Given these points, you cannot simply right-click and "Save Video As" on Nitter (just as you cannot on Twitter). But there are several reliable workarounds.
General-purpose video downloader extensions can often detect the video stream from a Nitter page. Video Downloader Professional : A widely used Chrome Extension that detects media files once you start playing the video. : Highly effective for Nitter because it can detect HLS (M3U8) how to download videos from nitter
Click that file name and look for the "Request URL" or "File URL." Copy that link and paste it into a new browser tab. (Note: If it’s an .m3u8 link, you might need a free online converter to turn that stream into a downloadable MP4, but often Nitter hosts direct MP4s). Given these points, you cannot simply right-click and
Nitter is an open-source, privacy-respecting interface for Twitter that doesn't require JavaScript or cookies. It allows viewing tweets, videos, and images without tracking. Video Downloader Professional : A widely used Chrome