Using ffmpeg as built in lib

[Alir3z4]

Hi.
For example in console(temrinal) we can do amazing stuff with ffmpeg commands, but i couldn't found a way to doing that stuff in source code.
Of course i can work with QProccess, but it's not my point.
There is a some way to do that, like include ffmpeg library in source code and send argument & parameters like in Console?
If not, i think i have to wrestling with libavcode
tnx

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Alos i asked this question here, but seems qtcenter hottest than qtforum!