Recordings and Streamdumps

see Documentation


Note: These streams are not available till day 1 (27th December).

The live streams are available in a different of formats, over a variety of transports. For each room is at high quality (HQ, 576p) and low quality (LQ, 360p) stream available. For hall 1 (Saal 1) there is an additional high definition (HD, 1080p) stream. Each stream is available in the native language of the talk (english or german), as well as including a translation (german or english).

The easiest way to access the streams is the Web Interface at

The following is a full matrix of the available streams:

Saal 1 Saal 2 Saal G Saal 6
RTMP h.264
HLS h.264
WebM VP8




Twitter Hashtag #hall1 #hall2 #hallG #hall6

Follow @c3streaming on twitter to get up to date information.

In the following sections we try to collect some more information when to use which stream and client. Please add your own experiences.


RTMP only works with native clients like VLC/mplayer or flash. They contain a h.264 stream and there is one stream per available resolution/quality which have to be switch manually if needed. This one of the stream types with lower latency. In the CCH you can expect around 15 seconds.

The player on the website falls back to rtmp and therefore flash if nothing else works.


HTTP live steams (HLS) contain h.264/MPEG AVC video and should work on

  • most iOS devices
  • Android with
    • native (since Android 4)
    • Daroon Player
  • PCs with
    • VLC >1.2
    • current FFMPEG (see below)
    • current mplayer
    • Quicktime X
    • Safari webbrowser

If you choose the "Auto"-Stream URL, your player will choose the optimal quality for your connection. Rewinding to the past, also known as VOD or Relive is currently not supported.


This http stream uses VP8 as video codec and Vorbis for audio. They should work natively in on PC in Firefox, Chrome and Android ≥ 4.


Audio only streams are good if you don't need video or only have low bandwidth (e.g. mobile phone). MP3 should be played with nearly every player out there. Opus works in VLC and is even more bandwidth-friendly.


As an alternative to video or as an addition to audio-only there is a page, where you can follow the video streams by screenshots only. This uses very low bandwidth and gives you an idea of what's happening. You can read the slides and see a face to what you hear, but nothing more. You can use the images provided to create your own screenshot page as well and post it here.

DECT / SIP / GSM Audio Streams

Number Function
8001 Saal 1
8011 Saal 1 (simultaneous interpretation, if offered)
8002 Saal 2
8012 Saal 2 (simultaneous interpretation, if offered)
8004 Saal G
8014 Saal G (simultaneous interpretation, if offered)
8006 Saal 6
8016 Saal 6 (simultaneous interpretation, if offered)
Archived page - Impressum/Datenschutz