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: An open-source option for manually embedding thumbnails into MP4 containers. 2. Video Overlay and Editing Features

: For business pages, you can upload MP4 videos as covers. Essential tips include using high-bitrate exports and adjusting the "CTA arrow" to ensure it looks good on both mobile and desktop. How to overlay a video on video! (EASY) 32.mp4

If your goal is to "cover" one video with another (overlaying): : An open-source option for manually embedding thumbnails

: A powerful tag editor that allows you to batch edit metadata and add cover images or album art to your videos. 32.mp4