Batch video compression software don't crop the filenames of the 100 files I've asked you to compress and append them with your own naming scheme without giving me the option to override it.
I hate software which tries to be clever for stupid people, but can't be stupid for clever people. I know they are different files, just change the file extension. That's all I want. Hell, it's all I need.
Now I have to rename 100 files which have had the major identifying part of the filename over written, and that I can't identify the contents of because they are compressed in a video codec that doesn't have a native player.