Microsoft Teams video footage without audio

I am using After Effects 2023 and have already imported several video clips and all them working fine.

However, just noticed that when I import mp4 videos generated from Micrsoft Teams conference recording, these videos are without audio in After Effects.

When trying to open these videos in Windows Media Player or other players, they are fine with audio + video.

However in After Effects these videos play with video but with no sound.

I have added to this very same Project in After Effects other clips from different sources and all them play with sound. Only videos generated from Microsoft Teams have no sound at all.

Any guess on what might be going on?

Thanks!