Issue after camera section of outputting to transforms.json

[EZG1]

Hi!
Firstly forgive me if this is an easy solution I'm still very new to all this.
A few days ago I managed to successfully get everything to work correctly using images as the source.
I recently tried to use a video as a source but found myself running into issues, I then decided to just take the frames out of the video and use them as input images instead as I knew that I had succeeded at that before.
I'm not sure if at some point trying to use video I've screwed things up or if I just need to clean install things or what but I keep running into this issue now when I try to create transform.json.

Any help is extremely appreciated and my apologies if I didn't provide enough info.

---

---

---

Elapsed time: 0.291 [minutes]
==== running: mkdir colmap_text
==== running: colmap model_converter --input_path colmap_sparse/0 --output_path colmap_text --output_type TXT
outputting to transforms.json...
camera:
res=(1080.0, 1920.0)
center=(540.9972322983291, 956.4544408884366)
focal=(1660.3907635816822, 1668.278938684909)
fov=(36.031605022575675, 59.83597594816116)
k=(0.07043484873857946, -0.06639979142049124) p=(-5.218946270222431e-05, -0.0009328711758077937)
[ WARN:[email protected]] global D:\a\opencv-python\opencv-python\opencv\modules\imgcodecs\src\loadsave.cpp (239) cv::findDecoder imread_('./data\ExportPNGTest/Sequence_01052.jpg'): can't open/read file: check file path/integrity
Traceback (most recent call last):
File "C:\ngp\instant-ngp\scripts\colmap2nerf.py", line 257, in
b=sharpness(name)
File "C:\ngp\instant-ngp\scripts\colmap2nerf.py", line 112, in sharpness
gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
cv2.error: OpenCV(4.5.5) D:\a\opencv-python\opencv-python\opencv\modules\imgproc\src\color.cpp:182: error: (-215:Assertion failed) !_src.empty() in function 'cv::cvtColor'