There are two different things to understand:
Internet speed
Speed indicates how quickly data reaches your device.
It is generally measured in Mbps.
Streaming can work with around 10 to 15 Mbps in some cases, but for comfortable use we generally recommend around 45 Mbps or more.
Network stability remains just as important as speed.
The amount of data used
Streaming also uses a certain amount of data while you watch.
This usage is measured in MB / GB.
The higher the video quality, the more data you use.
As a general guide, one hour of video can use approximately:
- low quality / SD: less than 1 GB;
- HD: around 1 to 3 GB;
- Full HD: a few GB;
- 4K: several GB per hour.
These figures can vary widely depending on the service, compression and selected quality.
Be careful with mobile data
On a phone or tablet, watching a lot of video with mobile data can quickly use a large portion of your mobile plan.
In Canada, where some data plans remain limited or expensive, it is best to use Wi-Fi whenever possible when watching a lot of video content.
A simple example
A connection can be fast enough to watch a movie perfectly while still using several gigabytes of data during that movie.
Speed and data usage are therefore not the same thing.