Mikkit a site by Envato has video footage that is free to download. No account or other log in is required, just search and download.
We found the collection is fairly small. Categories range from abstract and animation to transport and lifestyle.
All content is under the MixKit license. Our take on the licensing is it permits you to download, copy, modify, distribute, publicly perform and broadcast the Items. Rights are non-exclusive, worldwide, sub-licensable and attribution is not required (complete user terms are here).
Video files are: 1920×1080, .mp4 file format.
Troy @ TLC