Presentation Instructions

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The IEEE APS/URSI 2021 technical program may consist of oral presentations delivered online or physically in Singapore.

  • Live Oral Presentation (Default)
    1. Presentation should be made preferably in real-time LIVE in a Zoom-based virtual room (i.e. by sharing the screen) from the website.
    2. Authors should prepare a 15-minute in-person oral-style presentation according to the technical program schedule.
    3. Attendees will be able to ask questions during the oral session, both via Zoom chat or Q&A, or directly in the virtual presentation room (via Zoom).
  • To avoid technical issues and no-show difficulties, we encourage all authors to prepare also a recorded video presentation (no longer than 15 minutes) though you are conducting LIVE presentations. Please submit your video as soon as possible by 8 November 2021 following the following two steps:

    Step 1: Record your video following the recording instructions below.

    Step 2: Upload your video following the uploading instruction below. The video submission link is provided at the bottom of this page.

  • Your presentation will be made available only to registered Symposium attendees for a limited period of time.

Step 1: Creating a presentation video

(1) Tools Available

There are several tools available to easily record a presentation, almost all of which are available on MacOS or Microsoft Windows, and some are also available on Linux operating systems.

The simplest is to create a Voice Over PowerPoint presentation:

and convert it to MP4

Alternatively, you can use a software suite such as Camtasia to achieve a similar result.

Finally, you can use any meeting software, as long as you have a recording of good quality and your final file is in the MP4 format. Here are some links to instructions on recording a meeting on common platforms:

(2) Audio/Video File Requirements
  • All files must be in MP4 Format
  • Duration: A maximum of 15 minutes
  • Format: MP4
  • Dimensions: Minimum height 480 pixels
  • File size: Maximum 100 MB
  • Aspect Ratio: 16:9 (widescreen format)
(3) Tips for Recording
  1. Check that your final video and audio plays directly in common web browsers like Chrome/Chromium, Firefox, etc. by dragging the video file onto a browser window. You may need to re-encode the video file with different parameters if there is no audio or video portion played on the web browser.
  2. Use as quiet an area as possible.
  3. Avoid areas that have echo:
    1. Rooms should be fairly small;
    2. Sound dampening with carpeting, curtains, furniture.
  4. Hardline internet connections are highly recommended, but if unavailable, a strong Wi-Fi connection should do the job.
  5. A good headset with a microphone set close to your mouth BUT away from direct line of mouth to reduce “pops”. Try to avoid using default, built-in microphones on your computer, if possible.
  6. Do a test recording of a couple of minutes and review the sound and picture quality, in the MP4 format, and check the bit rate before recording your entire presentation. Make adjustments as needed.

Step 2: Uploading Your Presentation Video and other Media Files

In addition to the video presentation, AP-S/URSI 2021 allows authors to upload other types of media to be used with the virtual presentation.

Type Description Required
Video Presentation An MP4 video of your presentation, 15 minutes long. Please read the Video Preparation Instructions above for more detailed formatting requirements. Required
Text Transcription A text transcription of your video presentation, following the WebVTT format. If provided, this will be used to enable the closed-caption feature in the video playback. Create a WebVTT file at Optional
Photograph A single photograph of the presenter or authors. Dimensions should be no larger than 1024 pixels in either height or width, and should be in PNG or JPEG format only. Optional
Slides A PDF or Powerpoint file containing your slides used in the presentation. Optional

Only ONE file of each type may be submitted. New uploads will REPLACE existing uploads of the same type.

Authors will be required to electronically sign a Consent and Release statmement, which grants the symposium the permission to receive, display, and archive the media files submitted for use during the virtual symposium.

After you have prepared your MP4 video file and any of the other optional media click the Upload Media button below and login with your Paper Number and Paper Password found in your paper submission confirmation email or the review results acceptance notification email.

If you have any questions, please email

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