Translations at 34C3

TL;DR: Just like in previous years, a team of translation angels will be on hand to whisper simultaneous interpretations of all talks at 34C3 in your ear, starting right on day one. All German talks will be translated to English, and all English talks to German. There is a second translation stream in all four locations that we will use for various target languages – catch the heralds’ announcements for details. To listen to the translations, you will need a device with either a web browser, a generic audio stream player (such as VLC), or a Mumble client (“work in progress”). We cannot provide any transmission technology that is independent from the Internet this year, but we are working to make the IP-based technologies more immediate and reliable than in previous years. More details about receiving the translations are below. Bookmark for all required pointers and updates. By the way, you can also join us.


With the continuing growth of the congress and the move to a new location, serving our translations via DECT is no longer feasible. We will have two distribution technologies this year – both new and hopefully accessible to everyone. Since this is the first year with the new system, there might still be some glitches, but we will do our best to make this transition as painless as possible.

  1. You can listen to the translations at, kindly provided by the VOC. This is specifically optimised for listening in the lecture hall, minimising latency compared to the normal stream. You can listen directly in the browser or import the link to your VLC player on any device. Instructions for this will be made available on Note that latency might be a tad higher due to technical constraints.

  2. We are setting up a Mumble server. However this is “work in progress”. This server had very low latency in our tests. It can be found at on the standard mumble port (64738). You can access this server on a mumble client of your choice, our recommended clients are listed at We have also set up a web client at that allows you to use Mumble in your browser without specific Mumble software.
    The Mumble channels are ordered according to hall name. We have two channels in each hall. The first channel is for the translation to English or German, the second channel is the optional translation to another language. The heralds will announce whether and which other language will be offered. We have configured the channels so that you will only be able to listen, not talk.

We will update with recent information and pointers, so this is a good place for you to check at the beginning of each talk. As always, our translations are also available when streaming the talks off-site (at and when viewing the talks later (at

Since this is the first year we’re using Wi-Fi as our sole means of streaming our translations at the Congress site, please do let us know any issues, preferably via Twitter. (@c3lingo or hashtag #c3t) or via email to hello [at]