MP4XtraAtomRemover

If you have recently transferred or converted videos from your mobile device to your computer and noticed that they stopped playing, although they were fine previously, then it is very likely that the files have been corrupted during the process.
MP4XtraAtomRemover is a light application that enables you to remove the Xtra field present in the header and that can be the primary cause of the problem.

Minimalist GUI and straightforward functionality

Even though the program comes with a rugged and unpolished interface, it is intuitive and it is unlikely that it can pose any problem even for first-time users. The UI consists of the main window that displays the role of the app, a status bar indicating the progress as well as the source and destination file location.
As far as the functionality is concerned, the utility is as simple as it looks. To be more precise, you can select the video that is corrupted and then hit the Clean File button. It is worth mentioning that the repaired file is going to be stored in the same folder, but with a _clean suffix in the file name, so that you can identify it easier.

It could support more file formats and include a batch repair function

Unfortunately, the application is designed to address files that have been corrupted due to the presence of a field dubbed Xtra: WM/MediaClassPrimaryID in MP4 files. It would have been useful if the tool worked with other types of file formats as well, especially since they can get corrupted so easily during transfers, conversions or due to various recording errors.
In addition, it would be great if the program came with a batch repair function, more so since you are more likely to transfer dozens of videos from one device to another. Then again, you should keep in mind that the original file is not modified, but rather you are provided with a copy of it.

A tool that helps you repair and access corrupted videos

In case you cannot access a clip that was working fine before and you notice an extra field in the metadata, then MP4XtraAtomRemover could lend you a hand with recovering the MP4 file and allow you to access your videos in no time.