At the moment, while an encoding is in progress, the encoding settings can be changed. Although I assume changing these will have no effect in the encoding in progress, it is rather odd and distracting that you can change them.
I suggest to grey these out while an encoding is in progress so they cannot be changed. I think greying is better than hiding, so you can see what settings were picked even if you cannot change them.
At the moment, while an encoding is in progress, the encoding settings can be changed. Although I assume changing these will have no effect in the encoding in progress, it is rather odd and distracting that you can change them.
I suggest to grey these out while an encoding is in progress so they cannot be changed. I think greying is better than hiding, so you can see what settings were picked even if you cannot change them.