Cant figure out how i'm supposed to post the clip. Tried using the attachment tool and it doesn't upload. What method would be acceptable?

I used the snipping tool for the screen shots when posting and didn't mean to cut off anything. When i win+prtsc and try to upload it tells me the file resolution is too big and wont let me. I remade them with snip tool to show the whole screen and the timeline bar showing that its from a clip.

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