The video player on the website and download "pieces"

On many video-sharing websites like Youtube\\Vimeo player loads video is not all, as in "pieces". On Yandex, for example will only be loaded Tricomi and the next "piece".
Clearly this can be seen for example in the network tab in the browser.

Very interested in what software you can organize the videos in a similar way?
I understand it must be a video specially prepared\converted in a special way, as well as flash player on the site who knows how this all work.
Interested in any paid\free solutions.
October 3rd 19 at 12:59
1 answer
October 3rd 19 at 13:01
You can use for free (with some limitations)
such a wonderful player
On the website a bunch of documentation and examples.
What you ask is called streaming
Specifically to convert video in most cases is not necessary,
an example of such a plugin can work with MP4:

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