Unwanted Gray Top & Bottom Border appearing after export via Media Encoder

[hopeguns]

Hello community. Hoping for a miracle. When I export my scene from Character Animator through Media Encoder, it's adding a faint gray top & bottom border to my mp4 file. I'm using the H.264 format and the "Match Source - Adaptive High Bitrate" preset. The lines are only really visable if i drop the video on a white background, which is exactly what I need to do. I can't figure out how to get rids of these lines no matter what I try. Has anyone else had this problem? 

Here's what they look like: 

 

[davidarbor]

What is the height of your comp? Is it an odd number? If so, try making it an even number. Alternatively, you could export as ProRes 4444 to export your character with an alpha channel (transparency) so you can move it wherever you want and put it on any background color without having to re-render.

[hopeguns]

Thank you for the suggestions. My comp is already an even number in both
height and width. And unfortunately I can't export with ProRes 4444 because
Capitvate won't accept it. I need to export an MP4. Any other ideas?

[davidarbor]

Ah, gotcha. Are you able to crop the video in Captivate? It's been many years since I've used it and can't remember. 

Also, what's your Character Animator comp resolution? If on the lower side it might be worth increasing the quality, exporting a high quality file like ProRes 422 (really ProRes LT or even Proxy would be perfectly fine for this type of file) and then converting it to H.264 after.