Hello, if you open an mp4 file properties in windows file explorer there is "Origin" section with the following fields: Directors, Producers, Writers, Publishers, Content provider, Media created, Encoded by, Author URL, Promotion URL, Copyright.
I am trying to write the "Media created" field and have tried: TDEN, TDOR, TORY, TDRL, TYER, TDRC so far witn no luck.
I have tried it but what it does it actually creates an additional field "ENCODINGTIME" which is different from "EncodingTime" and no software incl. windows file property system recognizes it.
I also noticed that if I write to "YEAR" using mp3tag it actually writes to "ContentCreateDate" not "Year".