Error while run Enhancer

[tnfsmith]

WARNING:imageio_ffmpeg:IMAGEIO FFMPEG_WRITER WARNING: input image is not divisible by macro_block_size=16, resizing from (256, 255) to (256, 256) to ensure video compatibility with most codecs and players. To prevent resizing, make your input image divisible by the macro_block_size or set the macro_block_size to 1 (risking incompatibility).
The generated video is named ./results/e363c905-e6d2-4155-8c9d-2220bedd479f/tmpcvh69m1j##Bai hoc 6 Dam nghi dam lam-Hai ban tay-0-100.mp4
OpenCV: FFMPEG: tag 0x5634504d/'MP4V' is not supported with codec id 12 and format 'mp4 / MP4 (MPEG-4 Part 14)'
OpenCV: FFMPEG: fallback to use tag 0x7634706d/'mp4v'

This happen when run enhencer. Does anyone help me to fix it?

[tnfsmith]

Does image dimension affect the enhancer?