My fault, I am not used to doing this, had to make all files sharable.
The first file is quite a bit bigger than the second, but will be easier to see the distortion. In the second sample the distortion will be evident if looking at the black lighting assembly in the video. Both have Letter boxes top and bottom (not wanted) and were burned at 9000 bit rate for video and 320 for audio.
1st link - Video recorded on Canon professional camcorder MPEG-4
https://drive.google.com/drive/folders/1hYKDgkyLQQJtFXqO9xpFHrMy0nrJAw9l?usp=sharing
2nd link - iPhone video converted to MP4
https://drive.google.com/drive/folders/11xLx8wPCHp0YSlqyspNAXQRto7F8StZ9?usp=sharing