SouthSIDE Glen
independentrecording.net
I upgraded my video display on my editing/mixing desk a few weeks ago; I now have a 22" 1080P LCD TV/monitor. When it comes to watching TV (not counting computer video, DVD, etc., but just talking about actual *television* programming), I limit myself to the new digital over-air broadcasts. (I don't want to go into why I don't do cable or satellite, that's a whole other story/thread that I don't want to get into.)
Anyway, I have noticed quite a bit of artifacting of a couple of types that look awfully familiar to me.
The first is in the display of art graphics (e.g. company logos and such on commercial advertising and some cartoon animations), where I often see artifacting that looks a awful lot like heavy JPEG compression, the kind we've all seen on some internet images with heavy JPEG, where you see sloppy dithering in a kind of digital "fog" around what should be sharp borders or small or narrow objects.
I also see a related kind of distortion when watching reruns of "Family Guy", where vertical lines or borders "ghost" horizontally; e.g. where there is a vertical black line, there are anywhere from 6-8 "shadow" lines ghosting to the right of the original. Interestingly, these artifacts do not show up in commercials for the show or in still pic bumpers for the show, only in the actual broadcasts.
The second artifact is a pixelated dithering in otherwise solid or very slightly shaded color swatches. This one is rarer, about the only place I can predict seeing it with any certainty is in the ivdeo screens showing the answers and the contestant's scores on the game show "Jeopardy' (which, curiously, advertises proudly as being in HD), but sometimes I see it in the playback of pre-recorded location video on newscasts.
This stuff does not happen all the time, by any means. In fact, it seems that live shows that broadcast in HD and use live HD graphics, such as newscasts (not playing back video) and the late-night talk shows are artifact-free. And in fact where it does happen the most is during commercials, though it's not all commercials by any means.
i know it's not my reception, I know what that kind of digital artifacting looks like. And I doubt it's my TV, because of the content-related pattern to the appearance of the artifacting (BTW, I never have any of this artifacting when watching VHS, DVD or computer video on that same TV).
It appears to me that perhaps (?) these artifacts may be caused by the behind-the-scened, post-prodution (or perhaps live?) conversion of an analog source to a digital signal, but that is only a guess on my part based upon the familar appearance of the artifacting to lossy-type compression I've seen in the computer world.
Does anybody have any insight to what just may be the actual process going on here? Just curiosity on my part.
G.
The second
Anyway, I have noticed quite a bit of artifacting of a couple of types that look awfully familiar to me.
The first is in the display of art graphics (e.g. company logos and such on commercial advertising and some cartoon animations), where I often see artifacting that looks a awful lot like heavy JPEG compression, the kind we've all seen on some internet images with heavy JPEG, where you see sloppy dithering in a kind of digital "fog" around what should be sharp borders or small or narrow objects.
I also see a related kind of distortion when watching reruns of "Family Guy", where vertical lines or borders "ghost" horizontally; e.g. where there is a vertical black line, there are anywhere from 6-8 "shadow" lines ghosting to the right of the original. Interestingly, these artifacts do not show up in commercials for the show or in still pic bumpers for the show, only in the actual broadcasts.
The second artifact is a pixelated dithering in otherwise solid or very slightly shaded color swatches. This one is rarer, about the only place I can predict seeing it with any certainty is in the ivdeo screens showing the answers and the contestant's scores on the game show "Jeopardy' (which, curiously, advertises proudly as being in HD), but sometimes I see it in the playback of pre-recorded location video on newscasts.
This stuff does not happen all the time, by any means. In fact, it seems that live shows that broadcast in HD and use live HD graphics, such as newscasts (not playing back video) and the late-night talk shows are artifact-free. And in fact where it does happen the most is during commercials, though it's not all commercials by any means.
i know it's not my reception, I know what that kind of digital artifacting looks like. And I doubt it's my TV, because of the content-related pattern to the appearance of the artifacting (BTW, I never have any of this artifacting when watching VHS, DVD or computer video on that same TV).
It appears to me that perhaps (?) these artifacts may be caused by the behind-the-scened, post-prodution (or perhaps live?) conversion of an analog source to a digital signal, but that is only a guess on my part based upon the familar appearance of the artifacting to lossy-type compression I've seen in the computer world.
Does anybody have any insight to what just may be the actual process going on here? Just curiosity on my part.
G.
The second