lorisk

morning team. yesterday on cold start it seems my chain or something has gone loose or deprived of oil.
.attached is a video of the noise i have

it goes away after 3-5seconds of starting the car from cold over night.
once it goes away it, stays away, all day. but when cold, it comes back for 3-5seconds.

any ideas?

its a 2007 holden commadore
mild cam, double row gear and chain.
1 year since the job was done.