Hi Codrut,
Did you ever found out the answer to your question?
I'm wondering the same. Looking for an answer I stumbled upon your question. Got some footage recorded in 1080i that needs to be deinterlaced. Tried the different software deinterlacing options in VLC-player but the results are inferior compared to Media
Player or 'Movies & TV' app (W10). I suspect Media Player is using the hardware decoding (and deinterlacing) of my NVidia GPU. Any suggestion to get goods results converting to 1080 progressive?