HELP!!!!!! How to launch vr game without black side? look image

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like this image ,How to launch vr game without black side
I just want record screen , but this black sides looked so ugly

I would say try these console commands but that rendering doesn’t look right at all:

HMD mirror mode 0': default

HMD mirror mode 1': Undistorted stereo

HMD mirror mode 2' : Undistorted single eye

'HMD mirror 960x1080' : sets mirror window to desired dimensions

楼主后来解决了吗?