Since the file has an .mp4 extension, it uses the container format. This means:
: It almost certainly contains AAC (Advanced Audio Coding) audio.
: For technical details (like the software used to create it), you can use MediaInfo or ExifTool to read the embedded metadata.
If you have the file and are unsure what is in it, you can safely inspect it using these methods:
: It should be playable on most modern devices, including smartphones, PCs, and web browsers. How to Identify the Content
