The quality of your live playback experience is largely dependent on the download speed you have from your ISP (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 ISP.
In this article:
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 |
Desktop OS and Browser
In addition, we recommend using the following browsers and versions on Windows 7 or later or macOS Sierra (10.12.6) or later:
- Chrome 30+ (has automatic updates)
- Firefox 27+ (has automatic updates)*
- Microsoft Edge
- Safari 9+
*H.264 video (required for viewing ZenVideo videos) is only supported in Firefox for Windows 7 and later. Firefox versions on Windows XP are no longer supported for playback.
Firewalls and whitelisted domains
Viewers should ensure the following ports are open on their network for playback:
- TCP/UDP 80 (HTTP)
- TCP/UDP 443 (HTTPS)
In addition, if your viewers are on a corporate network (office, university, hotel, etc.) that restricts access to certain websites or domains, they should have the following domains whitelisted:
- *.vhx.tv
- *.vimeo.com
- *.vimeocdn.com
- *.akamaized.net
- *.cloudfront.net
Mobile devices
Mobile viewers can use Android (Lollipop) version 5.0+ or iOS version 12.4+.
⚠️ Blackberry and Windows phone users: You may still able to view ZenVideo videos on devices that support HTML5; however, we do not test out our player in these environments and thus cannot guarantee support.
⚠️Samsung users: The Samsung Internet browser (all versions) is not supported for ZenVideo Live. We recommend installing Chrome instead.
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