SceneLoader file type autodetect and What is unexpected magic

Questions
1

I try to append some scenes with SceneLoader.Append but I get this error. File types are glb and gltf. I try them not simulatenously, but at different times.

BJS - [18:19:30]: Unable to load from http://localhost:3001/mavi-kutu.glb/mavi-kutu.glb: Unexpected magic: 1784835931

What does this error mean? What do I do wrong?

Is it related to the wrong file type I try to append?

How can I use SceneLoader.Append to automatically know what to do regardless of file format I try to load, whether glb, gltf, obj, or babylon

2

The magic number is part of the header of a GLB file. See glTF/specification/2.0 at master · KhronosGroup/glTF · GitHub

For a GLB, this number is expected to be HEX 0x46546C67 (1179937895). The error you are seeing just means the loader parsed out a different number than expected for a GLB file. Are you sure this file is actually a GLB file?

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3

Later I found an error in my code taht does not hand in correct type to node.js fs.writeFile funciton. So what it writes to file supposed to be a glb file was just [object Object]. So that must be the reason of the error then.

Thanks a lot.

But what about the SceneLoader thing?

4

According to example in doc here Load from any file type - glTF, OBJ, STL, etc. - Babylon.js Documentation the args ommittable. So maybe it auto detects what is the file format.

5

If you don’t pass in the extension string, the loader will detect what kind of asset it is based on the file extension from the URL.

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