# Modifying "Media created" date mp4 **URL:** \ **Category:** Support\ **Created:** [November 28, 2016, 3:07pm UTC](https://community.mp3tag.de/t/modifying-media-created-date-mp4/18466 "2016-11-28T15:07:40Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![wildcowboy](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/w/ecb155/32.png) [@wildcowboy](https://community.mp3tag.de/u/wildcowboy)\ **Post date:** [November 28, 2016, 3:07pm UTC](https://community.mp3tag.de/t/modifying-media-created-date-mp4/18466/1 "2016-11-28T15:07:40Z")
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. Any ideas on how it could be done in mp3tag? ExifTool shows the tag as "EncodingTime". ---
**Author:** ![poster](https://community.mp3tag.de/user_avatar/community.mp3tag.de/poster/32/4881_2.png) [@poster](https://community.mp3tag.de/u/poster)\ **Post date:** [November 28, 2016, 3:41pm UTC](https://community.mp3tag.de/t/modifying-media-created-date-mp4/18466/2 "2016-11-28T15:41:41Z")
MP3Tag is obviously not able to handle this "tag", as it does not show it in its extended tag-menue, even if it exists or was created in Windows-Explorer. ---
**Author:** ![ohrenkino](https://community.mp3tag.de/user_avatar/community.mp3tag.de/ohrenkino/32/4843_2.png) [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)\ **Post date:** [November 28, 2016, 6:01pm UTC](https://community.mp3tag.de/t/modifying-media-created-date-mp4/18466/3 "2016-11-28T18:01:50Z")
> [@Wild Cowboy](#): > > 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. > > Any ideas on how it could be done in mp3tag? > > ExifTool shows the tag as "EncodingTime". What about %encodingtime%? I see that field in the extended fields list of the filter and also in the list of supported tag fields as TDEN: [https://docs.mp3tag.de/mapping](https://docs.mp3tag.de/mapping) ---
**Author:** ![wildcowboy](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/w/ecb155/32.png) [@wildcowboy](https://community.mp3tag.de/u/wildcowboy)\ **Post date:** [November 28, 2016, 6:13pm UTC](https://community.mp3tag.de/t/modifying-media-created-date-mp4/18466/4 "2016-11-28T18:13:43Z")
> [@ohrenkino](#): > > What about %encodingtime%? > I see that field in the extended fields list of the filter and also in the list of supported tag fields as TDEN: [https://docs.mp3tag.de/mapping](https://docs.mp3tag.de/mapping) 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". ---
**Author:** ![ohrenkino](https://community.mp3tag.de/user_avatar/community.mp3tag.de/ohrenkino/32/4843_2.png) [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)\ **Post date:** [November 28, 2016, 6:22pm UTC](https://community.mp3tag.de/t/modifying-media-created-date-mp4/18466/5 "2016-11-28T18:22:31Z")
> [@Wild Cowboy](#): > > 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". Well, the field TDEN is a V2.4 tag - and Windows does not read V2.4 tags ... The proper name for a MP4 tag ist WM/EncodingTime. But this should be mapped by MP3tag to %encodingtime%. So right now I would check if the various experiments with the tags (like creating a V2.4 tag TDEN for an MP4 file) have messed up the tags somehow... ---
**Author:** ![system](https://community.mp3tag.de/uploads/default/original/2X/c/ce7035d426cb755a7916793326d23b465222a407.png) [@system](https://community.mp3tag.de/u/system)\ **Post date:** [February 9, 2026, 12:26pm UTC](https://community.mp3tag.de/t/modifying-media-created-date-mp4/18466/6 "2026-02-09T12:26:32Z")