= Requirements

Deutsche Fassung: [[de:requirements]]

=== Help

We need help(ers) (/volunteers?) to run our setup in each room, mainly to operate cameras but also to operate the video mixer for switching between camera and slides. The organiser is responsible for making these helpers available. See also [[HelperIntroduction | Helfereinführung]]

=== AV
* Audio: we need a Mono audio mix per XLR, which we insert into a camera directly.
* We also own audio equipment (mixer, microphones), which we don't always bring with us. When our equipment is absolutely necessary, clarify this as soon as possible with us.
* We *do not* own a PA system, this will have to be provided by the location or rented externally. Please clarify this as early as possible.
* Slides, projector signal via HDMI preferred, VGA as a backup. 19:9 aspect ratio is required.
* Projektor/Folien: Projektor-Signal per VGA oder HDMI – bevorzugt in 16:9. Please clarify where we can split the video signal into our system.

=== Schedule/Program

Our semi-automated editing platform needs the program/schedule in the schedule.xml format. When you are not using Pretalx, we can import spreadsheet files (CSV, ODS, XSLX, Google Docs, etc) or you can build your own tooling. For more information see [[schedule]].

As of 2022 you can now also use our [[https://pretalx.c3voc.de|own Pretalx intance]].


=== Network

Our system more or less requires access to the Internet. If a firewall is on site, we need free access to the listed ports at various (often changing) addresses on the Internet, unfiltered access is much preferred. Access should also be *without* a browser based portal.
* **TCP:** 22 (SSH), 80 (HTTP), 443 (HTTPS), 6667 (IRC), 6697 (IRC), 1883 (Mosquitto), 8883 (Mosquitto)
* **UDP:** 53 (DNS), 1194 (VPN)

When sufficient Upload bandwidth is available we can also offer live streaming. We need at least 3MBit/s per stream/room, 5MBit/s is better.

At events with more than one room we need all presentation rooms and our own office room connected to the same Layer 2 segment (for instance our own VLAN). Each room should have free Ethernet port(s), WiFi is insufficient. In an "emergency" we can run cabling through open windows or under doors etc.

=== Design

We produce videos in Full HD, meaning 1920x1080p25. This means that we require artwork in these formats:
* Background image as PNG, optionally as an animation. 
  * See the background of [[https://cloud.githubusercontent.com/assets/40266/24840604/3ab09c48-1d70-11e7-98e6-569970d152d2.png|1]] - there are several possible use cases for the background, see this video https://youtu.be/DNMpEpZnPLk?t=24m16s for possible limitations.
  * https://github.com/voc/voctomix/issues/131#issuecomment-293774582
    * [[http://babelmonkeys.de/%7Eflorob/voctomix/template.svg|SVG Example]]
    * [[http://babelmonkeys.de/%7Eflorob/voctomix/template.psd|Photoshop Example]]
* Intro titelcard as SVG
  * Example: https://github.com/voc/intro-outro-generator/blob/master/fossgis17/artwork/intro.svg
  * When possible including animation
    * supplied as MP4 or using the Generator
* Outro title card as SVG
  * Example: https://github.com/voc/intro-outro-generator/blob/master/fossgis17/artwork/outro.svg
  * When possible including animation
    * supplied as MP4 or using the Generator
* When live streaming
  * Pause image or animation
    * Example: https://github.com/voc/intro-outro-generator/blob/master/sotmeu14/examples/pause.mp4?raw=true
  * Optionally include "streaming logos" with room names
    * Example https://github.com/voc/intro-outro-generator/blob/master/fossgis17/artwork/overlay.svg
  * Optionally Artwork/design for the live streaming website
    * Logo, CSS see https://streaming.media.ccc.de/fossgis17/ and https://github.com/voc/streaming-website/blob/master/README.md#konfiguration
  * Optionally an [[https://info-beamer.com/|Infobeamer]] design


Intro/Outro-Generator https://github.com/voc/intro-outro-generator
(Requires Python and Inkscape knowledge)
* Examples of generated Intros/Outros/Pause artwork https://github.com/voc/intro-outro-generator/tree/master/sotmeu14/examples

=== Insurance

The organiser has to insure our hardware for damages and theft during the event and relevant transportation from/to the event. Since the hardware is relatively expensive (ca. 10kEURO / room) this is usually handled by an event insurance which most organiser will already have. When necessary we can supply relevant serial numbers upon request. See [[eventhowto#anlieferung_versicherung]] for more information on this topic.