Why motion blur on the st60


ok..my bad.  I think this might be judder due to 24p.

 

I am still in the process of understanding all this, but SHOULDN'T the best picture be with your BD player set to output 24p and the tv set on either 60 or 96hz?  However, on these settings I get MAJOR judder on blu ray playback.  When I turn OFF the 24p on the bd player, the 60HZ and the 3:2 pulldown is grayed out on the TV but the judder is gone.

 

Is this normal?  WHy do I get better motion with the 24p off?

 

Thanks,

DAve



Quote:
Originally Posted by davemsc  /t/1521701/why-motion-blur-on-the-st60#post_24459115


ok..my bad.  I think this might be judder due to 24p.


I am still in the process of understanding all this, but SHOULDN'T the best picture be with your BD player set to output 24p and the tv set on either 60 or 96hz?  However, on these settings I get MAJOR judder on blu ray playback.  When I turn OFF the 24p on the bd player, the 60HZ and the 3:2 pulldown is grayed out on the TV but the judder is gone.


Is this normal?  WHy do I get better motion with the 24p off?


Thanks,

DAve

Click to expand...

Yes you are seeing judder.

Some people are more susceptible than others.

For some 60 is more enjoyable.

And yes it better to do the conversion at the source.

I can live with the judder as I like the look of the unprocessed image-it has better depth and definition.


48fps/HFR is coming but I have yet to see anything that I thought was acceptable experience.

It has that soap opera look...

Motion judder is inherent to any content shot at 24 frames per second.

All movies are shot @ 24 fps.

The only exceptions for now are The Hobbit films in HFR/48 fps.

I'm not a fan of HFR or any oth the motion smoothing enhancements. I looks like early video tape to me.


For live tv it's certain that it arrives at your display at 1080i 60. What it's actually shot at could be several different formats.

At the display the signal gets up converted to the native resolution of the the display 1080p @ 60

This deinterlacing process is very effective. You can read more here http://en.wikipedia.org/wiki/Deinterlacing


So why do you see so much motion blur on cable?

There are many variables that could be contributing to this.

I'm assuming that the connection from the cable box is all via hdmi.

The first thing I would check is the cable receiver is actually outputting HD.

I know this sounds ridiculous but you would be surprised at how many friends and families think they are getting HD but are actually watching SD.

Make sure you are not double scaling. This can happen when you have a surround receiver between your sources and your display.

Many if not all new receivers have their own scaling and enhancement capabilities. Make sure these are all off and you are just passing the signal through to the display.

Next turn off all enhancements on the display.


After all this you still have significant motion blur on live sports it's something that your provider is doing or not doing.

Likely too much compression.

I have seen awful HD especially from Uverse and WOW.

Comcast is hit or miss depending on the area and the channel.


It's possible that by using some of the displays enhancements you can get to an image you find acceptable.

But there is only so much you can do with poor quality content.


The 2nd Edition of the Spears & Munsil BD has great patterns for testing judder.
http://www.spearsandmunsil.com/portfolio/pattern-help-text/