Video Templates - What They Are & How To Use - Envato Elements
Sample Video Files - Download Example Video Formats
Resize, crop, and other common video transformations - ImageKit.io Docs
Video Clips Video Mp4 Converter [I.S.A] download | SourceForge.net
Sample Video 1280x 720 2mb : Free Download, Borrow, and Streaming : Internet Archive
GitHub - chthomos/video-media-samples: Three different versions (480p, 1080p, 1080p@60fps) of mp4 encoded (H264/AAC) 30 seconds version of Big Buck Bunny for test with browser media
Big list of sample videos for testers - standaloneinstaller.com