Post by Marty
Windows Media Center.
Win 7 Pro
1) on the PC with the Hauppauge 2500 dual TV adapter some TV recording
go to one folder and others go another folder.
How do I get all to go to the same folder ?
Recording have recent dates like yesterday and day before.
These are Created Date, not original program date which is Date.
Folders are User\Recorded TV and Public\Recorded TV.
I cannot find a place to set a record destination.
2) Several L.A. CA TV stations changed frequency today.
They said a rescan was necessary today.
But, my Toshiba TV seems to have found them unassisted, sort of.
58.1 is nogo, 58.2 and 58.3 OK. 58.4 nogo.
However, the Hauppauge adapter rescan found only one, Ch 28.x and
A rescan still left Ch 58.x and subchannels blank.
"As of Monday, April 23, 2018 KLCS will no longer be able to carry
FNX channel 58.4. FNX programming is available to watch online at
https://fnx.org/watch/ over the air on 24.2, DirecTV 24.2 or
The station's digital signal remained on its pre-transition UHF channel 41,
using PSIP to display KLCS's virtual channel as 58 on digital television
The station's digital channel is multiplexed:
Channel Video PSIP short name Programming
58.1 720p KLCS-1 Main KLCS programming / PBS
58.2 480i KLCS-2 PBS Kids
58.3 480i KLCS-3 Create
FNX was broadcast on 58.4 from December 30, 2015 until April 22, 2018.
That means physically, there is a 6MHz channel on physical
channel 41 (632-638 Mhz). (If you were using VLC to watch
TV in Linux, you'd set the frequency to 638MHz on the
Hauppauge tuner.) And at the moment, three digital
channels are multiplexed into the 6MHz bandwidth. That means
there are packets for three streams, coming out of the
data recovery of the tuner, and when you select 58.1 it
"selects" just the packets for that. The other two packets
are thrown on the floor, essentially.
(On Linux, you can use w-scan or w_scan to "survey" your
airspace and determine what signals are present. You must
have the firmware for your tuner loaded in the OS. I
remastered a Ubuntu DVD and added a single firmware file
to it, just so I could "boot and watch TV" :-) VLC does
the watching. Unfortunately, the TV tuner feature
in the Windows VLC, doesn't work, not even in VLC 3.
This is why I have a Linux disc for that purpose,
"verifying the airspace".)
"...sub-grouped as interleaved data packets for broadcast
over a network or modulated multiplexed medium, which
are split out at the receiving end"
It sounds like the Hauppauge either doesn't have the
same channel sensitivity as the Toshiba, or there is
an "on-purpose" blanking of physical channel 41 ?
Are the two devices fed from a 1:2 splitter ?
Do they use entirely separate broadcast antennas ?
(My Hauppauge and my STB are fed by a 1:2 splitter, and the
Hauppauge receives twice as many channels as the STB.)
It doesn't sound like you're on cable, it sounds like
an OTA situation judging by the numbers you quote
for the channels.
Here, I have only one broadcast channel that multiplexes,
and it is multiplexing HD and SD with the same content,
as elements of its multiplex. Which to me seems pretty
pointless, but, I'm just a TV watcher and what do I know.
The rule of thumb used to be "cable multiplexes like crazy,
while OTA sends one stream per channel". But it looks like
the pressure is on your TV market, to shave more channels
off the top end. Here, 720p is probably as low as we go,
and nobody would transmit 480i on OTA.
One other thing to note - I don't think Windows really scans.
It could be using TV Guide data to determine it should
look at channel 58. There might be some problem with
the logic Windows uses, and I don't remember which
comes first there, the cart or the horse. There was
some little trick to getting mine to work right, as
at first, Media Center refused to look for digital
TV signals at all. Canadians need a "trick" to make
it work. It probably "just works" in the USA. Maybe
you can manually edit the channels ? I don't remember
now. Manually editing the channels helps some
times, to remove weak channels that only
prevent quick access to the strong channels.
One issue my Hauppauge has, is the driver insists on
a giant buffer, and the channel change time is 10x
longer than my STB. And the STB wasn't exactly
heroic on channel speed either, but the Hauppauge
is positively lethargic. I know what it's doing...
but I'm not impressed.