Presenter Instructions


This edition of the Web Audio Conference will be a little different from previous editions, and the main reason for this is the virtual format of the conference. With the aim to encourage more interaction and conversation between attendees, every submission will have a short prerecorded video presentation available on the WAC2021 website and a scheduled poster session to explain the work and discuss it in more detail with the audience.

Prerecorded Video

These prerecorded short videos should introduce the topic of your paper, provide some of the insights from your work, and entice the audience to read the paper and visit your poster sessions.

The videos must be submitted by June 13th. Our team will review them for quality, append title cards with the schedule details, and upload them on the (TODO see comments) web audio YouTube channel.

You can record the video using your preferred presentation program (such as Powerpoint or Google Slides) together with virtual meeting platforms that allow recording video calls (Zoom, Google Meet, Microsoft Teams, etc.) Another program commonly used for these kinds of recordings, is the open-source software OBS Studio. Using this program, you can easily set different scenes and change between them on the go while recording.


We propose the use of the following three scenes combining them throughout the video presentation:

Scene 1

Scene 1

Focuses on the presenter. It can work well for the introduction and the end of the video as well as for other parts where it is not essential to show any helping image.
Scene 2

Scene 2

Is useful to focus the attention on the helping image, slides, code, or any other video image.
Scene 3

Scene 3

Is a mixed scene showing at the same time the presenter and the helping images or videos. It can be used throughout the entire video.

If the authors can’t produce a video with multiple scenes, we recommend using a composition similar to Scene 3 where both the author and the slides or other helping images are seen simultaneously.

All video presentations must include accurate captions, including descriptions of non-speech elements such as sound effects and speaker names if multiple speakers are featured. Web services such as Youtube Studios, Zubtitle, and Amara allow you to generate, edit, and export subtitles in formats like .srt that you can then upload to CMT together with your video. Here is some guidance on encoding captions from another virtual conference.


All videos will be uploaded to the Web Audio Conf YouTube channel for streaming access during and after the conference. Besides, they will be embedded on the website. After the event a link to these videos will be available from the website where the online proceedings of the previous editions of the conference can be found.


Note that excerpts of copyrighted audio recordings may cause a video to be suppressed.

Video Submission deadline: 13 June 2020, Anywhere On Earth (AOE)


  • Video format: mp4
  • Video codec: H.264
  • Dimension: minimum height 720 px, aspect ratio 16:9
  • Resolution: 720p or 1080p
  • Video filename: include submission number and presenting author’s family name (e.g., 118_Upham.mp4)
  • Subtitle format: .srt
  • Subtitles filename:  include submission number and presenting author’s family name (e.g.,


Paper and Talks

  • Duration: 5 to 8 minutes (up to 10 min allowed)
  • Max file size: 500mb


Demos and Artworks

  • Duration: 5 minutes (up to 7 min allowed)
  • Max file size: 250mb


The poster sessions are an interactive forum in which authors can present further details of their work and discuss live with attendees. We strongly recommend to all authors of all tracks to have a poster for their session.

In case you prefer a different option for your session, like embedding a website or using a slides presentation, please get in contact with your chairs to discuss your needs.

Poster Submission deadline: 20 June 2020, Anywhere On Earth (AOE)

Main document

  • .png and .pdf file types may be uploaded to CMT.
  • Minimum width is 1000px (26.46cm).
  • Minimum height is 600px (15.88cm).
  • Maximum file size is 3MB.
  • No transparent background.
  • Minimum DPI of 72


Preview “thumbnail” document

  • .png or .jpg format 
  • A copy of the main poster document that has been made smaller.
  • Recommended width is half of the main document.
  • Recommended height is half of the main document.


To submit your video, the subtitles file and the poster files please enter in the CMT platform and upload it as “Supplementary material” to your submission.


If you have any questions, please contact


Submission system

You have to register in the following link. Then you will be able to submit your paper to the track you are interested.