Which export option allows you to render multiple compositions and formats at once?

The ability to render multiple compositions and formats simultaneously is a feature of Adobe Media Encoder. This standalone application is designed to provide extensive rendering capabilities beyond what is available directly in After Effects.

When you use Adobe Media Encoder in conjunction with After Effects, you can queue up multiple compositions for export and specify different formats and settings for each one. This versatility is particularly useful for workflows that require exporting various outputs in different formats without the need to return to After Effects each time.

In contrast, the Render Queue in After Effects allows you to render compositions one at a time within the After Effects environment. Although you can queue multiple compositions in the Render Queue, the export options are limited to the formats available in After Effects.

QuickTime Export is specifically limited to exporting compositions in the QuickTime format and does not provide the flexibility to handle multiple formats or compositions at once efficiently.

File Output Settings are part of the overall settings within either the Render Queue or Media Encoder and do not refer to a method of exporting multiple compositions simultaneously.

Thus, Adobe Media Encoder stands out as the best choice for managing batch exports of various compositions and formats concurrently.