What is the Average Size for a 1 Hour Network-Based Recording?

What is the average size for an hour long Network-Based Recording?

What is the average recording size of a MP4 recording?

What is the average size of an hour long NBR recording in MP4 format?

How big is a Webex ARF or MP4 recording with video?

MP4 Recordings Default in Webex Meetings 40.10

Beginning with  40.10 release, all-new recordings in Webex Meetings will be stored in MP4 format, either in the cloud or locally as selected at the site or host level, with a video-centric experience. By standardizing the recording format, you'll have a wider choice of playback tools, better security, and a more effortless collaboration experience even after your meetings. Existing ARF and WRF recordings can still be downloaded or played at the Webex site. For more information regarding video-centric recording, go to Video-Centric Network-Based MP4 Recordings in Webex Meetings and Webex Events.


The size of a Network-Based Recording (in both ARF and MP4) will vary depending on the features used within the meeting.

See the estimated recording sizes by activity below:

  • Application/desktop sharing: 110 MB per hour
  • VoIP audio: 30 MB per hour
Video Centric Recording:
  • 360p (High Quality) video: 40 MB per hour
  • 720p (High Definition) video: 220 MB per hour
  • MP4 recording file size is approximately 150% of the size of the same ARF recording file.
    • Example:
      • MP4 / 180 speaker video / 120MB
      • ARF / 180p speaker video / ~ 80MB

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