The DebConf video team is using a large number of programs, some
common and some of our own, spread across 20-30 computers. Some
may be interested to know what this is.
- FAI for
package installation and configuration on DebConf machines.
- dvgrab for
video grabbing. We are using a variety of DV cameras, but dvgrab
works well with almost all of them.
- dvswitch
for switching between multiple cameras and files.
- ffmpeg2theora
for transcoding to Ogg Theora/Vorbis, both for live streams and for
the downloadable files slowly appearing on meetings-archive.
- A small number of scripts for starting the above three programs
and recording to files.
- Icecast 2 for streaming. We
are currently using the sarge package rebuilt for etch because the
server in the etch package is unstable in our double-relayed
configuration. (To limit bandwidth use between DebConf and the
Internet, we have an internal server for internal use and an external
relay that serves as master for all other relays.)
- GeoDNS and a
monitoring script to resolve streams.video.debconf.org to the nearest
working relay server.
- A newly-developed extension to the Pentabarf conference management
system that presents recordings for review. Reviewers match up
recordings to events, give the start and end time of the event in the
recording so we can cut out extra material, and rate the quality of
the recordings and transcoded files.
- A script to import the details of new recordings into the database
ready for review, run as a cron job.
- A script to transcode recordings into multiple versions using the
timing and naming information provided by reviewers. This spreads
the work across multiple servers controlled using ssh (again!).
Most of the custom software and configurations should be included
in the debconf-video
project on Alioth.
posted at: 02:07 | path: / | permanent link to this entry