Video resolution

[Athletic l&c]

I don't mean to complain at a producer colleague . I'm just not so good at video resolution and such stuff and sometimes gets so disappointed when buying videos.

I wonder what you out there think is "High resolution". My last video is 1280 x 720, 19 minutes long and the filesize is 2148 mb. I don't write this one out as "High resolution". Is it H Res?

One site produce videos and also announce them as High resolution. But I always gets disappointed about the picture quality after buying them. His videos are usually 426 x 240 (he doesn't write that out) or 854 x 480 and for example 14 minutes and 577 mb. Can this be high resolution?

When can you call a video H Res? And what does that involve when it comes to size and so on? Am I making my video files unnecessary big? What is good enough?

Thank's for helping me clearing this out.