nashit19 , via OnePlus Nord Blue Marble , Jan 17, 2021 : Hello, It's normal with OnePlus Nord that sometimes front camera doesn't record video but recently I encountered another problem which is not opening the camera app at all. Is somebody experiencing the dame problem? I have screen recorded it but I guess a video can't be uploaded here.
drl431 , Jan 17, 2021 : Hi, try clearing the cache and storage for the camera app, then restart the phone (in that order).
tilak_gr.stark , Jan 18, 2021 : If the issue is with 4k 60fps format, try these steps suggested by @ShreyasPatil_ and @Shailender Sharma