exit.

       -v, --version
		 Output	version	information and	exit.

EXAMPLES
       Extract the first minute	of file.ogx:

	      oggz chop	-e 1:00	file.ogx

       Extract from the	second to the fifth minute of file.ogx:

	      oggz chop	-s 2:00	-e 5:00	-o output.ogx file.ogx

       Extract,	specifying SMPTE-25 frame offsets:

	      oggz chop	-s smpte-25:00:02:03::12 -e  smpte-25:00:05:02::04  -o
	      output.ogv file.ogv

Server configuration
       The  following configuration for	Apache httpd will enable oggz-chop. As
       with most Apache	directives, this may of	course be restricted  to  par-
       ticular Directories or Locations:

       ScriptAlias /oggz-chop /usr/bin/oggz-chop

       Action application/ogg /oggz-chop

   HTTP/1.1 Cacheability
       oggz-chop  generates Last-Modified HTTP headers,	and responds correctly
       to If-Modified-Since conditional	GET requests.

AUTHOR
       Conrad Parker	    February 25, 2008;

COPYRIGHT
       Copyright (C) 2008 Annodex Association

SEE ALSO
       oggz-validate(1), oggz-merge(1),	oggz-dump(1), hogg(1)

								  oggz-chop(1)

NAME | SYNOPSIS | Description | Options | EXAMPLES | Server configuration | AUTHOR | COPYRIGHT | SEE ALSO

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