Black bars on TV

And yes I don't need to do anything to watch an HD channel because the DVR and TV boxes are automatically autotuned to go to the HD channel.

I just thought of a good example to share. When I used to have the Turner Classic Movie (TCM) channel, which they removed from my package a little over a year ago, all the black and white movies (silent movies, movies from the 30s, 40s and 50s) were in full screen mode. Also, I had recorded numerous TCM black and white movies on my old DVR box, and they were in full screen mode. When I went to the store to pick up my new equipment, I was told my old DVR box wasn't compatible for transferring all my recordings to the new DVR box. I wasn't happy about losing my TCM recordings.

So it's clear something has changed.

Thank you for your clarification about the filter.

A few things I forgot to mention:

-The tech had also replaced the cable line running from the box to my house.

-My old equipment broadcasted all SD and HD channels in full screen mode without any vertical or horizontal black bars.

-After activating the DVR box (on 11/28/2020), it displayed all SD channels in full screen mode. When my TV box finally started working, it also displayed all SD channels in full screen mode.

-Techs have also checked and verified the settings are all correct for the DVR and TV boxes.

-Nothing changes either when I try to change the aspect ratio on the TV itself.

So I don't understand why I had full screen mode on my old equipment and also after activation of the DVR and TV boxes, and then not until the cable line was replaced and the filter installed that it changed.

In all the years of being with Comcast and doing multiple upgrades of equipment, I have never experienced the black bars before. I know nothing about how signals are broadcast from cable providers, but the only thing I can think of is that Comcast has changed how they broadcast the signal now to revert to the channel provider's broadcast signal.

Thank you for your help and providing any further assistance.

Forgive me for yet another reply. The TCM example was not a good example nor the one I should have given because it's an HD channel. Since no longer having TCM, I had resorted to watching the black and white movies on the Movies channel, which is not in HD, and it was full screen mode on my old equipment. I also recorded the black and white movies from the Movies channel on my old DVR box, and they were in full screen mode.

Thanks so much for taking the time to reach out to us regarding your video picture issues. I very much appreciate your patience and greatly apologize for the delay in our response. I know how important the services are to your home and we want to do all that we can to assist. I rely on my services at home and I know how frustrating I would find bars running across my screen. I would love to get to the bottom of this picture issue. Can you please reach out through private message with your first and last name, name on the account if different, service address and account number? If you’re having trouble locating this information, you can also reference our world-class MyAccount app to view all of your account details by the simple touch of your fingertips! Please follow the process here to learn how to obtain that information: comca.st/30x1qW2. 

You can do it here by clicking on their name in the response. It goes to their profile then click send message. 

You requested I send you a private message, but when I looked on the Xfinity app, I don't know where I need to go to send a private message to you. Could you please tell me how to go about sending a private message to you?

Thanks!

Thank you so much. I'm new the forum, so I wasn't aware of how simple it was to do a private reply.

Does anyone have the answer or have recieved an answer from comcast as to why this is happening with the lower picture quality and horizontal lines because the service costs too much already.