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, Opus, PCM, Speex, Theora, Vorbis and VP8 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 dependen- cies 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 out- put. 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, --helpDisplay 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 out- put.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 particular Di- rectories 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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