Connecting x box to tv but coming up with Invalid Format

I too am having this issue. When I first plugged my box into our LG tv it worked just fine. I am using a monster HDMI cord, we switch from plugging the computer and the Xbox. They had been working fine for a few months. Now when I plug in the box, it says
invalid format, which is coming from the tv its self, NOT the box. After plugging the cord into the computer, it works fine. Switch right back to the box, nothing. Iv tried wiggling the cord, nothing, changing the tv input, nothing.

Well the bravia has 3 ports the samsung 1 ive tried all 3 on sony and tried my sisters virgin media box as tht connects via hd and it works on the sony tv just wen i plug x box in it wnt come up its as if xbox isnt tlking to the tv if that makes sense

Fyi invalid format usually means a resolution problem

Resync your tv

Hi mtrboat,

Thank you for coming to the Xbox forums for assistance, I'd be happy to help.

The HDMI IN port on the Xbox One console is used to connect your cable or satellite TV box in order to view your TV channels directly from an app on the Xbox One console. It really isn't used for anything else besides that, so if you want to set up your
cable provider box that is where you would plug in the HDMI cable for the TV box.

Follow this guide for reference if you want to set up TV on an Xbox One X console:

Set up live TV with your Xbox One X, Xbox One S, or original Xbox One console

I hope this helps!

Hi there Jadekira86,

Thanks for reaching out here in Xbox Forums. I understand there is an issue with the Xbox Video resolution. I recommend trying a soft reset of the console this will help refresh the operating system and settings of the console. Check out this article:
Soft Factory Reset(while
keeping games and apps)

Before resetting your console make sure of the following:

• There is a stable network connection.
  
• The information for all profiles is known (email and passwords)
  
• If the console is not responding properly by providing the different menus. We are going to approach this differently.
  

Try this:

1. Power off your console, and then unplug the power cord to ensure that the console is completely powered off.
   
2. Wait 30 seconds, and then plug the power cord back in.
   
3. Press and hold the
   BINDbutton (located below the Xbox button on the console) and the
   EJECTbutton (located on the front of the console), and then press the
   Xboxbutton on the console.
   
4. Continue holding the
   BINDand
   EJECTbuttons for 10-15 seconds.
   
5. Listen for two “power-up” tones a couple of seconds apart. You can release the
   BINDand
   EJECTbuttons after the second power-up tone.
   
6. The console should power up and take you directly to the Xbox Startup Troubleshooter.
   
7. Select Reset this Xbox
   
8. Select Reset this Xbox and Keep Games and Apps
   

Give it a shot and let us know the results.