Question Audio crackle?

[mat1995]

Hello
I have this video , i´ve wanted to know if this is a hardware issue
Near the end of the video there is a crackle

View: https://www.youtube.com/watch?v=mdZYjCilyjE

(59 seconds)
Thank you

 

[mat1995]

View: https://www.youtube.com/watch?v=InwWmeNeZYU&ab_channel=Matheus

It happened again in this video
If anybody knows what could be it please let me know
Thanks