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TV-Bild am Monitor nicht gut!!!

TV Picture s.Monitor not good!



Frage von hansherten:
Februar 2009

TV Reception s.PC is bad, how can we improve the image quality?
The PC is with an approximately 7m. long antenna cable. This cable is s.einer Unity Media can have a distributor attached. The TV card is "Cyberlink Power VCRII"
Unfortunately, I have the fullscreen setting a very bad play. Do I need an amplifier?. if so, how?, or it may be synonymous s.der TV Card lie?



Antwort von robbie:

The reason is that PC monitors are not made for television, and you with a reduced quality of life need.



Antwort von thos-berlin:

A PAL TV picture has a Resolutionvon 720 x 576 and will score in this resolution formatfüllend displayed on a TV, for that was Resolutiongebaut.

The playback on devices with a higher Resolutionz.B: PC Monitor with 1280 x 1024 in full screen mode thus make a size change of the image needed. Unfortunately, the target resolution is not simply an integer multiple of the original resolution, but a "Krummer value." For this reason, the whole picture in "real time" will be rebuilt by the "missing" points - but actually all the pixels, since it is no longer part of "right place s.der are" - are calculated. This leads to a certain degree of fuzziness.

In addition, a PAL signal is interlaced, so minimal time in two staggered fields übertrasgen, while a PC screen always progressive displays, so the whole picture.

It is therefore of the quality of the software and the capabilities of the hardware, how well and how quickly these conversions take place.

The bottom line remains blurred and possibly kammartige distortions s.senkrechten lines with horizontal movements.

Since one in comparison to much closer Television SSPC-screen sits the whole thing falls synonymous even more striking.

The same problem has synonymous large HD-Ready television, but for the Fernsehrdarstellung technically optimized and are facing you are not entirely synonymous sits so close.

Regardless of which can be a bad antenna distributor or a bad antenna cable other causes for a non-optimal display his. This then manifests itself in more or less strong "snow" in analog signals, or "block training" to "dropouts" in digital antenna signals.








Antwort von hansherten:

Hi, thanks for the great explanations and the effort which you've done so.



Antwort von PowerMac:

Most of it is shitty s.einer Conversion of YCbCr (video) in RGB (PC) with gamma-shifts (as gamma values uneven) and codecs, the super white and super black ignore or simply live a poor quality (such as Chroma values suppressed or bad highly expected to 4:4:4). There are obviously problems in conversion of video to PC Resolutions Resolutions, a 1:1-mapping is the best option. Also, the temporal resolution is a problem, as when one video at 50 Hz has s.PC but 60 Hz Somehow, the time so filled with images. When videos are interlaced, the PC during the presentation either deinterlace or a half bouncer, which is detrimental to the quality of next. At the end is probably the last problem that PC monitors poorly or not at all are calibrated and of their technical characteristics do not provide particularly good picture, such as a weak gray for black.




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