<html>
<head>
<meta content="text/html; charset=windows-1252"
http-equiv="Content-Type">
</head>
<body bgcolor="#FFFFFF" text="#000000">
<div class="moz-cite-prefix">On 11/17/2016 12:40 PM, Ian Evans
wrote:<br>
</div>
<blockquote
cite="mid:CABiY0=ingkxU39_zi70JBDn0mFr-nSEr1LhPATYkBFPs_CqkOg@mail.gmail.com"
type="cite">
<div dir="ltr">
<div>
<div>
<div>This isn't a pressing issue, but more a "just curious,
learn something everyday" type of thing.<br>
<br>
</div>
Sometimes when watching a music awards show or concert
footage, the picture can go crazy if there's a quick change
of lighting or fast strobing effects. Suddenly the picture
goes from the crystal clear bronze glow of the <span
class="gmail-st">Zildjian cymbals and chrome on the drum
set to a blocky visual worthy of an 8-pixel video game
emulator.<br>
<br>
</span></div>
<span class="gmail-st">Is that how it's coming from the
source? Is it a temporary deinterlacing issue caused by
elves? Will the right video card prevent it?<br>
<br>
</span></div>
<span class="gmail-st">Curious minds want to know. :-)<br>
</span></div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
<pre wrap="">_______________________________________________
mythtv-users mailing list
<a class="moz-txt-link-abbreviated" href="mailto:mythtv-users@mythtv.org">mythtv-users@mythtv.org</a>
<a class="moz-txt-link-freetext" href="http://lists.mythtv.org/mailman/listinfo/mythtv-users">http://lists.mythtv.org/mailman/listinfo/mythtv-users</a>
<a class="moz-txt-link-freetext" href="http://wiki.mythtv.org/Mailing_List_etiquette">http://wiki.mythtv.org/Mailing_List_etiquette</a>
MythTV Forums: <a class="moz-txt-link-freetext" href="https://forum.mythtv.org">https://forum.mythtv.org</a>
</pre>
</blockquote>
That is compression artifacts. Usually due to insufficient
bandwidth to encode the video. This is typically introduced by the
local broadcaster, most of which choose quantity (i.e., more
subchannels) over quality (i.e., a higher bit rate).<br>
<br>
Jay<br>
</body>
</html>