You first need to convert to equirectangular. This filter might work if it cannot get it out of Insta360 software as equirectangular
Converts a video frame with two hemispherical images to a single equirectangular frame. The plugin assumes that both hemispheres are in the frame. If you have a camera like the Garmin Virb360 that produces two videos, one from each camera, you should start by converting them to a single movie by placing them side by side using, for example, ffmpeg (you can also add parameters to produce lossless, intra-only output here for easier editing):
ffmpeg \
-i left.mp4 \
-i right.mp4 \
-filt…
Then there is a filter to convert equirectangular to rectilinear which is the reframing part. You can drag on the video preview to look around and use Keyframes to move the perspective
Converts an equirectangular frame (panoramic) to a rectilinear frame (what you’re used to seeing). Can be used to preview what will be shown in a 360 video viewer.
Parameters
Interpolation: Nearest-neighbor or bilinear. Determines the sampling method. See also “Interpolation” in the Glossary / Terminology
Yaw, Pitch and Roll: The direction of the image center in the panorama.
FOV: Tthe horizontal field of view, in degrees, of the resulting frame. Any value over 179 results in a fisheye pro…
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