Bluesky now supports video sharing, allowing one video per post up to 60 seconds long in formats like .mp4 and .mov. Users can upload 25 videos or 10 GB daily. Videos autoplay by default, can have subtitles, and are scanned for content warnings.
https://alternativeto.net/news/2024/9/bluesky-adds-video-sharing-to-the-platform-with-subtitles-and-autoplay-options/