Although the Meeting Client can receive 1440p5, 1080p12, or 720p30, the cascade link between the device and the client limits content to 10 fps. This limitation applies to both wired and wireless connections.

Webex video platform version 2 known issues


This section applies only to Webex Meetings sites that have the Media Resource Type list available in the Cloud Collaboration Meeting Room site options. Contact your administrator for more information.

H.264 video codec required for content sharing

Content sharing is only supported using H.264 video codec. Older video systems that do not support H.264 codec will not be able to do content sharing.

In-meeting video thumbnail experience

Any cascades in Webex Meetings are limited to up to six streams at a time in either direction. For example, Webex Meetings participants only see up to six video streams of Webex Video Platform users connected through Webex Cisco Webex, Webex Room and Desk Devices, Skype for Business, and other SIP or H.323 devices connected to the meeting. Likewise, Webex Video Platform users only see up to six participants using Webex Meetings apps including apps for desktop, mobile, and web. Also, any participants that are connected through Webex Video Mesh nodes have the same limitation between their specific Webex Video Mesh node and devices or apps that are connected directly to the Webex cloud or other Webex Video Mesh nodes.

On-premises-registered video device roster

An on-premises-registered video device roster has a limitation for the number of participants displayed. Therefore, that roster may not show the total number of participants in the meeting, as reflected in the Webex Meetings desktop app.

Webex video platform version 1 known issues

Call My Video System

The option to Call My Video System may fail if attendees are required to press '1' and no RMS or Traversal Licenses are installed on the Customer Expressway-C and Expressway-E pair.

Video systems unable to join Webex Events (classic) on FedRAMP

Video systems are not able to join Events (classic) on the FedRAMP platform because the FedRAMP platform is currently running Video Platform 1 at this time.

Display names

Display names for video conferencing system users are not visible in the Webex meeting video window. This issue will be addressed in a future update.

Leaving and reentering a Personal Room

Sometimes, when hosts end a Webex video platform version 1 meeting by leaving their Personal Room and then reentering their Personal Room within a few seconds, they may hear an audio prompt about an invalid meeting. If this happens, the host should hang up and wait a few seconds before redialing the Personal Room.

12-hour limit

A scheduled Webex video platform version 1 meeting can't last for more than 12 hours. Hosts and participants can reenter the meeting, or can schedule a new one.

Truncated display names on video systems

If there is network bandwidth degradation on a user's video system, its video resolution may be reduced to a size that better accommodates the current network conditions. In that scenario, the display names of participants may appear truncated in the video endpoint active presence view. This is due to the lower resolution video for the video stream, which has a limited number of pixels to display the participant name.

In-meeting video experience

Starting in WBS33, Webex Meetings apps default to a filmstrip layout which requires that each participant be able to send thumbnail-quality video streams. Since Video Platform Version 1 only supports sending the active speaker video to Webex Meetings, Video Platform users will not have their video displayed in the filmstrip.

iOS meeting participants are able to view the video stream from video systems in 1 × 2 portrait mode only.

Video systems joining without encryption

If attendees join a meeting using video systems that do not setup encrypted signaling links or use encrypted media links, the meeting cannot be considered fully secured, since there are other devices whose connections cannot be secured.

Call leg security

The encrypted meeting status icon on video systems utilizing Telepresence Interoperability Protocol (TIP) or Call-Info security attributes does not reliably indicate the encryption status in meetings. Even when all call legs are encrypted, this icon may still indicate an unencrypted meeting.

Support for Microsoft Lync or Microsoft Skype for Business applications

  • Content that is shared in a Webex video platform version 1 meeting is transcoded into the main video channel for users on Lync and Skype for Business clients

  • Clients using RTV video codec is not supported, including Lync 2011 on Mac OS.

  • For users registered to a Lync or Skype for Business server, Polycom video devices aren't supported.

  • To ensure 2-way video in a meeting, users must select Video and then select Start Video on the application before joining the meeting.

  • After joining the meeting, users may need to select Start Video one more time.

Join meetings by dialing an IP address

For latest interoperability compatibility test results, please refer to the IP dialing section of the compatibility document:.

Known issues for using Webex Meetings video platform version 1 with Webex

  • Cisco Webex and Mozilla Firefox

    When Cisco Webex users in Mozilla Firefox share their screen, Webex users see a black screen, instead of the shared content. When Webex users share their screen, Webex users in Firefox can see the shared content.

  • Video call-back to IP Phone 8800 Series video phones registered to the Webex Calling service

    When you initiate a video call-back from the meeting to Cisco IP Phone 8800 Series video phones registered to the Webex Calling service, where the site is configured to require DTMF key 1 to connect to the meeting, this connection fails. The workaround for these devices is to disable the requirement to enter DTMF key 1 to connect to meetings.

  • Sending video from Webex applications to video conferencing systems or applications

    A Webex Meetings video always starts at the best video resolution between video systems and the Webex Meetings application. If high-definition video is available, it is available to all participants. If any participant on the Webex Meetings side experiences poor network conditions, the resolution between video systems and the Webex Meetings application downgrades to accommodate that participant. As a result, video resolution will also be poor for all other participants. The minimum bit rate a Webex Meetings application must process from the Webex Cloud to be able to receive both video and application or screen sharing (formerly called "desktop sharing") content is 1.2 Mbps. Less than that results in the Webex Meetings application showing only the shared application or screen.

    For information about recommended bandwidth configuration settings for Webex video platform version 1 meeting, see the Cisco Webex Network Bandwidth Technical Paper.

  • Presentation and data sharing quality

    If you do not have adequate bandwidth, your presentation and data sharing in Webex Meetings video can degrade to XGA (1024 x 768 resolution) and 5 frames per second (FPS).

    Assuming all Webex Meetings applications have at least 2Mbps bandwidth, users in the meeting can enjoy 720p content sharing at up to 5 FPS.

    If Webex Meetings applications have at least 3-Mbps bandwidth, the content share quality is 1080p at 3 FPS.

  • Full-screen video view

    When presenters switch to full-screen video view while sharing their screen, application, or document, sharing is paused on the attendee side (the last-shared screen freezes). When the presenter exits full-screen video view, sharing automatically resumes.

    Attendees stay in full-screen video view when the presenter stops sharing and automatically exit full-screen video view when the presenter starts sharing again.

    If the Webex Meetings desktop application has two monitors, users can display a full-screen view on one monitor and full-screen or application sharing on the other monitor by dragging the video window to the other monitor and selecting the "View all participants in full-screen view" icon.

  • Presenter may unintentionally disable video for all participants

    If a Webex Meetings user who is the presenter in the meeting unchecks the Video option in the Meeting Options dialog box, video is disabled for all meeting participants, whether they joined from a Webex meeting application or from a video conferencing system. To restore video for all participants, the meeting host or current presenter should check the Video option in the Meeting Options dialog box.

  • Other teleconference audio

    The audio connection option Other teleconference audio is not supported for Webex Meetings video conference meetings.

  • Webex Meetings features

    If you are hosting a meeting that includes video systems, the following in-meeting features are unavailable:

    • Whiteboard

    • Document sharing

    • Polling

    • File Transfer

For a list of compatible video systems and applications see Webex Meetings Video Compatibility and Support.