those videos are not in steam but stored on my computer and my question was how to get that video to steam

You upload them to youtube and then post the link to the video in a discussion.

It's not a video I want to post on YouTube, but a problem I want to add to the discussion. I'm afraid my video will appear on YouTube.

If you're looking for a way to embed video in discussion, you can't unless you use youtube.

Might want to make video invisible without link so it only links to this discussion like you're asking for. It honestly doesnt matter if you embed a video here or on yt, it's public either way with 10 views.

If you don't want to use YouTube, the other option for videos that embed on the forums is Vimeo.

引用自 ᴠᴀʀ：

If you're looking for a way to embed video in discussion, you can't unless you use youtube and upload as invisible video without link.

Incorrect.

https://vimeo.com/559029274

Thank you all very much. If I get stuck in a game or see a problem with a game, I report it through discussions. Now I know how to upload a video via YouTube and post it in discussions. Thank you all very much again.