FOSDEM 2022: Support for speakers

Hello FOSDEM 2022 speakers!

As you all know, this year’s FOSDEM will be very different again due to the global pandemic - it will be a 100% online conference.

Like last year, the organisers are still making decisions and creating systems to be used, so our deadlines are unfortunately short.

Below you’ll find information on what you as a speaker need to do, the technical video requirements, and advice on how to record your talk video, then upload it to the Pentabarf system.

Preparing your talk

Please ensure your pre-recorded talk for FOSDEM 2022 is uploaded to the Pentabarf system (where you submitted your talk) no later than midnight (00.00 UTC) 21st of January 2022.

If your talk is presented by more than one person, this person must create a Pentabarf account and send the username to @Erioldoesdesign and @ei8fdb, who can add an extra speaker to the talk.

1. Speakers must record and edit their own talk.

Speakers will need to record, edit and upload their own talks. Devroom managers, Points of Contact, or FOSDEM organisers cannot do this for you.

FOSDEM organisers recommend using OBS to record and edit your talk video. This how-to gives useful advice. (OBS Recording: How to Use OBS Studio to Record or Stream Live Presentations - DEV Community) It can be installed on Windows, Mac and Linux.

Personally in the past I have had good experience using ScreenFlow on Mac OS.

If you have experience of other software, then feel free to use it as long as it can create videos in the correct format. (See point 6 below)

2. Upload deadline

Deadline for uploading your video to FOSDEM’s penta system is the midnight (00:00 UTC) 21st of January 2022.

We recommend you recording and editing the video as soon as possible to minimise delays due to technical issues.

Practical advice for speakers

Here’s some helpful advice for speakers -

1. Keep it simple!

We recommend you keeping your presentation reasonably simple in terms of slides, and camera. Here are some different video layouts, from easy to more difficult:

  • Making a video of slides with voice - this is the simplest
  • Making a video of slides with a “speaking head” in a small floating window in front - a little more complicated

2. Make sure your slides scale well

Don’t overload your slides. Make sure everything is readable when scaled down slightly. The 1280×720 video you send in might or might not be scaled down to fit onto a FOSDEM template!

3. Don’t go over time!

Make sure your video presentation fits into the length of time you requested with room to spare for questions and answers.

FOSDEM 2021 works on a strict broadcast schedule. The FOSDEM systems will ruthlessly cut you off at the end of your timeslot!

4. Make sure your video is in the right format

Your recording video format must follow these technical requirements:

resolution: 1280×720
frame rate: 25 fps
video codec: h264 video codec, main profile
video bitrate: <= 2Mbit/s
audio codec: aac audio codec
audio sample rate: 48 KHz mono
audio bitrate: 128 Kbit/s
media container: whatever is easiest for you

5. Uploading your talk

For those who are unsure of the technical details above, follow this (hopefully) easy approach:

When you upload the video, the FOSDEM upload system will verify that your video file meets the above constraints. If it does meet these constraints, there should be no problem.

If it doesn’t, the FOSDEM system will need to transcode it (convert the video from the format you’ve created it in to a format it is able to accept). This will take a longer time. You’ll need to wait and confirm it has been uploaded.

Last year we put together a quick screencast showing how to upload your talk -


(Obviously choose 2022, instead of 2021 ;))

4. Any questions?

If you have any questions, please get in touch with your Devroom Point of Contact - you’ve received an email with there name and email address.

Good luck!