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Does Windows- 7 already have something that would convert .m4v to .mp4?

If not, how would I do that?

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2 Answers 2

Just rename your file from .m4v to .mp4. There is no conversion needed.

Both .m4v and .mp4 are extensions for the MPEG-4 Part 14 container format. They are the exact same thing. The different extensions were chosen to make them easier to categorize. While .m4v isn't used that often, .m4a is common for audio-only files.

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Indeed. The “v” is for video. It’s basically information just for humans. There’s also m4a for audio. –  Daniel B Jul 5 at 14:16
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Yeah, typically you would name audio-only files .m4a. The iPhone uses .m4r for ringtones, for example. –  slhck Jul 5 at 14:17
    
I would add that extensions don't change the file, just how the computer decides to use it. –  fredsbend Jul 5 at 17:26
    
Mostly not even that. Because the file name is not truly metadata, it cannot be relied on. Instead, the presence of well-known/well-formed data is tested. –  Daniel B Jul 5 at 18:29

Leawo total media converter, or maybe AVS Video converter
They are both paid, but have free versions

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I downvoted because there is no need to convert anything in the file. In fact, using such a conversion tool you mention would only deteriorate the quality of the contained audio/video by re-encoding it. (Good example of generation loss) –  slhck Jul 5 at 14:18
    
Very true, free trials usually have their limitations. But I do not appear to have a downvote.. ? –  Micheal K Jul 5 at 14:21
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That's not a matter of free trial vs. totally free or super expensive. You do not need a conversion program. Quite the contrary: you should avoid it, because they unnecessarily re-encode the audio and video parts (unless you know and find the option that does a stream copy, but not every tool has this). You received one upvoted, hence the 0 score. –  slhck Jul 5 at 14:22
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Ah, Thank-you sir. I have become so used to converting all my videos that I kind of jumped the gun. Learn something new everyday, I guess. –  Micheal K Jul 5 at 14:35
    
Downvoted because this doesn't actually explain why...with an explanation the OP would realise there is no need for an external program. –  JB_STWUK Jul 5 at 21:13

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