Free mp4s software for windows

Mp3tag is a powerful and yet easy-to-use tool to edit metadata (ID3, Vorbis Comments and APE) of common audio formats.
Mp3tag is a software that allows you to rename files based on the tag information and replace characters.
Mp3tag can rename files based on the tag information, replace characters or words from tags and filenames, import/export tag information, create playlists and more.
The program supports online freedb database lookups for selected files, allowing you to automatically gather proper tag information for select files or CDs.
Mp3tag supports the following audio formats:
- Advanced Audio Coding (aac)
- Free Lossless Audio Codec (flac)
- Monkeys Audio (ape)
- Mpeg Layer 3 (mp3)
- MPEG-4 (mp4 / m4a)
- Musepack (mpc)
- Ogg Vorbis (ogg)
- OptimFROG (ofr)
- OptimFROG DualStream (ofs)
- Speex (spx)
- True Audio (tta)
- Windows Media Audio (wma)
- WavPack (wv)
Main features:
- Write ID3v1.1-, ID3v2-, APEv2-Tags and Vorbis Comments to multiple files at once
- Automatically create playlists
- Recursive subfolders support
- Remove parts or the entire tag of multiple files
- Rename files based on the tag information
- Import tags from filenames
- Format tags and filenames
- Replace characters or words from tags and filenames
- Regular Expressions
- Export tag information to user-defined formats (like html, rtf, csv, xml)
- Import tag information from an online database (also by text-search)
- Import tag information from a local database

Enhancements:
- NEW: support for dragndrop of cover art from Mp3tag.
- NEW: action type Split fields by separator
- NEW: MP4 fields ITUNESMEDIATYPE, TVEPISODEID, TVNETWORK, TVSEASON and TVEPISODE.
- NEW: tag sources dialogs now with Back buttons.
- CHG: memory consumption improvements for large music libraries with cover art.
- CHG: SHOW and SHOWSORTORDER MP4 tags renamed to TVSHOW and TVSHOWSORTORDER.
- FIX: binary ID3v2 UFID frames were not read and preserved correctly.
- FIX: changing cover to Back cover was ignored at MP4s with Nero Digital tags.
- FIX: fixed wrong button state at column configuration dialogue.
- FIX: runtime error when undoing operations for files where file name contained percent character.
- FIX: undo rename overwrote tag of current visible files in some rare error cases.