How to edit "Cast" field in MP4?

[d728kK]

Hello,

I have an MP4 video that has a value defined for "Cast"...in this video it was used to put an actors name.  Exiftool cannot write it and I can't seem to find a program to delete or change it.  Can anybody point me to at least what program/protocol/application might have been used to put something in this field originally?  It does not show up in a standard Windows properties box, VLC, Kid3, or Mp3Tag.  I tried to take a stab at a few categories in the master list (https://exiftool.org/TagNames/index.html), but without a searchable index of tags (a VERY much desired enhancement), it would take hours to go through each category to search.

Thanks in advance.

[StarGeek]

Add -g1 to see the tag group it belongs to.

You can search the tag pages specifically by using Google and adding  site:exiftool.org/TagNames to the search.

Cast appears to be a PLIST tag https://www.exiftool.org/TagNames/PLIST.html
First I've heard of them so I can't help with what will write  the tag.

You can probably remove it (and other metadata ) with Ffmpeg.
https://superuser.com/questions/441361/strip-metadata-from-all-formats-with-ffmpeg

[d728kK]

Thanks.