Intro video: audio sync issue

[steve88]

I created an introduction video with the following properties:

https://i.ibb.co/48RRFQM/Immagine.png

from vlc (videolan) the video is reproduced perfectly, while on attract mode the audio-video synchronization is slightly lost, which for the type of video with sound effects that I made is a big problem. is it possible to make some intervention in "intro.nut" or am I doing something wrong, or is there actually a problem?

the computer is of the latest generation, both as a cpu and as a gpu (the pc on which I will run on attract mode will be an old pc, things could be even worse, I still have to carry out the tests).

thank you all!

[steve88]

is it happened to somebody else? thanks!

[hermine.potter]

there exists different threads to video problems (and converting them to specific container, framerate, and so on).
maybe there is something helpful for you.
Here
Here
Here