Option for auto check media and add a filetype to the output filename

[Makular]

I sometimes have files from unknown source with incorrect filetype. Some mediaplayer have problems if the filetype is incorrect.

I would request an option to extract all content from an unknown source file, check/repair them and merge them together to a File. With this option I wish to have the option to auto add a filetype to the output name.

In the best case. ffmpeg only add the filetype.
In the worsest case ffmpeg repair several things and show a result of this repairs (container, audio, video, subtitle, timing, etc.)