Erfa Video Setup

Live-Streaming and recording setups in CCC Erfas and Hackerspaces. Recordings of these groups can be found on https://media.ccc.de/b/erfas

• CCCAC
• CCCB
• CCC Köln
• CCC München
• CCC Zürich

A hard- and software collection that can be used entirely or in peaces for small to midsize events in hacker-spaces / erfas.
It should be aligned with the best practices worked out in the operation of c3voc but be a more cost efficient solution.
We will list here only components we tested / use our self. This doesn't mean you can't use other components, its just an blueprint.
It also should be modular that it can be tailored to the needs and budgets of user and already existing components can be integrated.

In the following we list the main building blocks an make some suggestions what could be used.

• FullHD Video recording
  • live mxing ⇒ Voctomix
  • Streaming in FullHD ⇒ streaming
  • Slides via “Framegrabber” ⇒ framegrabber
  • At least one Kamera ⇒ camera
• Capture Audio ⇒ audio
  • Headset + hand mic
  • Audio mixer (optional)
• Postprocessing support to publishing on media.ccc.de and optional other platforms ⇒ publishing
  • without fuse recording ⇒ tracker import recording worker
  • with full tracker stack ⇒ normal tracker chain

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There are numerous options for cameras depending on your budget. In most situations we recommend to feed you audio into the camera via XLR. This has two main advantages, one it that you audio will be in sync with the video all the time, the other is that you have a backup of audio and video on the SD card of your cam. Also using SDI to connect the camera to your video mixer is a much more stable and reliable solution than e.g. HDMI. Therefore the following points should be taken into concern when buying a cam.

• Audio in (preferable XLR)
• Video out (preferable SDI)
• SD card recording (much cheaper than other solutions)
• A wide-aperture lens (if you don't have a professional light setup)

In most cases this will lead you to semi- / professional cameras which can be expensive. It may be a good option to look for used ones. A entrance level cam is the JVC GY-HM200E which sadly has not the best lens but has a reasonable price. A much better lens can be found in many Panasonic cams like ag-ac-160-eej which you probably can buy second hand.

Ein Headset ist in den meisten fällen für den Speaker am angenehmsten zu tragen da er die Hände frei hat. Gerade ungeübte Sprecher haben oft Probleme ein Stabmikrofon konstant gleich zu halten.

Da Publikumsfragen ein wichtiger Teil eines Vortrags sind macht sich darüber hinaus ein Handmikrofon fürs Publikum gut.

An die vorgeschlagen Kamera lassen sich zwei Mikrofone direkt anschließen ein Audiomischer ist daher nicht zwingend notwendig bietet aber durch aus Vorteile und sollte bei nicht zu engem Budget auch angeschafft werden.

Dies kann alles in einem PC erfolge wenn genug CPU vorhanden ist. …

VOC CDN can be used by all erfas/frinds just ask us
we can either pull a “voc default mkv” from an icecast running at your side or offer an RTMP endpoint. Both ways the stream will end up in our cdn and you can use our Streaming website as a frontend. This also also you to embedd the stream in your own webpage.

Depending on how much of our stack you use we have different option on ingesting you content in our publishing pipeline. The c3tracker can support you from cutting the raw videos to publish numerous formats to voctoweb (the software behind media.ccc.de) and other platforms like youtube. We can ingest ready produced videos with pre and postrole or let the tracker add those to the file.