Does not support last version of jupyterlab about jupyterlab-mp4

[nerikosans]

Same issue for me, with Jupyter lab 2.2.6.

This is the error message shown when I try to install this extension:

The extension "@jupyterlab/mp4-extension" does not yet support the current version of JupyterLab.


Conflicting Dependencies:
JupyterLab                        Extension      Package
>=2.2.0 <2.3.0                    >=1.0.0 <2.0.0 @jupyterlab/rendermime-interfaces

I guess the problem is @jupyterlab/mp4-extension is dependent on "@jupyterlab/rendermime-interfaces": "^1.0.0", which supports only under Jupyter lab 2.0.0, although the latest release of @jupyterlab/rendermime-interfaces is 2.2.0.

So just upgrading the dependency version might solve the issue.