Jump to content

Compression on HD TV


Recommended Posts

I've had Time Warner HD cable TV for about nine months. I'm watching on a Panasonic 46" Plasma screen. The quality has been great, often telecine quality. Now how ever I am starting to see more and more compression issues. A forest becomes blocked up digital camo. Blue Sky broken down into severe banding. What is happening. I am talking about big budget series like "Hawaii Five-O". I feel like the networks are transmitting HD but are starting to use some pretty strong compression to save money.

Link to post
Share on other sites

I am talking about big budget series like "Hawaii Five-O".

 

That's one of our shows, I work for CBS TV Studios. Are you watching off air, or via telco, cable or satellite? If it's telco, cable or satellite, are you using the analog outputs from the box, or the HDMI? (Some boxes have issues with the analog feed.)

 

CBS uses the full 19.39 Mbits/sec capacity of their ATSC channels for a single stream of HD, and they have requirements in the retrans agreements to make the cable and satellite services pass the full 19.39. They really do care about getting it right on the air.

 

 

 

-- J.S.

Link to post
Share on other sites

I wonder if there's any chance it's being recompressed somewhere? It could still then be full bitrate, but look bad.

 

But really, like our Canon camera user in another post today, we need to see it to diagnose the cause.

 

This is MPEG-2, yes?

 

 

P

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...