Hacking Windows 7 Media Center

Manually adding ClearQAM channels to 7MC

by Michael Healy @ 1:37 am on January 20th, 2009 in Atsc\ClearQAM, tv listings with 17 Comments and Permalink

hdtv Adding ClearQAM channels to your Windows7 Media Center can be quite a daunting process. With regard to previous version of Media Center though it’s still quite an improvement as before there was no native support for ClearQAM whatsoever. ClearQAM is generally broadcast in the United States through your cable provider and typically only consists of the basic broadcast channels you would be able to get through an antenna. The advantage to these channels over regular cable is they come in as HD channels for free.

The first step is to check your tuner manufacturer’s website for the most recent drivers for your particular tuner card. If there are newer drivers you may want to install these before going on. The next step is to run a normal TV Tuner setup in Media Center. If you have already run the initial setup you can run the tuner setup again by going to Tasks > Settings > TV > Setup TV Signal. Follow this wizard and be sure you have an available ClearQAM tuner presented during the setup and follow through the TV Channel Scan.

Note: Certain older Hauppauge cards may need a registry fix which can be found here at Mike Wren’s blog.

Often this scan returns "0 channels found", fear not. Once you have completed the wizard, you will most likely need to add these channels to your TV listings manually. Go to Tasks > Settings > TV > Guide > Edit Channels. Here you will be presented with what is most likely a lengthy list of channels with your basic cable channels numbers and labeled. Just past these neatly organized channels, though, you will find a mess of channels marked simply with numbers and displaying (or not) a small lock beside them. This is the cash crop, these are ClearQam channels.

Once we have come to this point enable the "Show Preview" option on the left and scroll down through the ClearQAM channels until you come to one or more that do not show the lock icon beside them. You can also refer to SiliconDust’s webpage to identify ClearQAM channels you will likely receive in your area. Selecting the channel name on the right with "Show Preview" enabled should bring up the channel in the background and play audio from the channel. If you don’t see/hear this it may be a false positive and you should move on until you find one that comes in correctly.

When you reach a ClearQAM channel that comes in properly mark the checkbox next to the channel number to enable this channel in your TV guide listing. Once you’ve completed marking all the channels that come in save your settings on the left then we’ll move on to setting up the channels in the guide.

Enter your TV guide listing from the main menu and scroll until you come to the channels you just added to your guide listing. You’ll notice that none of these channels have names or program data associated with them. To change this click on the channel number on the left and then select "Edit Channel".

Here you can once again refer to your local ClearQAM listing through Silicon Dust’s site if the channel numbers match that listing you can simply watch the channels momentarily to determine which channel you are viewing. Then you have the option of Renaming the channel and Editing Listings associated with the channel. Note that when possible you should choose the listing associated with a "DT", "DT2", etc after the callsign as these will give you the listings for the digital channel and include any HD information that is available.

That’s it, you should now be able to enjoy your ClearQAM channels from inside Windows 7 Media Center!

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17 Comments


clayton
Comment #350 from clayton [Reply]

you’re a goddamn live saver man
thanks for this, would have been lost for a long time without it.

Comment left April 15, 2009 at 2:47 am with Permalink
Comment #473 from NickDeMayo [Reply]

I’ve got a question…is it possible to back these settings up, for future use should I ever have to reload windows on that box?

Comment left April 27, 2009 at 11:43 pm with Permalink
@Reply #475 from MichaelHealy [Reply]

Currently, restoring backed up lineups into Media Center results in duplicate listings. I believe someone may need to create an app to only enter channels not listed already from the backup files before we can use them. I’ve not tried with the Windows 7 RC yet though.

Comment left April 28, 2009 at 11:22 am with Permalink

Nick
Comment #1444 from Nick [Reply]

Anyway to force MC to use a different set of listings? I live in an area with a custom channel lineup over analog cable, but it uses channels from expressvu here in Canada. In Vista I was able to choose the local digital cable listings and create a custom lineup with that, but with 7 RC1 it will only allow me to choose the analog channel listings (which are missing at least half the channels through our distro). Any way to force MC to use the digital listings of an area instead of automatically choosing the analog ones?

Comment left June 5, 2009 at 2:35 am with Permalink
@Reply #1447 from Michael Healy [Reply]

Could you not just edit channel listings and names from the guide by selecting the channel number that’s wrong and going to edit channel?

Any channels that are missing from the guide completely could be added through the guide settings under Tasks -> Settings -> TV -> Guide -> Add Missing Channels.

Comment left June 5, 2009 at 9:10 am with Permalink

Nick
@Reply #1449 from Nick [Reply]

Thanks – that’s definitely one step closer to what I am looking for. The problem that I am running into is that there are channels not listed under the analog, but do appear under the digital listings. I can manually add those channels now, but I would love to have a way for it to download guide listings for those as well.

Comment left June 5, 2009 at 10:58 am with Permalink
@Reply #1452 from Michael Healy [Reply]

Once you select Edit Channel from the guide for the channel you want to get listings for you should be able to select Edit Listings and then assign a set of listings for that channel.

For example, if you add BBC go to that channel in the guide, select Edit Channel – Edit Listings and find BBC in the list and save that listing to that channel. Then the show listings for BBC would be assigned to that channel in the guide and should be downloaded normally.

Even with my guide setup for analog listings I’m still able to choose from over 1000 different channels in the listings options, including digital channels. Do you get the same or are your channel listing options much smaller?

Comment left June 5, 2009 at 12:07 pm with Permalink

Nick
Comment #1460 from Nick [Reply]

Thanks for the reply – the issue is that RC1 will not allow me to choose the digital listings (with all the channels I need) and only automatically chooses the analog one (with 60 or so channels). This does work with Vista, but RC1 won’t let me choose digital listings.

Comment left June 5, 2009 at 6:56 pm with Permalink
Comment #1958 from Shaun [Reply]

I am having some problems after upgrading from Beta to RC. I posted on the Green Button forums here:

http://thegreenbutton.com/forums/372714/ShowThread.aspx#372714

Any help from here would be appreciated.

More details in the post, but here is a summary of the problems:

Problem 1)

The automatic setup doesn’t find my standard cable channels. I can manually add the Qam channels in, but why doesn’t it find the regular cable channels?

Problem 2)
When I set up the guide listing for the newly added Qam channels, the listings are 3 hours off (but computer clock is fine).

Thanks a bunch.

Comment left July 2, 2009 at 4:39 am with Permalink

Ken Clements
Comment #2108 from Ken Clements [Reply]

Noobie question… so does the ClearQAM capability in Windows 7 mean I can get rid of my HDHomeRun and just directly plug the cable coax into the tuners on my PC?

Thanks,
-Ken

Comment left July 13, 2009 at 10:09 am with Permalink
@Reply #2109 from Michael Healy [Reply]

As long as you’ve got a ClearQAM capable tuner in your machine, yes. I personally use a Hauppauge 2250 and an AverMedia Duet that perform beautifully with ClearQAM.

Comment left July 13, 2009 at 11:47 am with Permalink

Reed
Comment #2174 from Reed [Reply]

I just purchased a Hauppauge HVR-1600 and followed the steps in this guide, including the registry hack. The randomly numbered channels show up in the edit list, but I can’t watch the ClearQAM or the analog cable channels when connected to the ATSC/ClearQAM input. The analog channels work fine in the cable input though.

I even checked out Shaun’s other forum post, but the analog cable channels still won’t show up.

Comment left July 17, 2009 at 11:51 pm with Permalink

Shane
Comment #2562 from Shane [Reply]

Question if anyone has any ideas. I’m using 2250 with win7 RC. It finds 5 DT channels but I don’t get any of the HD channels and the 5 channels I do get are not correct. What I mean is that 5.1 should be our local CBS HD feed but instead I see what’s on 17.2 the NBC #2. Anyone have a suggestion?

Comment left August 6, 2009 at 10:36 pm with Permalink

Matt
Comment #3225 from Matt [Reply]

Has anybody been able to get WMC to recognize a Dvico Fusion 5 USB as a clearqam capable tuner? I have the latest drivers from Dvico and I am able to tune in clearqam channels using the Dvico software, but can’t with mediacenter. I’m using Win7 Ultimate x64 RTM.

Comment left September 13, 2009 at 4:15 pm with Permalink

JohnP
Comment #3789 from JohnP [Reply]

Is there a batch way to correct ClearQAM channel guide data? I find going through the menus over and over for 100+ channels is tedious. I guess having over 100 clearQAM channels is a blessing. Perhaps knowing which files and the format of those files would be enough for me to hack something together in perl?

Fantastic website. Wish I found this a few weeks ago.

Thanks in advance.

Comment left October 4, 2009 at 8:32 pm with Permalink

Ichinisan
Comment #5620 from Ichinisan [Reply]

I have two Hauppauge WinTV HVR-2250 dual QAM cards installed for 4 QAM and 4 NTSC tuners on two cards.

I was disappointed that it found NONE of the digital QAM channels automatically. I had to manually add each of the frequencies by looking at the channels found by my Sony KDL-52XBR2 TV.

One thing that REALLY annoys me:
The QAM tuner in my Sony TV somehow finds the local ABC affiliate (WSBTV) on channel 0. The LG and Samsung TVs at work (same cable provider) can’t find ch 0 in a scan, and refuse to switch manually to ch 0. Likewise, 7MC will not allow me to manually add Ch0. The “Next” button will not enable unless I type in some number other than 0. Ugh!

I selected the option on my TV to display tuner diagnostic details while I was tuned to that channel. It seems to indicate that the channel uses QAM256 modulation.

When I added all of the other channels to 7MC, I used QAM64 and they all worked. If this one uses QAM256, it’s the only one that does.

Even so, 7MC won’t let me specify the modulation type until after I type in the frequency, and it WILL NOT accept a frequncy of “0″.

I don’t know if QAM on Ch 0 violates some spec. I would assume so because my Sony TV is the only one out of 4 QAM-capable devices I’ve tried that can do it.

I don’t know if I’m dealing with a hardware, firmware, driver, or 7MC GUI limitation.

I emailed the lead cable engineer a few days ago (I work on the Internet side of the same local cable company) and he hasn’t responded to me yet.

Comment left December 11, 2009 at 10:02 pm with Permalink

Vivek
Comment #6526 from Vivek [Reply]

Thanks for the method.

However guide still displays no data for these newly added channels. Is there any way to get the guide to display programming lineup for the new channels?

thanks.

Comment left January 11, 2010 at 2:49 am with Permalink

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