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


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


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 ]


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.


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.
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
The following configuration for Apache httpd will enable oggz-chop. As with most Apache directives, this may of course be restricted to particular 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.


Conrad Parker February 25, 2008;


Copyright (C) 2008 Annodex Association


oggz-validate(1), oggz-merge(1), oggz-dump(1), hogg(1) OGGZ-CHOP(1)

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