Editor

Control	Action
Exit
[ESC] ape	exit dialog or MMP
Ctrl-[0] (zero)	close all running instances of MMP
Ctrl-[E]	show/hide the audio/video Timeline [E]diting tools for lossless editing
Shift-[E]	play the [E]xported, [E]dited file in a new MMP window
[X]	see below
Segment under the vertical cursor
[I]	[I]n point: split the egment under the cursor and mark the left-hand segment as e[X]cluded, i.e. deleted
[O]	[O]ut point: split the segment under the cursor and mark the right-hand segment as e[X]cluded, i.e. deleted
[C]	[C]ut: split the segment under the cursor into two segments
select a Segment, then...
[L]	[L]engthen the selected segment by one second - can be held down for rapid repeat
[S]	[S]horten the selected segment by one second - can be held down for rapid repeat
[M]	[M]erge the selected segment with the segment to its right
[N]	[N]erge the selected segment with the segment to its left
[X]	e[X]clude the selected segment from the final edit
[R]	[R]estore the selected e[X]cluded segment
Additional
right-click a segment	toggle include/exclude/restore for that segment same as [X] and [R] but the segment doesn't need to be selected first
[F]	toggle key[F]rames on and off
` (back tick)	restart/startover from beginning of media file
Ctrl-[R]	[R]ename file
Ctrl-[S]	toggle [S]kip excluded segments during playback
Shift-[S]	[S]kip to the next [S]egment
Ctrl-Shift-[S]	[S]kip to the previous [S]egment
Export Button Operation
Ctrl	change the Export button to Join after a manual adjustment to the .seg file and/or the .segnn exported segment files, to bypass the Export stage
Ctrl-Shift	change the Export button to Copy after export errors, to work on an FFmpeg-copied duplicate of the original file