overcompression

The breakups of signal - splotchy audio and tiled pictures - are direct symptoms of overcompression.

Comcast’s Blurry High Definition Picture - Bits Blog - NYTimes.com 2008

I think it was an artifact introduced by the encoder, aliasing or something similar from bad resizing/deinterlacing and blockiness from overcompression.

No Fat Clips!!! : Bravia: Domino City 2008

He argued that the material being shown was not even close to what he had originally shot, saying the severe color loss, overcompression of files and dimly lit material raise all kinds of questions about the sustainability of quality 3-D in theaters.

plenty of work to do before 3-D saves day 2005

He argued that the material being shown was not even close to what he had originally shot, saying the severe color loss, overcompression of files and dimly lit material raise all kinds of questions about the sustainability of quality 3-D in theaters.

Life of Brian: 2005

This occurred more often in the early episodes, and I wasn't sure if it was a result of overcompression (this set, like Season One, has five episodes on the first disc and four episodes, with extras, on each of the two remaining discs), or was simply not obvious on later episodes because of the change in lighting design.

Home Theater Forum Michael Reuben 2010

This occurred more often in the early episodes, and I wasn't sure if it was a result of overcompression (this set, like Season One, has five episodes on the first disc and four episodes, with extras, on each of the two remaining discs), or was simply not obvious on later episodes because of the change in lighting design.

Home Theater Forum Michael Reuben 2010