HD working for me as well.  Does anyone know how to get the mosaic channel ? ... View more

Still not working for me. If they get it up and running once hockey is over, I would like to see a significant discount. But don't think that will happen. Strange that no comcast person has mentioned anything on this thread since the couple of posts near opening day. ... View more

You are right. Today is day 5 and still no HD. No mosaic channel. No home and away broadcast selection.  Comcast should reply to this thread and give us the details. Even set up a special number to call regarding the extra innings problems.  I'm just waiting it out this week to see what happens. Really horrible service by comcast/xfinity. ... View more

To all the people having trouble with mlb.tv, I think there is still hope. Just keep trying is my suggestion. I have watched games on mlb.tv app on my smart tv, mlb atbat app on my phone, and mlb.com on my computer. I was able to link my mlb extra innings subscription to my mlb account and it worked fine.   Extra innings is the product provided by mlb to the cable and satellite providers. It includes mlb.tv. If the provider is holding it back, then I suggest contacting mlb.com and let them know what's going on.   This is really bad service/information by comcast/xfinity. In fact, I would imagine it is fradulent in a criminal sense. But I'm no lawyer. I'm hoping the full hd channels are available once hockey ends and I'll switch back to directv before next baseball season.  ... View more

So, I purchased mlb ei hd and now I have to wait until hockey is over to get it ? This will be my first and last year with xfinity. What a ripoff. Back to directv. ... View more

Day 3 and still no hd extra innings channel. Wow, this is ridiculous.   I am still able to access games on mlb.com. Haven't checked the mlb.tv app on the smart tv yet today, will check it later.   If you are having trouble getting your extra innings account linked to your mlb account, I suggest keep trying. I would try it again myself, but I don't want to screw it up now that it works. ... View more

Thanks  Mcctunester. Maybe this will get them working on it ASAP. The good news is that I have been able to get the MLB.TV stuff working just dandy. Have now run on my phone (with mlb atbat app), on my computer at mlb.com, and tonight watched games in hd through the MLB.TV app on my smart tv (Samsung).  If anyone is having trouble, please remember that the only time you provide your comcast/xfinity credentials (username & password) is when you link to your mlb.com account. Then use mlb.com credentials for everything else.   ... View more

check this thread - http://forums.xfinity.com/t5/Channels-and-Programming/MLB-Extra-Innings-Beta-Version/m-p/3070918 ... View more

comcastjessie, I believe you are spreading some bad information. First, HD channels are not working on my tv. I just tried again be checking the Reds-Nationals game. Just standard definition available. Can you verify that you are able to get the HD extra innings channels on your own tv ?   Second, I was able to link my extra innings subscription to my mlb.com account and am now able to watch (and listen to radio feeds) through mlb.com on my computer and the mlb atbat app on my phone.   If people are still unable to link their extra innings subscription to their mlb.com account, then I will gladly post some detailed instructions later. But first try again the link that was posted above - https://secure.mlb.com/tv/activate/?&affiliateId=clubMENU   In the meantime, perhaps comcastjessie can tell us when the HD feeds will be available through the extra inning hd beta channel. ... View more

Hey    robertmilelli, thanks a ton for that link. I was there earlier but it didn't work for me. Just tried again and it worked. My extra innings account is linked to my mlb.tv account and I am watching. Also checked audio only and that works as well.   So, to anyone worrying about mlb.tv - YES - it works and you get it with comcast/xfinity. At least I did.     If they can get the extra innings hd beta working quickly, then I'll be as happy as a pig in poo.   ... View more

I am bookmarking this thread and will post if I can get the HD channels working. My hope is that comcast/xfinity will have it fixed soon.  ... View more

Yes, and thank you for posting. My reply was directed to "comcastjessie" or anyone else at comcast. I guess I should have mentioned that in my original post. ... View more

Why are you posting this ? Clearly, "MLB Extra Innings HD Beta" is NOT working. Perhaps, as a previous poster said, they are working on it and it will be fixed soon. If that is true, then maybe you could please check up on it and let us know. I switched over from directv just this month because I was told all games were now in HD on xfinity. I have been trying all day but the "beta" does not work. If I say "MLB Extra Innings HD Beta" into the voice remote, the page appears on my screen. But when I click on a team that is currently playing, I get nothing. Nada. Zilch. Zero. In addition to this, I find out today that I don't get MLB.TV with "extra innings" through xfinity. When I had it through directv, I used it when traveling and also to listen to the audio broadcasts. Now, with xfinity, it appears I will need to pay an ADDITIONAL $115 for MLB.TV.   MLB is the most important thing for me, and I will probably revert to directv after this season. Then again, maybe comcast/xfinity will hear the pleas of myself and others and give us a better deal. But I'm not holding my breath.   Very disappointed. ... View more