We can post a photos or a video:
Photo: Materials File and Image size: 1080×1080 or less. File size less than 8MB. The higher the quality, the better. If your file is not that size you can use pablo or tinypng to crop and compress.
File Size: Creative can be up to 1MB
Video: 3-60 seconds, File type: .mp4, Max image size: max 4 GB, Video aspect ratio: 1.9:1 to 1:1
Note: No YouTube or Vimeo links. Correct file size and length should happen on the video production end.