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Today I found myself in a somewhat annoying situation. After obtaining in a totally legal and lawful way a large collection of mp4 videos, I loaded them on my external hard drive, plugged the hard drive into my TV, hit play on the first video… and the audio was not recognized. Drama and despair, there is no possibility of finding these videos in another format, they only exist in this one, so I got down to work.

What is audio encoding?

If you, like me, are somewhat ignorant in these aspects of multimedia, I will briefly explain why my TV could not play the audio of these mp4 files.

An mp4 file can be explained as a package that compresses audio and video separately. Both video and audio have their own encoding, which in short is the way their data is stored and transmitted.
Therefore, if the player (my TV) does

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