<div dir="ltr"><div dir="ltr"><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sat, Jun 10, 2023 at 6:30 PM Ken Mandelberg <<a href="mailto:km@mathcs.emory.edu">km@mathcs.emory.edu</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">I'm trying to understand 4K TV. I'm in the US and use Xfinity, <br>
independently with MythTV via HDHomerun cable box, and for On Demand and <br>
SVOD their X1 DVR.<br>
<br>
I have been happy with my 40" 1920x1080 native TV and have been ignoring <br>
4K, but recently I experimented with a projector with the same HD native <br>
resolution projecting a 90" diagonal image. It was OK, but at that size <br>
from 7 feet away the sharpness defintely was a bit disappointing. I <br>
presume that no matter what the source that projector's resolution would <br>
be a limitation.<br>
<br>
That made me wonder if even with a higher native res projector, or a <br>
larger 4K TV whether the media would become the limitation. That raised <br>
the questions<br>
<br>
* What 4K programming is there over Xfinity cable. Is it just a few <br>
premium channels and no broadcast networks.<br>
<br>
* Can the HDHomerun Cablecard box deliver "ts" files at 4K resolution?<br>
<br>
* Can the mythfrontend on Linux generate 4K HDMI output from the ts files?<br>
<br>
* Same question for Leanfront on a 4K firestick.<br><br></blockquote><div><br></div><div>Cable TV has been scrambling to hold on to their viewers. I think you may be the last one I know of :-)</div><div><br></div><div>Around here a lot of cable TV guys are only supplying the Internet and have a streaming app for what they used to offer with a cable box.</div><div><br></div><div>Most cable boxes I know of don't do 4K and most cheat at 1080i compared to over the air.</div><div><br></div><div>mthfrontend doesn't do 4K AFAIK. However, on my UHD 4K TV I have connected a PC running 4k that uses its own image enhancement to improve the quality of the original HD signal. At least I think it does. Looks great.</div><div><br></div><div>Leanfront on the Firetv is the best picture I get from mythtv, but the original content is only HD, so it's good, but technically not 4K. Firetv does great with 4K sources like NetFlix, etc.</div><div><br></div><div>Jim A</div><div><br></div><div><br></div><div> </div></div></div>