= Video team sprint notes =
<<TableOfContents()>>
== An assessment of the current situation ==
 1. [[attachment:videoteam-sprint-current-arch.svg | current streaming architecture]]
 1. Current setup
  * talk capture
   . 2 cameras
   . slide/presenter's laptop capture (goes to projector)
    . hdmi (audio and video)
    . vga (video)
    . audio
    . DP/miniDP to hdmi (audio and video)
   . up to 2 speaker mics
   . up to 2 audience mics
   . up to 2 ambient mics
  * three outputs
   . talk capture output to streaming
   . projector screen (shows slides/laptop)
   . confidence screen (duplicate of projector for presenter)
  * two inputs
   . mixed capture
   . remote source (e.g. streaming from another room)

We use [[http://www.dvuser.co.uk/content.php?CID=38 | TwinPacts]] and laptops running [[http://dvswitch.alioth.debian.org/wiki/ | DVSwitch]].  These are getting old, don't support HD, don't support the modern HDMI laptops that presenters turn up with.
== Sources of inspiration ==
Other places that capture presentations
 * CarlFX
 * Chaos Communication Congress
 * Linux.com.au
 * PyCon
 * Quadrant
 * FOSDEM

== Thursday session ==

=== Objective 1: replace twinpact ===
==== Goals ====
 1. replicate existing functionality
 1. increase resolution to 720p or 1080p modes
 1. independent confidence screen for presenter
 1. remote video source (for repeater rooms)
 1. audio in/out tied to source/sink
 1. direct to ethernet or sdi

==== Discussion points ====
The consensus seems to be to use [[http://hdmi2usb.tv/home/ | HDMI2USB]] in some form.
 * [[attachment:videoteam-sprint-twinpact-replacement.svg | TwinPact replacement design proposal]] based on HDMI2USB firmware loaded onto a  [[http://hdmi2usb.tv/numato-opsis | Numato Opsis]] connected to a [[http://beagleboard.org/BLACK | Beaglebone Black]].  Three Opsis boards are on order for the video team.
 * [[http://roger.mithis.com/~tim/debconf-options.svg | HDMI2USB options]]
 * We are currently prototyping on a [[http://hdmi2usb.tv/digilent-atlys/ | Digilent Atlys]]

=== Objective 2: replace DVswitch ===
==== Goals ====
 1. replicate existing functionality
 1. increase resolution to 720p or 1080p modes
 1. select output on twinpact replacement
 1. select source for output #2
 1. record all inputs
 1. record all edits

=== Objective 3: streaming ===
==== Goals ====
 1. single domain name, website to start debconf video
 1. point "local" capture to streaming services
 1. log stats
 1. list and name streams

==== Discussion points ====
 * avoiding pulling by infrastructure outside of the conference venue to reduce problems with venue nat and firewall.  [[attachment:videoteam-sprint-future-arch.svg | Streaming architecture proposal]]

=== Objective 4: AV kit ===
==== Goals ====
 1. rearrange kit by room and package up on per-room basis
 1. cameras
  * hdmi/sdi/ethernet
  * lens
 1. mics
  * licences for radio frequencies to run wireless mics
 1. DI boxes
 1. director talkback to camera operators

==== Discussion points ====
 * The mixing station could be in one flight case that you open, connect up, and use.
 * how much redundancy do we think we need?
  . PCs are easy to obtain, we could keep spares of the hard-to-source capture cards
 * video transmission protocol between camera and mixer
==== Decisions ====
 1. Kit by room
  a. Kit for a talk room
   * 2 speaker mics
   * main camera
   * audience camera
   * optional fixed wideangle webcam
   * capture workstation with single set of capturing cards
   * 2 ambient microphones
   * sound mixer 4-channel
  a. Kit for plenary
   * as talk room
   * 2 more speaker mics
   * 2 more cameras
   * second set of capturing cards in workstation

=== Objective 5: kit for BOF room ===
==== Goals ====
 1. to be investigated
 1. consider videoconferencing kit as alternative to camera and mic

=== Objective 6: logistics ===
==== Goals ====
 1. can we avoid shipping cables?
 1. hire versus buy

== Friday session ==
=== Objective 1: replace twinpact ===
==== Achievements ====
Lots of work on the Atlys-based prototype and software to support it.  This will be tested at the talks of this Minidebconf.
=== Objective 2: Replace DVswitch ===
==== Achievements ====
People are looking at [[https://github.com/timvideos/gst-switch | gst-switch]] and [[https://github.com/voc/voctomix | voctomix]].
== Actions to take away ==
 * David Leggett to investigate Polycom videoconferencing equipment for objective 5
 * Andy Simpkins and Andy Cater to create a software to generate a sponsor loop from arbitrary still images and package and upload it to the Debian package archive.