One of my first not-too-bad result for such a large scale and limited images. 5 foot perch.
Colmap for tracking and gsplat for training, 50k steps. It gave me 1.2M splats, cleaned to about 500k.
I find the video to be too blocky to be of use, even in lower resolution and higher bitrate. and the photos are OK but the interval is 3 seconds which is way too long between shots to be of use (a 1-second option would have been great). The stitching part is also useless because the software "makes" it pretty to the eyes.
So far my best results is by exporting "photos" from my 360 images but the undistorting tool interprets and it's unusable so maybe a mask that would prevent it from using the stitch.
I'm using colmap and gpslat on windows
It looks faceted, found close to a river with lots of loose stones (river pebbles). Can I put this in a rock tumbler or will it disintegrate.
About 3 times around the tree, pointing down, straight and up. Extract i-frames with ffmpeg, use colmap to make the sparse model, then gsplat for training. The result was 2.8M splats, I cut a bit out around the tree, removed some transparent splats and got about 1.8M in my final output you see here.