How do you export a video with a transparent background?

To export a video with a transparent background, you must use a format that supports alpha channels, and enabling the "Render at Maximum Depth" setting ensures that the transparency is preserved in the exported file. Formats such as QuickTime with the animation codec or ProRes 4444 are ideal because they retain the transparency information, allowing the background to remain clear when the video is played back or overlaid in other projects.

Choosing a standard mp4 format does not work for this purpose since the standard H.264 codec used in mp4 files does not support alpha channels; thus, you would lose the transparent background. Lowering the frame rate or adjusting brightness settings does not relate to preserving transparency and would not affect the export's ability to maintain an alpha channel. Hence, the right approach involves specifically selecting the appropriate settings that cater to transparency needs.