How to edit or add video metadata of “rotation” in mp4?

Question

I want put rotation information into my mp4 video file but I have no idea about this.

Is there any program that I can add \"rotation\" metadata? It would be OK if there\

Answer 1

+1 for FFMpeg. More specifically, I had good results correcting orientation metadata with

ffmpeg -i input.mp4 -metadata:s:v rotate=90 -vcodec copy -acodec copy output.mp4