This is the disadvantage of free applications, all have a limited number of formats for conversion. If you want more, buy paid software and use all its features to the fullest.
Paid programs have much more functionality. But that's why they are paid, you pay for the quality and for additional features. During this time, I found several paid programs Xilisoft, Wise, Movavi, Wondershare. I myself have not encountered these applications, and so far I have not decided which is the best .