# Modification of tags for mp4 and case conversion

**URL:** https://community.mp3tag.de/t/modification-of-tags-for-mp4-and-case-conversion/57644
**Category:** Support
**Created:** [June 15, 2022, 2:28pm UTC](https://community.mp3tag.de/t/modification-of-tags-for-mp4-and-case-conversion/57644 "2022-06-15T14:28:01Z")
**Posts on this page:** 1
**Showing post:** 4

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### 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: [June 15, 2022, 2:37pm UTC](https://community.mp3tag.de/t/modification-of-tags-for-mp4-and-case-conversion/57644/4 "2022-06-15T14:37:43Z")

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Here are the FAQS about how to create a new action - and the first example is about case conversion:

> [@Actions and batch-operations](https://community.mp3tag.de/t/actions-and-batch-operations/967):
>
> Mp3tag provides a variety of actions, which can be applied to filenames and tags. The actions are grouped together into named sets (action groups), which can be applied independently via Alt + 6. If you do not want to create a reusable action group for applying one single action, the Actions (Quick) toolbar button or keyboard shortcut Shift + Alt + 6 can be used. How to [create a new action](https://community.mp3tag.de/t/actions/967/2)? How to ... [change upper/lower case of tag fields or filenames](https://community.mp3tag.de/t/actions/967/3)? [replace the string “xyz” in tag-fields …](https://community.mp3tag.de/t/actions/967/4)

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_[View the full topic](https://community.mp3tag.de/t/modification-of-tags-for-mp4-and-case-conversion/57644)._