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Because they can't be played on the devices iTunes syncs with or server content to. Even QuickTime, the video playback handler of iTunes, cannot playback those formats without an additional plugin.
 
Because wasting your time to do it manually and annoying you is the price you pay for downloading illegal content.

Even piracy has a price you must pay.
 
Because Apple wants u you to buy EVERYTHING from iTunes, plus avi being a Microsoft (the devil) creation.
 
I'm just inquiring as to the reasons why a global master-program like iTunes can't do basic things that a third party indie dev can do. It sure is time consuming and annoying to do it manually...

Thanks for the input.

get a program that allows you to put a bunch in que and convert them while your sleeping

i use smart converter pro, it was a few bucks im sure there are even free programs that do the same thing
 
Because wasting your time to do it manually and annoying you is the price you pay for downloading illegal content.

Even piracy has a price you must pay.

Come on - most of us video geeks purchase our BR discs and not bother with Apple's substandard video quality and almost complete lack of subtitles (closed captions). And we DO suffer from not being able to play back the native output of MakeMKV, the best BR ripper tool, without additional conversion.

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Because Apple wants u you to buy EVERYTHING from iTunes, plus avi being a Microsoft (the devil) creation.

Yup, this (to force people to purchase flicks from the iTunes Store instead of ripping their own BR or DVD discs) is one of the main reasons. The other is their not wanting to support other codecs because of the hurdles and incompatibility issues involved. The latter can, to some degree, understood.
 
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