How to track html5 video loading?

Question

JavaScript

Hello. There was a question, how to track the download of the video? Tried dataloaded, but it fires when loading the first frame and beyond. I'm not sure that this way you can track the full download of the video. Comrades, tell me! Thank you.

Answer 1

Here is comprehensive information: https://www.w3schools.com/tags/ref_av_dom.asp

Answer 2

As far as I remember, the joke there is that there is no unambiguous event - that they say, 100% loaded!
There are all sorts of canplays that only report what can be shown (cached enough).
There are all sorts of buffers (of which there may be several - if, for example, you poked the mouse over the timeline) - and they can be loaded in parallel.
So you have to either think like them, or pervert, compare, for example, duration and buffered ...