Add support for insta360 data (#781)

* Add support for insta360 data

* Update docs

* Revert unrelated changes

* remove cropping on normal videos

* Address comments

docs/quickstart/custom_dataset.md

@@ -9,7 +9,7 @@ To assist running on custom data we have a script that will process a video or f
 To process your data run:
 
 ```bash
-ns-process-data --data {FOLDER_OR_VIDEO} --output-dir {PROCESSED_DATA_DIR}
+ns-process-data {video,images,insta360} --data {DATA_PATH} --output-dir {PROCESSED_DATA_DIR}
 ```
 
 A full set of arguments can be found {doc}`here</reference/cli/ns_process_data>`.
@@ -114,8 +114,7 @@ Nerfstudio can also be trained directly from >=iPhone 12 Pro captures from the [
 
 Click on the image down below 👇 for a 1-minute tutorial on how to run nerfstudio with Record3D from start to finish.
 
-
-[![How to easily use nerfstudio with Record3D](imgs/record3d_promo.png)](https://youtu.be/XwKq7qDQCQk "How to easily use nerfstudio with Record3D")
+[![How to easily use nerfstudio with Record3D](imgs/record3d_promo.png)](https://youtu.be/XwKq7qDQCQk 'How to easily use nerfstudio with Record3D')
 
 At a high level, you can follow these 3 steps:
 
@@ -128,9 +127,9 @@ At a high level, you can follow these 3 steps:
 
 3. Train with nerfstudio!
 
-  ```
-  ns-train nerfacto --data {RECORD3D_CAPTURE_DIR/EXR_RGBD} record3d-data
-  ```
+```
+ns-train nerfacto --data {RECORD3D_CAPTURE_DIR/EXR_RGBD} record3d-data
+```
 
 We provide some example recordings for you to try out and to see the correct formatting.