Powerline noise in captured video

[Alan69]

Ok I just tightened the ground on the cables coming into the house and unless im crazy things have been corrected im doing a fresh capture just to make sure ill let you know what i find

Ha seems you've already corrected it while I was typing my reply. They often oxidize and loosen over time since they're outside, so this is a common problem.

Alan

[Tperez2]

I think that fixed the problem. I ill have to wait a few days and see if they return. I also notice that some of the compression artifacts that i was seeing in my captures were actually in the source video. if i look very closely at the tv i can see they same artifacts especialy around text. I originaly thought it was just a problem with the tv since been around a while but i guess they compress the regular channels more then they do the movie channels..

[lordsmurf]

Another good day for videohelp .... we solved it

[Tperez2]

Yes I would like to thank everyone who took the time to help solve my problem.

I just wish i had found this before i took a soldering iron to my card and moved the 2 inductors off the board like i saw in a different post here on video help. it didnt hurt the board but it didnt fix the problem either and it did void my warranty. Well i never overclock my stuff so im hoping it will die a few days after the warranty expires like it is supposed to

[miksu]

One thing about grounding equipment: if you don't have grounded wall outlet, you can use extension cord with grounded outlets. If you do it, all your devices have same "ground", namely, the one connected via extension ground. And all your equipment is using same phase of current. They may be using different phase ("wire") if they are connected to outlets everywhere around your house and have voltage difference.

In Europe, we usually have 3-phase ("wire"), 240V (rms) at 120degree phasedifference. That is, utility company supplies electricity using three phase wires, one neutral (+ground). In USA, I think your "heavy duty" electricity, since it's using 220v, is two ("wire") 110V(rms) phases at 0degree difference, resulting +110V+110V=220V? And likely, two phase wires, one neutral and ground?

Difference in ground-potential is known to cause moving bar in screen, maybe it causes noise, too? Voltage phase difference may cause fried electronics at worst.