Apologies, sir, for the late response. Nevertheless, your VBS Script, for FFmpeg, worked, in which, once again, I am very grateful. As for using your name as a format string, %ryerman_mte%, it's more to establish the VBS Script author. I believe this is the 3rd VBS Script that you wrote for me, and, in the 3rd one, it provided a more detailed message box regarding total number of files and commands processed, which I incorporated into your second VBS Script, my favorite one: mkvpropedit (%mp3propedit% as the format string). Believe it or not, your second VBS script has done more wonders than you could have imagined because I created .MTEs' of the script for Exiftool, WinTestGear's FileTouch v126.96.36.199, and NirSofer's Property System View. The only issue that I have with NirSofer's Property System View is that if an Mp3Tag FIELD contains double quotations, NirSofer's Property System View will only write into the Mp4 properties up to the first double quote, deleting everything else. I searched online on how to escape it as you would do for regex, but no luck.
As for your question regarding the multiple file extensions, which correlates with all the file extensions MP3Tag can read (excluding .mks), it was for WinTestGear's FileTouch v188.8.131.52 .MTE file to change the dates for various media types, and since ffmpeg can read practically almost every media, I thought it would be appropriate to use it as well. Nonetheless, thank you, once again, because you solved my MP4 problem regarding Windows Explorer File Properties, in which I used your 2nd VBS Script Template responding to someone else's post: RESPONSE to incorporate NirSofer's Property System View with Mp3Tag's .MTE file
Moreover, there is no way I could have figured it out for ffmpeg in LINE 30 of the VBS Script. Therefore, I was wondering if you could direct me to what guides (i.e. books, forums, et cetera) you used to learn how to write VBS Scripts because you are correct about the command arguments in LINE 30 being tricky, especially when to use single/double quotations as the last argument before the next
& chr(34). For example,
"'%ryerman_mte%'", in which the first %ryerman_mte% is ended by a SINGLE quote, and the second %ryerman_mte% is ended by a DOUBLE quotation, as well as every line must end with an even-number of SINGLE quotes.
Lastly, thanks because, though I am not an expert like you nor DetlevD, whom, apparently, has been dubbed the father of .MTE files, I can comfortably write my own regex, given the .MTA file you wrote for me to convert format of date and time from, for example, 6/25/2022 11:25:33 PM to 2022-06-25 23:25:33. Thank you, again, sir, for your help and patience. I really appreciate it.