The amount of bandwidth that GoToWebinar uses during a session will vary on the features that are being used. For example, screen sharing will use more bandwidth during a PowerPoint presentation with multiple slide changes than it will when a single image is being shown. Also see How do I speed up my internet connection?
In general, it's recommended that you have at least 1 Mbps of bandwidth available if you plan to use all 3 of the features listed below during a session. Less bandwidth will still work, but the session performance may suffer because of it. More bandwidth will provide a superior experience.You can estimate the amount of bandwidth a session will require using these data-usage averages:
- Computer audio (VoIP): 0.04 Mbps (40 Kbps)
- Webcam sharing (HDFaces): 0.7 Mbps (700 Kbps) to 2Mbps, depending on number and size of webcams in use
- Screen sharing: 0.04 Mbps (40 Kbps) to 8 Mbps, depending on the size and rate of changes happening on screen
Note: Both webcam and screen sharing will automatically reduce their usage (by reducing the frame rate, etc.) if the available bandwidth requires it.
Note: This is based on the ISP unit measurement standard for Data Transfer Rates (Bits). This is not to be confused with the unit measurement standard for Data File Size (Bytes). 8 Bits = 1 Byte.