Are both x.com and twitter.com links supported?
Yes. Downvio recognizes current X URLs and legacy Twitter post URLs.
Why is an animated GIF downloaded as MP4?
X frequently stores animated GIF posts as looping MP4 video for more efficient delivery.
Can protected-account videos be downloaded?
No. The post must be publicly accessible without an authenticated X session.
Does Downvio convert any video file to MP4?
No. Downvio is a link-based social media downloader, not a general file converter. It retrieves an available MP4 stream or combines compatible source tracks when supported; it does not accept arbitrary MOV, AVI or WebM file uploads for conversion.
Why does an X post with a video preview return no media?
A preview can point to a video hosted on another website. Open the post and check whether the video belongs to X or is an external link; a preview alone does not mean X supplies a downloadable file.