Describe what you call shimmering please.
Wheeler Dealerssigma1914 said:Describe what you call shimmering please.
Thanks for your help sigma. I'm at ease now.sigma1914 said:I watched the last 15 minutes of the show currently airing. I just saw it on the door. It's the show/channel....your equipment is fine. That door did weird psychedelic tricks for a moment. :lol:
Great technical explanation.TomCat said:I'll take a wild stab...
This happens when there is a change of resolution, either a change from the original to a different resolution (from the produced resolution to the network native rez) or from the received rez to the displayed rez, or any other sort of combination. It is especially noticeable when the original is interlaced, SD interlaced usually, and the change is to progressive, such as when watching an SD show on a 1080p monitor.
It also happens when there is a time-compression algorithm applied to the original material, which a lot of stations do.
It does not happen with most conversions, because most are done with care. Maybe not so much in this case.
If you have a situation visually where there are parallel lines close together, any motion can make those strobe against the frame rate of the video. It is not all that different from the "wagon wheels turning backwards" stroboscopic effect that 24 fps film can have. When there are not such lines or patterns, or no motion, the artifact is usually not visible. If the lines are close enough together, you get a moire effect (a similar artifact but with very close lines), which is why newscasters are told to never wear checked or tweed jackets or pinstriped shirts on camera. (taste alone would forbid that)
Dollars to donuts, without seeing what you are seeing, this is what you are seeing.
So, its normal; nothing is amiss. Its just part of the imperfect world of scanned video.