please anyone

You need to better describe what your problem is.
Use Google Translate or at least write it in here in your local language so that people who want to help you can translate it.

You need to better describe what your problem is.
Use Google Translate or at least write it in here in your local language so that people who want to help you can translate it.

the problem is when i try to edit videos audio disapear and back and again something like that look to the video so u can know

@marouan  ... you have provided no detail about the problem, just an overview. Please refer to the following link with particular regard to Sections B and C:

https://www.vegascreativesoftware.info/us/forum/important-information-required-to-help-you--110457/

If you are using Google Translate or similar, it is not working particularly well as what you've just posted is almost gobbledygook. As requested by walter-i. you can also post in your home language so that browser language translators can translate into English, German or other.

Please note that the video that you originally posted does not explain the problem very well as all it shows is both the video and audio looping - but not due to the looping markers which are placed much wider.

i can explain with longer video

my internet is trash that's why the video is like that

We cannot be served with another video to help you.
Better to let us download a smal part of that used file plus you project veg without further content. Place it on a site as dropbox, or another site to share files, so we can download the file and your projectfile to try out on our hardware to see what maybe is wrong.