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How the "Content Provider" affects your Internet experience.

1. Content providers like YouTube, Netflix and Hulu provide allot of video to the world. This requires a large amount of bandwidth that they purchase from their ISP for. If the provider is getting more requests than their bandwidth can handle, your video will buffer. (show me)

2. Avoid watching videos during peak times. According to the FCC, peak times are from 7:00 pm to 11:00 pm local time. If this is causing your video to buffer, try watching the video during non-peak times. Sometimes you just need to wait a few minutes.

3. Make sure your Internet connection is fast enough for your content providers minimum bandwidth requirements. Here is a table to give you 'an idea' of how video quality affects the amount of speed you will need.
Quality: Minimum Recommended Standard Def. High Def. Ultra HD 4k Online
Resolution: 360p 480p 720p 1080p 2160p Gaming
Netflix 500 kbps 1.5 Mbps 3.0 Mbps 5.0 Mbps 25.0 Mbps n/a
Hulu 1.5 Mbps 1.5 Mbps n/a n/a n/a n/a
YouTube 500 kbps 1 Mbps 2 Mbps 4-6 Mbps n/a n/a
Xbox 360 n/a 1 Mbps 3.5 Mbps n/a n/a 3 Mbps

*Recommended speeds are for one device.
4. Error codes give you a great clue on the solution to your video issue. If you receive an error or experience "buffering", locate the content providers help center, and search for the error code or search for how to 'lower the video quality'. Here are links to frequently used content providers: