Opening an EXO File

The EXO file type is primarily associated with Youtube.

EXO	File extension: EXO
	File type:	encrypted video chunk

What is an EXO file?

EXO files mostly belong to Youtube by Google. EXO files are chunks or segments of encrypted video content saved as part of a video downloaded for offline playback from YouTube Android app. An EXO file contains part of a larger video file which YouTube stores on an Android device. The larger video file is split and encrypted as EXO files to prevent illegal download or playback of YouTube videos. For this reason, EXO files cannot be converted to MP4 or any other video format because the files are encrypted and relevant only within the context of the YouTube app. When an offline video is played on YouTube, the program assembles and decrypts EXO video chunks to allow playback. EXORmacs, a software development kit used to create VersaDOS programs based on the Motorola 68000 platform also saves data in EXO files.

How to open an EXO file

You need a suitable software like Youtube from Google to open an EXO file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your EXO file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a EXO file directly in the browser:. Just drag the file onto this browser window and drop it.

Online EXO Text Viewer

Choose your .exo file to analyze

or drag and drop it here

Online File Viewer

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EXO file format:

Every file has a defined file format, i.e. how the data is arranged in the file. The initial characters of a file are called signature, sometimes also referred to as "magic bytes". The signature can be used to infer the file format. However, different programs can use the same file extension, and file extensions can be assigned incorrectly. If there are problems opening a file, you must first determine the file format used. Below is our analysis of the EXO files:

EXO is a very common file type and is used by many programs, each with its own file format. However, the following two file formats are common:

• 10% of all EXO files are based on the popular MP4 file format. MP4 is a multimedia container format used to store video and audio and allows streaming over the Internet. They consist of illegible, cryptic characters. The files are 850 bytes to 3 MB in size, with a median of 120 KB. The file type was developed only in the last few years. The following keywords are characteristic: lmvhd, \tkhd, moov, ftypisom, trak and isomiso2avc1mp41. Files like these are sometimes connected to null, attachment, messaging and redirect.
• 10% of all EXO files use the same file format, which can be identified by the letters "00 00" at the beginning. These files contain neither text nor words, but only data. The files are 32 KB to 7 MB in size, with a median of 540 KB. Several words can almost always be found in the files, e.g. mfhd, tfhd, tfdt, trun, moof and traf.

All other EXO files (80%) have different formats, often, for example, XML, MKV, MP3, styp, EXTM, exedit, BIF, WEBVTT and CDF. Files like these are sometimes linked to aviutl, android, lcied, goss, video or data. Just click the "Choose your .exo file to analyze" button on this page to find out what your EXO file is.