Chat&Messenger Web Conference We will explain the amount of traffic that will be applied to the in-house center router within the organization when this is done.
Audio and Camera・Comparison table for document sharing
When a web conference is held, the following traffic will be generated on the in-house center router, etc.
| 5 user | 10 user | |
|---|---|---|
| Audio only | 0.2 MByte/s | 0.7 MByte/s |
| Audio and Camera | 4.0 MByte/s | 8.0 MByte/s |
| 1 user documents shared, others audio/camera off | 0.07 MByte/s | 0.3 MByte/s |
- Each organization should establish its own policy on how many web conferencing sessions can be used simultaneously, taking into consideration internal router limitations within the organization.
- For example, in the case of 10-user voice and camera, if the server side generates 8.0 MByte/s of traffic and the center router has a 100 MByte/s limit, the maximum number of simultaneous conferences should be kept below 10.
- Facility Reservation Function Large-scale meetings can be controlled by reserving and conducting them as a whole using the
- On-premises CAMserver When measuring, use the OpenJDK Platform Binary network usage fee in Task Manager as a guide.
The approximate amount of communication required on the client side (one PC) is
In this case, the easiest way is to measure using Windows Task Manager. The following shows that when 10 people participate in a web conference and one person shares materials, the average communication amount per PC is about 0.3Mbps.
Bitrate guideline
Adjustment of resolution and frame rate
For Chat&Messenger web conferences, camera resolution is limited to low traffic by default for 5 or 10 users. To change this, go to the "Web Conference SettingsPlease use "
Achieving the lowest traffic in the industry
Bitrate guideline calculation formula when camera is used
Here is a guideline for calculating the bit rate (kbps) - the amount of data sent over the network by the sender (encoder). In real-time communications such as WebRTC, this is dynamically adjusted according to bandwidth restrictions, network conditions, and people's movements, but the general guideline is as follows:
Bit rate (bps) ≒ Number of resolution pixels × Frame rate × Motion factor × Compression factor
- Resolution: 180-1080p is recommended. 180p is 320 x 180, which is 57,600 pixels.
- Frame rate: 5 to 30 fps
- Motion coefficient: The amount of change between frames in the video, such as human movement. Low: 0.07 - High: 0.12
- Compression coefficient: For Chat & Messenger standard VP9, the approximate value is 0.07 to 0.1
The average video bit rate (kbps) sent by the sender to the network is as follows, and the receiver basically consumes the same amount of bandwidth (one sender and multiple receivers depending on the number of participants).
| resolution | Resolution Size | Number of pixels | Bitrate guideline (kbps) | Estimated number of participants with cameras |
|---|---|---|---|---|
| 540p | 960 × 540 | 518,400 px | Approximately 370-520 kbps | Up to 4 people |
| 360p | 640 × 360 | 230,400 px | Approximately 160-230 kbps | Camera-equipped conference for 5 to 9 people |
| 180p | 320 × 180 | 57,600 px | Approximately 40-60 kbps | Camera-equipped conference for 10 or more people |