Before posting to Facebook, make sure your video meets Facebook’s requirements:
To qualify for Facebook Reels, your video must be:
- Format: MP4 or MOV. Only video uploads are supported.
- Aspect ratio: 9:16 (Vertical)
- Description: Up to 2,200 characters
- Resolution: Minimum 540 × 960 px
- Duration: 3-90 seconds
- File size: Up to 1 GB