The quality of your live playback experience is largely dependent on the download speed you have from your internet service provider or mobile provider.
Keep in mind that your overall Internet speed can vary depending on many factors, including but not limited to: time of day, Wi-Fi performance, other devices/users utilizing your connection, and the strength of the signal provided by your provider.
Browsers and operating systems
In order to have a smooth experience watching a live video, you should make sure the device you're on meets these requirements:
| Browser | Operating System | Version |
| Google Chrome | OSX 10.12.6 or later, Windows 7 or later, Android 5.0+ | 69+ |
| Mozilla Firefox | OSX 10.12.6 or later, Windows 7 or later | 58+ |
| Safari | OSX 10.12.6 or later, iOS 9.3.5+ | 10+ |
| Microsoft Edge | Windows 7 or later | 15+ |
- Supported mobile browsers: Chrome 45+, Safari 10+ (iOS)
- Samsung users: The Samsung Internet browser (all versions) is not supported for live streams. We recommend installing Chrome instead.
Please be advised that browsers on Smart TVs are not supported at this time.
Download speeds
The following table shows the minimum speeds required for each playback quality:
| Quality | Required Minimum Bandwidth |
| 240p | 500 kbps |
| 360p | 1 Mbps |
| 720p | 3 Mbps |
| 1080p | 7 Mbps |
| 2K | 12 Mbps |
| 4K & up | 22 Mbps |
Firewalls and whitelisted domains
If you're using a firewall service (e.g. a corporate or school network) and/or have restricted domains, you may need to whitelist a few ports and domains in order to watch your live event. Viewers should ensure the following ports are open on their network for playback:
- TCP/UDP 80 (HTTP)
- TCP/UDP 443 (HTTPS)
The following domains should be whitelisted:
- cdn.livestream.com
- api.new.livestream.com
- playback.akamaized.net/*
- livestream-f.akamaihd.net/*
- secure-playlist.livestream.com/*
- *.akamaized.net
- *.cloudfront.net
Search the Help Center to find answers or, if you're still having trouble, email digital@theclass.com.