Revision as of 22:57, 29 June 2009
Oggz comprises liboggz and the tool oggz, which provides commands to inspect, edit and validate Ogg files. The oggz-chop tool can also be used to serve time ranges of Ogg media over HTTP by any web server that supports CGI.
liboggz is a C library for reading and writing Ogg files and streams. It offers various improvements over the reference libogg, including support for seeking, validation and timestamp interpretation.
Usage: oggz [options] filename ...
oggz is a commandline tool for manipulating Ogg files. It supports multiplexed files conformant with RFC3533. Oggz can parse headers for CELT, CMML, FLAC, Kate, PCM, Speex, Theora and Vorbis, and can read and write Ogg Skeleton logical bitstreams.
help Display help for a specific subcommand (eg. "oggz help chop")
diff Hexdump the packets of two Ogg files and output differences. dump Hexdump packets of an Ogg file, or revert an Ogg file from such a hexdump. info Display information about one or more Ogg files and their bitstreams. scan Scan an Ogg file and output characteristic landmarks. validate Validate the Ogg framing of one or more files.
rip Extract one or more logical bitstreams from an Ogg file.
chop Extract the part of an Ogg file between given start and/or end times. comment List or edit comments in an Ogg file. merge Merge Ogg files together, interleaving pages in order of presentation time. sort Sort the pages of an Ogg file in order of presentation time.
known-codecs List codecs known by this version of oggz
oggz-chop extracts the part of an Ogg file between given start and/or end times. 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.
An Apache server can be configured to use oggz-chop to handle all Ogg files (or, all Ogg files in a particular directory). An example Apache configuration is in the liboggz source tree, along with a script for installing it on a Debian server.