How do I specify an aspect ratio when running smplayer from the command line?

[supplementfacts2]

I know an mplayer command that specifies an aspect ratio looks like this:

mplayer -aspect 4:3 "c:\folder\file.mp4"

But, despite a lot of googling, I can't find any way to make the smplayer command specify an aspect ratio. Here are the ones I've tried:

smplayer -aspect 4:3 "c:\folder\file.mp4"
smplayer -aspect 4/3 "c:\folder\file.mp4"
smplayer -aspect=4:3 "c:\folder\file.mp4"
smplayer -aspect=4/3 "c:\folder\file.mp4"
smplayer -aspect:4:3 "c:\folder\file.mp4"
smplayer -aspect:4/3 "c:\folder\file.mp4"
smplayer --aspect 4:3 "c:\folder\file.mp4"
smplayer --aspect 4/3 "c:\folder\file.mp4"
smplayer --aspect=4:3 "c:\folder\file.mp4"
smplayer --aspect=4/3 "c:\folder\file.mp4"
smplayer --aspect:4:3 "c:\folder\file.mp4"
smplayer --aspect:4/3 "c:\folder\file.mp4"
smplayer aspect 4:3 "c:\folder\file.mp4"
smplayer aspect 4/3 "c:\folder\file.mp4"
smplayer aspect=4:3 "c:\folder\file.mp4"
smplayer aspect=4/3 "c:\folder\file.mp4"
smplayer aspect:4:3 "c:\folder\file.mp4"
smplayer aspect:4/3 "c:\folder\file.mp4"
smplayer "c:\folder\file.mp4" -aspect 4:3
smplayer "c:\folder\file.mp4" -aspect 4/3
smplayer "c:\folder\file.mp4" -aspect=4:3
smplayer "c:\folder\file.mp4" -aspect=4/3
smplayer "c:\folder\file.mp4" -aspect:4:3
smplayer "c:\folder\file.mp4" -aspect:4/3
smplayer "c:\folder\file.mp4" --aspect 4:3
smplayer "c:\folder\file.mp4" --aspect 4/3
smplayer "c:\folder\file.mp4" --aspect=4:3
smplayer "c:\folder\file.mp4" --aspect=4/3
smplayer "c:\folder\file.mp4" --aspect:4:3
smplayer "c:\folder\file.mp4" --aspect:4/3
smplayer "c:\folder\file.mp4" aspect 4:3
smplayer "c:\folder\file.mp4" aspect 4/3
smplayer "c:\folder\file.mp4" aspect=4:3
smplayer "c:\folder\file.mp4" aspect=4/3
smplayer "c:\folder\file.mp4" aspect:4:3
smplayer "c:\folder\file.mp4" aspect:4/3

None of them play the video in the specified aspect ratio, although some of them do at least play the video. Does anyone know how to do it? Thanks!

[smplayer-dev]

smplayer -actions aspect_4:3 video.mp4

[supplementfacts2]

Thank you, but there is still a problem. I used 4:3 as an example, but the command doesn't seem to work for other aspect ratios: e.g., 2:1 or (just to choose a strange one) 7:2. Is there a way to open a file with 2:1? Thanks again!

[smplayer-dev]

I'm afraid only the aspect ratios listed in the menu Video -> Aspect ratio can be used this way.