I have been trying to understand how to add some additional metadata to a MP4 file. I understand how to add metadata, like this:
ffmpeg -i bb.mp4 -metadata title="my title" bb2.mp4
But what I am looking for is how to add some new tags something like this:
ffmpeg -i bb.mp4 -metadata newTag="newTag" bb2.mp4
newTag might be something like author's birthday, anything new not already existing!
Is this even possible?