This is a known issue for VEAI for a long time.
https://community.topazlabs.com/search?q=metadata%20rotate
VEAI ignore the “rotation” flag in metadata and cause vertical video become horizontal after processing.
It seem that developer is writing a new video IO for VEAI, and the problem should be fixed in future release. But ETA is unknown.
At the meantime, you may use ffmpeg, exiftool, etc. to add back “rotation” flag to the processed video.
ffmpeg -i input.mp4 -c copy -metadata:s:v:0 rotate=90 output_r90.mp4
ffmpeg -i input.mp4 -c copy -metadata:s:v:0 rotate=270 output_r270.mp4
