Failed to load model because protobuf parsing failed.

[eexposito]

Hi there, just downloaded v1.4.0 of Yolov8 and getting the exception "[ErrorCode:InvalidProtobuf] Failed to load model because protobuf parsing failed." when trying to do classification. Using yolov8x-cls.pt model for .Net6 project. Any help is greatly appreciated.

public IClassificationResult ClassifyObjects(string filePath) { try { using var predictor = new YoloV8(_modelPath); return predictor.Classify(filePath); } catch (Exception ex) { return null; } }

[dme-compunet]

This happens because you are trying to load a model in PyTorch format (.pt extension), you must first export it to ONNX format, then load it.

Run the following python code to export the model to ONNX format:

from ultralytics import YOLO

model = YOLO("yolov8x-cls.pt")

model.export(format="onnx")

[eexposito]

Gotcha! Thanks for pointing me in the right direction.