<html><body><div style="color:#000; background-color:#fff; font-family:arial, helvetica, sans-serif;font-size:10pt"><div><span>Thanks Karl .. will let you know how we get on .. defo much more than 15m.</span></div><div></div><div> </div><div>Paul</div><div><br></div> <div style="font-family: arial, helvetica, sans-serif; font-size: 10pt;"> <div style="font-family: 'times new roman', 'new york', times, serif; font-size: 12pt;"> <div dir="ltr"> <hr size="1"> <font size="2" face="Arial"> <b><span style="font-weight:bold;">From:</span></b> Karl Buckland <buckland.karl@gmail.com><br> <b><span style="font-weight: bold;">To:</span></b> Paul Lawrence <paul.z.lawrence@btinternet.com>; Kent Linux User Group - General Topics <kent@mailman.lug.org.uk> <br> <b><span style="font-weight: bold;">Sent:</span></b> Sunday, 18 January 2015, 15:15<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [Klug-general] HDMI over wifi ... ?<br>
</font> </div> <div class="y_msg_container"><br><div id="yiv1979898871"><div dir="ltr">I've looked into this previously, as I want to run HDMI from one room to another inside my home. <div><br></div><div>Unfortunately there is no such thing as true wireless HDMI. As Roger Gammans has noted, the bandwidth requirements are simply too high. Even to run HDMI over cat5 cable (not a network, but simply the cable) requires two cat5 cables of good quality. Even then, I've found that depending on the length of the run, 1080p may not be an option. In my case a 20m run of cat5 cables allows 720p but not 1080p. <div><br></div><div>There are products out there that claim to enable wireless HDMI. What they actually do, is convert and compress the HDMI signal and then send it over TCP/IP or using another proprietary method. Whether or not this is an acceptable solution for you depends on your requirements. I want to play movies over the HDMI connection, so
ideally I want a good clear uncompressed signal. If you do go with the wireless route, then the quality of the resulting picture (and audio) depends on signal strength, so if you have a lot of other wireless signals in the sane frequency range then that will cause you problems. I also expect that if you need to go through a thick church wall, then that might present an issue?</div><div><br></div><div>From what I can see the best results actually come from high quality HDMI cables (such as those made by BlueRigger), but even there most cables have problems when they get near the 50m mark. If you need to run anywhere near that length, then all bets are off, and you'll need to experiment. Also, before anyone chimes in about 'expensive HDMI cables' - yes it's true that over short runs (less than a couple of metres) even the cheapest HDMI cable will be absolutely fine. Over longer runs that simply isn't the case. Even the smallest signal degradation will
bring HDMI to its knees. The higher quality long-run cables have thicker wires to prevent that signal degradation over such a distance. You can also find some cables with 'boosters' in them (or buy separate powered boosters separately). I haven't tried these boosters, So I can't vouch for their effectiveness. My own setup is now a 15m BlueRigger HDMI cable, which can do 1080p with no issues.</div><div><br></div><div>Hopefully this is helpful for you.</div><div><br></div><div>Karl</div><div><br></div></div></div><div class="yiv1979898871gmail_extra"><br><div class="yiv1979898871gmail_quote">On 18 January 2015 at 12:22, Paul Lawrence <span dir="ltr"><<a rel="nofollow" ymailto="mailto:paul.z.lawrence@btinternet.com" target="_blank" href="mailto:paul.z.lawrence@btinternet.com">paul.z.lawrence@btinternet.com</a>></span> wrote:<br><blockquote class="yiv1979898871gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc
solid;padding-left:1ex;"><div><div style="color: rgb(0, 0, 0); font-family: arial, helvetica, sans-serif; font-size: 10pt; background-color: rgb(255, 255, 255);"><div style="margin-bottom:0cm;line-height:100%;"><font face="Courier 10 Pitch"><font style="font-size:10pt;">Hi
Group</font></font></div><div style="margin-bottom:0cm;line-height:100%;"><br>
</div><div style="margin-bottom:0cm;line-height:100%;"><font face="Courier 10 Pitch"><font style="font-size:10pt;">Some
advice please.</font></font></div><div style="margin-bottom:0cm;line-height:100%;"><br>
</div><div style="margin-bottom:0cm;line-height:100%;"><font style="font-size:10pt;"><font face="Courier 10 Pitch">I've
been working with a group to install a </font><font face="Courier 10 Pitch">giant
</font><font face="Courier 10 Pitch">TV in </font><font face="Courier 10 Pitch">my
local</font><font face="Courier 10 Pitch"> church </font><font face="Courier 10 Pitch">(12</font><sup><font face="Courier 10 Pitch">th</font></sup><font face="Courier 10 Pitch">
Century and therefore the structure is highly regulated) </font><font face="Courier 10 Pitch">for
presentations/videos etc and using maybe Easyworship </font><font face="Courier 10 Pitch">software
</font><font face="Courier 10 Pitch">to manage the displays. </font><font face="Courier 10 Pitch">The
TV is lowered and raised from the roof area as required </font><font face="Courier 10 Pitch">(which
required lots of permissions)</font><font face="Courier 10 Pitch">
</font><font face="Courier 10 Pitch">The arrangement is </font><font face="Courier 10 Pitch">based
on a</font><font face="Courier 10 Pitch"> graphics card in the PC
</font><font face="Courier 10 Pitch">that </font><font face="Courier 10 Pitch">has
HDMI out. Distance from PC to TV must be </font><font face="Courier 10 Pitch">at
</font><font face="Courier 10 Pitch">about 50m</font><font face="Courier 10 Pitch">
</font><font face="Courier 10 Pitch">which we manage using a pair of
HDMI over Cat5 boxes. This works pretty well.</font></font></div><div style="margin-bottom:0cm;line-height:100%;"><br>
</div><div style="margin-bottom:0cm;line-height:100%;"><font face="Courier 10 Pitch"><font style="font-size:10pt;">Fig1:</font></font></div><div style="margin-bottom:0cm;line-height:100%;"><br>
</div><div style="margin-bottom:0cm;line-height:100%;"> <font face="Courier 10 Pitch"><font style="font-size:10pt;">PC&HDMI
→ Convert to Ethernet → 2xCat5 → Convert to HDMI → TV</font></font></div><div style="margin-bottom:0cm;line-height:100%;"> <font face="Courier 10 Pitch"><font style="font-size:10pt;">I</font></font></div><div style="margin-bottom:0cm;line-height:100%;"> <font face="Courier 10 Pitch"><font style="font-size:10pt;">line-out</font></font></div><div style="margin-bottom:0cm;line-height:100%;"> <font face="Courier 10 Pitch"><font style="font-size:10pt;">I
</font></font>
</div><div style="margin-bottom:0cm;line-height:100%;"> <font face="Courier 10 Pitch"><font style="font-size:10pt;">V</font></font></div><div style="margin-bottom:0cm;line-height:100%;"> <font face="Courier 10 Pitch"><font style="font-size:10pt;">sound-desk</font></font></div><div style="margin-bottom:0cm;line-height:100%;"><br>
</div><div style="margin-bottom:0cm;line-height:100%;"><font face="Courier 10 Pitch"><font style="font-size:10pt;">Enables
us to play the presentation on TV and manage the sound via existing
sound-desk and sound system.</font></font></div><div style="margin-bottom:0cm;line-height:100%;"><br>
</div><div style="margin-bottom:0cm;line-height:100%;"><font face="Courier 10 Pitch"><font style="font-size:10pt;">The
Cat5 is proving unreliable (and very untidy) and we've looking at
ways of using wifi (and currently an AppleTV box) to replicate the
above.</font></font></div><div style="margin-bottom:0cm;line-height:100%;"><br>
</div><div style="margin-bottom:0cm;line-height:100%;"><font face="Courier 10 Pitch"><font style="font-size:10pt;">Fig
2:</font></font></div><div style="margin-bottom:0cm;line-height:100%;"><br>
</div><div style="margin-bottom:0cm;line-height:100%;"> <font face="Courier 10 Pitch"><font style="font-size:10pt;">iMAC/PC
→ wifi → Airport → wifi → Apple TV → TV</font></font></div><div style="margin-bottom:0cm;line-height:100%;"><br>
</div><div style="margin-bottom:0cm;line-height:100%;"><font face="Courier 10 Pitch"><font style="font-size:10pt;">We
can use Airport router and Airparrot2 software to send to an Apple TV
box plugged into the TV HDMI to display the video but no sound comes
from the PC - all sound is from the TV. An alternative could be a
Chrome browser to 'cast' the tab to a Chrome dongle but I suspect the
same result. </font></font>
</div><div style="margin-bottom:0cm;line-height:100%;"><br>
</div><div style="margin-bottom:0cm;line-height:100%;"><br>
</div><div style="margin-bottom:0cm;line-height:100%;"><font face="Courier 10 Pitch"><font style="font-size:10pt;">1.
Am I right in thinking that when using Airparrot2/Chrome browser the
PC has no action in decoding the file merely streaming to the TV? And
that is why we get no sound from PC. Which leads me to think we'll
need to connect the TV to the sound desk via one of the sound input
XLR points.</font></font></div><div style="margin-bottom:0cm;line-height:100%;"><br>
</div><div style="margin-bottom:0cm;line-height:100%;"><font face="Courier 10 Pitch"><font style="font-size:10pt;">2.
If we cannot repair/re-run the Cat5 .. is there a (cheap) way of
sending HDMI over wifi?</font></font></div><div style="margin-bottom:0cm;line-height:100%;"><br>
</div><div style="margin-bottom:0cm;line-height:100%;"><br>
</div><div style="margin-bottom:0cm;line-height:100%;"><font face="Courier 10 Pitch"><font style="font-size:10pt;">Thanks</font></font></div><span class="yiv1979898871HOEnZb"><font color="#888888"><div><span>
</span></div><div style="margin-bottom:0cm;line-height:100%;"><br>
</div><div></div><div> </div><div>Paul</div></font></span></div></div><br>_______________________________________________<br>
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