Filter by file extension

Can you add a feature to filter by file extension. I have movies in .avi and .mkv that I’d like to use the Plex Media Optimizer to convert to .mp4 format. Your optimizer is quick and easy to use and I’d like to add movies to the optimizer this way. Can you also include the drop down bullet menu for the file so we can select it to go to optimization without opening to optimization window? In other words I’d like a check mark multi select option for the files I’d like to convert and then be able to go to the optimization screen and configure per movie there. Thank you for your consideration.
Respectfully,
Deaths Asylum