"Conferences" section

In this section, you can schedule video conferences and adjust their settings. Here you can do the following:

  1. Create a new video conference.

  2. Find a conference created before.

  3. Start a conference.

  4. Edit the selected conference.

  5. Create a copy of the selected conference.

  6. Delete a conference.

  7. View information about a particular conference:

    • Conference PIN (if set)

    • Scheduling mode

    • Date and start time.

8. View a list of invited participants and adjust additional settings for them.

You can create only all-on-screen conferences where all participants can see and hear each other. The maximum number of participants (up to 150) depends on your license.

When selecting an active video meeting, you can access the conference management section. More information about this section is provided below.

Creating a conference

Click Create conference or /mcu/media/create_conf/en.png to proceed to the conference creation page.

"General" tab

In this section, you can schedule video meetings and adjust their settings. You may have to take the following steps:

  1. Specify the conference name.

  2. If the Request PIN to join the conference box is checked, a random PIN will be generated. In this case, participants will need to enter the PIN. The PIN can also be added to the call string . If you want to generate a new PIN, click on the /mcu/media/generate_pin_btn/en.png button.

  3. A virtual room is created by default. It is possible to choose between the following scheduling modes:

    • Do not repeat - set scheduled date and time.

    • Daily - set the start time. You can also set the recurrence limit after the number of repetitions or on a specified date.

    • Weekly - set the start time and choose the day(s) of week for repeating the meeting. Setting the recurrence limit is similar to Daily mode.

    • Monthly - choose the recurrence date(s) or days of week

    • Custom - select specific dates for a meeting.

4. If you check the Set time limit box, you will create a scheduled meeting with the start and end date.

The administrator can manually start a scheduled conference ahead of time.

5. Select the maximum number of participants.


6. Check this box to make sure that participants can be re-invited to the conference if the connection is lost. If the operator of a video conferencing server disconnects a participant on purpose (via web interface), auto dialing will be disabled for this conference session.

7. Display volume level in the video windows.

8. Enable the display of participants' names during a meeting.

8. Check the box, so meeting participants will automatically be muted upon entry.

9. Check the box, so meeting participants will join the conference with their video disabled.

11. Enable users to share content.

12. Check this box to lock a video conference from new participants (they can be added only by the administrator).

13. To stream a conference to external RTMP sources over the Internet, enter the URL address of an RTMP server.

14. Enable recording when at least one participant joins the conference.

15. Disable recording when all the participants leave the conference.

Below you will find examples of recurrent events for different modes of scheduled conferences.

  • The conference is held every week on Wednesdays and Fridays from 3:00 till 4:30 p.m. The event ends in 5 weeks (i.e. 10 conferences are held):

  • The conference is held from 3:00 till 5:00 p.m. on the first Tuesday and last Thursday of each month. The events ends after October 7, 2021:

  • The conference is held on two different manually specified dates and time slots:


"Participants" tab

In this section you can check the number of invited conference participants. New participants can be selected and added in the server address book.

  1. Add a new participant. Users can be selected separately or in bulk. Then, you can view the list of added users.

  2. Find a user by name.

  3. View information about an invited participant.

  4. Enable/disable a participant's camera.

  5. Mute/unmute the microphone.

  6. Enable/disable speakers.

  7. Mute conference audio for a selected user.

  8. Disable automatic redial if the connection is lost.

You can enable automatic redial participant feature for all participants in the General tab on the conference creation page.

9. Control participants' AV devices (speaker volume, microphone sensitivity levels, echo cancellation and automatic gain control).

10. Remove a participant from the conference.

"Layouts" tab

Here, you can set a conference layout. The following layout types are available:

  • For all participants is a standard conference layout displayed to all participants who don't have a custom layout, e.g., it will be displayed to a participant who joined the conference using a PIN.

  • Individual layout can be configured for any participant when you create a conference or in real time during an ongoing conference. Real-time layout changes apply only for an ongoing conference, so once the meeting ends, the layout will disappear. Every participant can have only one custom layout.

  • Recording and streaming is the layout used when recording and streaming a conference.

  • Active speaker is a layout displayed to a participant speaking at the moment. It will be possible to select video windows that will be displayed to the active speaker.

To use the layout, you need to add the Active speaker window to other layouts created for this conference.

We suggest using individual layouts as little as possible during a conference to save server resources.


In the Layouts section, you will be able to:

  1. Create a new layout.

  2. Check the Automatic layout box, if you want the layout to be generated automatically depending on the number of participants invited to a conference.

  3. Check this box to remove a participant's self-view from the layout.

This setting will significantly increase the CPU load for the computer where TrueConf MCU is installed.

4. Select a conference layout.

5. Mark this checkbox to use an overlay layout.

  1. Select the layout type.

7. Choose the number of video windows in the layout.

Click Fill windows automatically if you do not want to add participants manually.

Click Reset all windows to discard all changes in the layout settings.

10. Specify the type of the selected video window. You can select among the following types:

  • Empty: the window will remain empty and will be used for a participant who may be invited during an on-going conference.

  • Fixed participant: one of the participants will be permanently displayed in the selected window.

  • Active speaker: the participant, who is speaking at the moment, will be displayed in the selected window.

  • Autofill: one of the conference participants added automatically will be displayed in the video window.

  • Content: the window will be used for displaying the content shared by participants, e.g., desktop or slides.

11. Mark this checkbox to shuffle participants automatically

This feature is available only for the participants who were added to the layout using the Autofill function.

12. Select a video scaling mode for layout windows:

  • Crop video — this mode is intended for displaying the maximum number of windows in the layout.

  • Don’t crop video — in this mode, a participant's video is scaled to fit the layout windows. In this mode, the video is not cropped which helps to improve MCU performance when rendering the layout.

  • Autofill: the server will automatically determine the most optimal video scaling mode.

For the sake of convenience, TrueConf MCU provides a large variety of layouts:

Flexible layouts

You can add any number of video windows in the layout


Overlay layouts

This layout shows a full-screen window with multiple thumbnail windows laying on top of it.


Predefined layouts

Only a predefined number of video windows can be added in the layout.


"Audio Channels" tab

In this section, you select attendees (participants who only receive audio) and presenters (those who can send audio).

  1. Add a new audio channel.

  2. Add attendees. You can select multiple or all users as attendees. Please note that a user can be added as an attendee only to one channel.

  3. Search for attendees by their names.

  4. View information about attendee.

  5. Remove a user from the selected channel.

  6. Add a presenter. The audio stream from this participant will be received by all attendees. A user can be a presenter in multiple channels.

  7. Search for presenters by their names.

  8. View info about the selected presenter.

  9. Remove a presenter from the selected channel.

“Skins” tab

The features available in this table are described in the Skin styles section.

"Additional" tab

In this section, you can change audio and video settings. You can make the following adjustments:

  1. Enable/disable noise cancellation.

  2. Enable/disable automatic gain control (AGC).

  3. Select audio codecs used in a conference.

  4. Adjust video stream resolution and frame rate.

  5. Select a video scaling mode.

  6. Enable/disable participant avatar display in the conference layout (an avatar will be displayed in the pre-defined layout when the connection is lost or when a participant disables the camera).

  7. Select video codecs.

Disabling some codecs can solve compatibility issues with some SIP endpoints. To learn more about this question, please contact our technical support team.

Joining a conference

For TrueConf users

TrueConf users can join a conference hosted on TrueConf MCU using the following call string formats:

1. Via SIP protocol (if its use is enabled):

  • #sip:<pin>@<server_name>, where:

    • <server_name> the DNS or IPv4 address of the PC where TrueConf MCU is installed on.

    • <pin> is a conference PIN.

  • #sip:@<server_name>,<pin>#, where:

    • <server_name> the DNS or IPv4 address of the PC where TrueConf MCU is installed on.

    • <pin> is a conference PIN.

  • #sip:@<server_name>, where:

    • <server_name>the DNS or IPv4 address of the PC where TrueConf MCU is installed on. In this case, a participant has to enter a PIN with the dialer to join a conference.

2. Via H.323 protocol (if its use is enabled):

  • #h323:<pin>@<server_name>, where:

    • <server_name> the DNS or IPv4 address of the PC where TrueConf MCU is installed on.

    • <pin> is a conference PIN.

  • #h323:@<server_name>,<pin>#, where:

    • <server_name> the DNS or IPv4 address of the PC where TrueConf MCU is installed on.

    • <pin> is a conference PIN.

  • #h323:@<server_name>, where:

    • <server_name>the DNS or IPv4 address of the PC where TrueConf MCU is installed on. In this case, a participant has to enter a PIN with the dialer to join a conference.

If a user calls to TrueConf MCU without a PIN (using #h323:@<server_name> or #sip:@<server_name> call string format), he/she will get into the Pending connections column until entering the PIN or being added to the conference by the administrator.

For SIP/H.323 endpoints

To call a TrueConf MCU conference from a software or hardware endpoint via SIP or H.323, please use one of the following formats:

  • <pin>@<server_name>, where:

    • <server_name> the DNS or IPv4 address of the PC where TrueConf MCU is installed on.

    • <pin> is a conference PIN.

  • @<server_name>, where:

    • <server_name> the DNS or IPv4 address of the PC where TrueConf MCU is installed on.

Online video conferences streaming

With TrueConf MCU you can stream your video conferences using popular streaming services: Wowza, YouTube, CDNvideo. More information about setting video conference streaming is provided below.

Wowza Streaming Cloud streaming configuration

  1. Go to Wowza Media Systems https://wowza.com (opens new window) website. If you don't have an account, please sign up.

  2. Open Wowza Streaming Cloud http://cloud.wowza.com/ (opens new window) service webpage. Sign in using the account from the step 1. In the top menu bar, select Add Live Stream and you will see the opened Live Stream Setup section.

  3. Enter the conference name, select the nearest location from the list and click Next.

  4. Complete the following steps in the Video Source and Transcoder Settings section:

    • Select Other RTSP as a camera/encoder.

    • Select Push Stream streaming mode.

    • Check Disable authentication and click Next.

5. In the Playback Settings tab, you can configure the type and size of the web page player, a countdown timer, a background and a logo. You can also leave the default settings unchanged.

6. In the Hosted Page Settings, you can choose if the stream should be placed on the Wowza Streaming Cloud or on a different website. You can also select a title and a logo, provide a short description, and choose the social network icons to be displayed. You can also leave the default settings unchanged.

7. Check settings in the Review Settings section and click Finish and you will the stream page.

8. Copy an RTMP URL from Source Connection Information for MCU in the following format rtmp://<wowza-ip-address>:<host-port>/<application>/<stream-name>, where:

  • <wowza-ip-address> is the IP address of a streaming server.

  • <host-port> is the connection port.

  • <application> is the application name.

  • <stream-name> is the stream name.


    For example, the RTMP link will look like:


9. Click Start Live Stream to start capturing the live video.

10. Start the conference and launch streaming.

11. Go to the stream page on Wowza Streaming Cloud and click Open near the Hosted Page URL address, so you can check the streaming in an opened web page with the broadcast window.

YouTube streaming configuration

  1. Sign into YouTube (opens new window) using your Google account.

  2. Click the /mcu/media/youtube_add_video_button/en.png icon in the right upper corner.

  3. Select Go live and you will see the stream control panel.

If you create a live stream on YouTube for the first time, you will see a channel creation pop-up. Click Get started and you can configure additional parameters (channel name, avatar, description, links to your website and social network accounts). Then, click Go live which appears in the upper right corner of your channel page. You will see a request to confirm your account using your phone number. After confirmation, you will be able to stream within 24 hours.

4. Go to the Stream tab and complete the following steps:

  • Specify stream parameters (name, category, access, type).

  • Select No, it's not made for kids.

5. Click Create stream.

6. On the opened stream page , you can set your own stream key by specifying the maximum bitrate and FPS, or leave the default settings unchanged.

7. Generate an RTMP link for MCU in the rtmp://<stream-url>/<stream-key> format, where:

  • <stream-url> is a streaming URL

  • <stream-key> is a streaming key


    Example of an RTMP link:


8. Start the conference and launch streaming.

9. Please wait until the Go live button on the YouTube stream page becomes available and press it to go live.

CDNvideo streaming configuration

  1. Go to CDNvideo https://www.cdnvideo.com/ (opens new window) website. If you don't have an account, please sign up.

CDNvideo service provides a paid license (available for a two-week free trial). For more information, proceed to CDNvideo pricing web page (opens new window).

2. Sign in the personal area https://dashboard.cdnvideo.com/ (opens new window). Select Live streaming in the service list.

3. Press player code and encoder configuration in the RTMP-publish section.

If there is no such section, add the RTMP publish feature with the Add service button under the Live streaming service.

4. In the opened Encoder settings and Player code window of the Encoder settings section, select any encoder, e.g. FMLE.

5. Generate an RTMP link for MCU in the rtmp://<stream-url>/<stream-key> format, where:

  • <stream-url> is a streaming URL

  • <stream-key> is a streaming key


    For example, an RTMP link will look like:


6. Start the conference and launch streaming.

7. You can test the stream in the Encoder settings and Player code window from the CDNvideo personal area, in the Player code section by running a video in the Translation : default sector.

Launching a stream on the MCU side

  1. Specify the RTMP streaming address when creating a conference.

  2. Start a conference.

  3. Select the conference you need in the active conferences and start streaming with the /mcu/media/mcu_start_stream_button/en.png button. The button will be available only if the RTMP server URL field (conference creation section) had been previously filled when the conference was created. If streaming starts successfully, the button will flash red.

Monitoring an active conference

If you click on any active conference held on TrueConf MCU, you can see the conference management window.


In this section, you can view the following information about ongoing conferences:

  • Conference name

  • Number of participants

  • Conference duration

When hovering a cursor over any conference, you can see the /mcu/media/stop_conference/en.png icon to stop the conference.

When you select any meeting from the Conferences list, on the left you can see the control panel that allows you to:

  1. Set the conference video layout.

  2. Create and adjust settings for conference audio channels.

  3. Edit ongoing conference parameters.

  4. View the conference information:

    • PIN

    • Schedule

    • Duration

    • Conference start time and end time (or only start time for virtual rooms)

    • Content sharing permissions.

5. Start/stop conference recording.

6. Send a message to chat.

7. Start/end content sharing (.png, .jpeg, .bmp, .mkv and .mp4 formats are supported).

8. End a conference.

9. Search for conference participants.

10. View information about a conference participant.

11. Enable/disable a video stream from a participant.

12. Mute/unmute a participant's microphone.

13. Enable/disable audio receiving by a participant.

14. Enable/disable video receiving by a participant.

You can also enable/disable receiving and sending audio/video streams for multiple conference participants simultaneuously. Just select them and the device configuration panel will appear at the top of the list.


15. Preview a participant's camera video, shared content or individual layout. You can also request control over the participant's camera.

16. If it is necessary, you can change:

  • Dipslay name(the name showed during a conference)

  • Audio settings (sound volume and microphone sensitivity)

  • Call details (data about incoming and outcoming video streams).

  • Tone dialing (DTMF) — sending DTMF commands to a participant's endpoint. In this pop-up, you can also preview video from a participant's camera.

17. Enable Important Participant mode, so a user could be displayed in an enlarged window.

18. Disconnect a participant from the conference.

19. Redial the disconnected user.

If the disconnected participant isn’t listed in the address book, you can add this user by clicking the /mcu/media/add_icon/en.png icon near the participant’s name.

When participants either leave the meeting or are removed by the administrator, their status is indicated either as Left the conference or Removed by the administrator.


If a conference participant shares content, you will see the video stream info and the forced stop presentation icon under the participant’s name.


Adding a new participant

You can add new participants to an ongoing conference on the fly.

  1. Search through the lists of users.

  2. Select users from the following lists:

    • Address book contacts — all other users listed in the address book.

    • Busy (in other conference) — users who were invited to the conference, but are currently unavailable because they are taking part in other conference. When participants are moved from one conference to another, the administrator can adjust settings of their AV devices (e.g., mute their microphones).

3. Invite a user via a call string. You can find available formats in the section on how to add contacts to the address book.

4. Add pending users who are waiting for the admin’s approval to join the conference.