No sound coming out of a video

Hello,

I’m trying to work with a backing track so that I can transcribe a vocal lead easily (especially for rhythmic aspects). Everything worked, but suddenly, there is no sound any more. The video track is not muted in the mixer. I tried to detach and then reattach the video again, with no luck.

Has someone experienced something similar?

Maybe I need to give you more details, so don’t hesitate to tell me what to do.

Thank you.