Wed Mar 21, 2018 2:15 am
On Windows, the Adobe suite (including Premiere and After Effects) support ProRes decoding but not ProRes encoding, in part due to licensing reasons.
There are only a few programs that are officially licensed by Apple for ProRes encoding on Windows. These include Assimilate Scratch, The Foundry Nuke, and Blackmagic Fusion Studio (starting with version 9). Of these, Fusion Studio is probably the least expensive option.
There are also some unlicensed ProRes encoders that run on Windows, including ffmpeg, but since these are not officially licensed implementations of the codec, it's possible that there could be some compatibility issues with playing back the ProRes files they generate.