video captured from iphone gets rotated when converted to .mp4 using ffmpeg

Question

When I try to upload videos captured from my iPhone in my app, the server performs a conversion from .mov to .mp4 so that it can be played in other platforms. However the pr

Answer 1

Or... to simply change the tag in an existing file:

Read the current rotation

exiftool -Rotation 

then, for example:

exiftool -Rotation=180 

to set it to 180