H5P video without sound

Hi,

 

I have an issue with H5P : I've uploaded a video that is working fine, with sound on it, but when i uploaded it it doesn't contain any sound on h5p, what can i do please ?

 

Because when i worked on it and improve it with h5p, and i want to use the embed, it still not contains any sound :(

 

Thanks.

 

Kind regards,

 

Ghalia