How to see on screen during playback if it's transcoding or direct play

Vaguely remember there was a key combination that showed this (and other tech data) on screen during playback. Any advise please ?

@Pil71 said:
Vaguely remember there was a key combination that showed this (and other tech data) on screen during playback. Any advise please ?

Use ‘i’, this will bring up the info you want.

Regards