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Recordings and Streamdumps

see Documentation


To access camp live streams use the web player interface at

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

The live streams are available in a different of formats, over a variety of transports.

Each stream is available in the native language of the talk (english or german), as well as including a translation (german or english). The video are encoded in either AVC h.264 or WebM VP8, the audio only streams in mp3 or opus. AVC/h.264 is provided via RTMP and HLS. We won't provide a full matrix of the available streams, as the streaming urls are already listed in the above web interface.

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 switched manually if required. This one of the stream types with lower latency.

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
    • 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 provided at .


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.


see Static:Camp_everywhere#To_ask_a_question_in_a_talk



There will be three 6W EIRP DVB-T transmitters placed at the camp.

More information have a look at the Projects:DVB-T project page.


There might also be one FM audio channel. Bring you kitchen radios and other FM receivers!

DECT / SIP / GSM Audio Streams

Number Function
8001 Lecture Tent A
8011 Lecture Tent A (simultaneous interpretation, if offered)
8002 Lecture Tent B
8012 Lecture Tent B (simultaneous interpretation, if offered)