Use the matching tool to start straight away. The download begins in your browser and shows its size and progress on the page.
A post link looks like x.com/username/status/ followed by a long number. Copy that exact link. Links to profiles, lists, spaces and search results do not point at a video. If the post quotes or replies to another post that contains the video, open the post with the video itself so the address is the right one.
X stores each video at multiple bitrates so it can adapt to your connection. That is why you will often see choices such as 480p, 720p and 1080p. Picking the highest one gives the best picture, while the lowest is useful for sharing in a group chat. File sizes next to each option let you decide without downloading first.
When you tap a GIF on X, you are actually watching a short looping MP4 with no sound. Downloading it gives you that small MP4, which is sharper and far lighter than a true GIF file. If you really need the old GIF format for a forum or presentation, convert the MP4 afterwards with the video to GIF converter, or see the Twitter GIF downloader page.
Posts from protected accounts need a login, so they cannot be fetched. Videos hidden behind a sensitive-content warning may also ask for sign-in. Deleted posts and videos removed after a copyright complaint are gone for good. If a post plays when you are signed out, it should work here.
Spaces highlights, interviews and speeches work well as audio. The Twitter to MP3 tool extracts the soundtrack as a 192 kbps MP3 that is smaller than the video and easy to play anywhere.
A post being public does not give you ownership of the video inside it. Keep downloads for personal use or for content you have permission to repost, and credit the original poster when you do share. Removing a watermark or username to pass a clip off as yours is a good way to get a takedown.