The only tool on LDS.org that would work for this is the Newsletter tool. You can indeed put a video there, but only with significant restrictions. First of all, no video file type is allowed as an attachment to a Newsletter article. But you can get around that by embedding a video in a PowerPoint (you can attach a PowerPoint presentation to a newsletter article). The other limitation is that attachments can be no larger than 5MB. That would require a fairly small (reasonably short and reasonably low resolution) video.
The other option is to host the video somewhere else, and then to simply put a link in a Newsletter article.
Questions that can benefit the larger community should be asked in a public forum, not a private message.