Media Encoder is changing my dimension by a pixel

You have a misunderstanding of video compression. If you want a compressed file, especially an intraframe (MPEG H.264) for distribution and you are going to play that file with a media player the frame size must be an even number of pixels and better yet, evenly divisible by 4. Odd numbers are not allowed because the compression software works on groups of pixels that contain at least 4 pixels. There is no workaround except to render to a lossless format that does not care what the frame size is.

You also don't want to send odd pixel sized artwork to the web because there is a very high likelihood that the image will soften more than an even-numbered pixel image will when it is scaled with a style sheet. You cannot center an image on a web page and have the pixels line up if it is an odd number of pixels high or wide. The entire image will be resampled and the quality will degrade.

So there is no fix for that frame size. In almost every case you are much better off designing your projects for standard frame sizes. The only notable exception is digital signage displays that have odd sizes and use custom players. Every standard media player will default to one of the standard aspect ratios. There is no way to force them to display anything else. None of them respond well to a frame size that has an odd number of lines or rows.

H.264 can't render to an odd pixel number. It has to be even.