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Windows => Television => Topic started by: robt on August 10, 2017, 12:03:49 pm

Title: Motion artifacts on screen
Post by: robt on August 10, 2017, 12:03:49 pm
I'm seeing motion artifacts/lines on my tv when viewing mostly hdtv. It happens in MC22 and 23. Any lateral panning of the camera or sudden movement on screen causes smearing and short black lines to appear. Some programs are worse than others, sports are particularly bad due to the frequent movement.
I suspected my tv as going bad but if I use VLC instead of MC to play the stream, the artifacts are gone. I've tried playing with the video settings including ROS and ROHQ, and custom with most settings turned off.

Any suggestions?

This is a NUC6i3 to a Sony KDL32705B tv, signal supplied by an HDHomerun Prime (DVB-T2)
Title: Re: Motion artifacts on screen
Post by: RoderickGI on August 10, 2017, 05:23:40 pm
I was going to suggest it might be the Motion settings in your TV, but if the same recordings play well in VLC...

Hardware acceleration for video on/off?
Does it happen on Live TV and on recordings?

Post up your JRiver Benchmark results.
Title: Re: Motion artifacts on screen
Post by: robt on August 11, 2017, 12:33:51 am
I'm going to do some more experimenting tonight but in the meantime here are my Benchmark results

=== Running Benchmarks (please do not interrupt) ===

Running 'Math' benchmark...
    Single-threaded integer math... 6.935 seconds
    Single-threaded floating point math... 8.213 seconds
    Multi-threaded integer math... 3.406 seconds
    Multi-threaded mixed math... 2.316 seconds
Score: 910

Running 'Image' benchmark...
    Image creation / destruction... 0.432 seconds
    Flood filling... 0.320 seconds
    Direct copying... 0.560 seconds
    Small renders... 1.711 seconds
    Bilinear rendering... 2.079 seconds
    Bicubic rendering... 1.275 seconds
Score: 3449

Running 'Database' benchmark...
    Create database... 0.325 seconds
    Populate database... 1.853 seconds
    Save database... 0.552 seconds
    Reload database... 0.101 seconds
    Search database... 1.424 seconds
    Sort database... 1.480 seconds
    Group database... 0.911 seconds
Score: 3235

JRMark (version 23.0.30): 2532

Nuc6i3 with 12 gb ram and Win 10 64
Title: Re: Motion artifacts on screen
Post by: JimH on August 11, 2017, 06:24:01 am
That's a fair score, but not a good one.

With Red October Standard, I think you say it still is a problem.  Is that correct?
Title: Re: Motion artifacts on screen
Post by: robt on August 11, 2017, 12:24:11 pm
Ive just benchmarked again after a reboot and its gone up a bit

=== Running Benchmarks (please do not interrupt) ===

Running 'Math' benchmark...
    Single-threaded integer math... 6.650 seconds
    Single-threaded floating point math... 4.592 seconds
    Multi-threaded integer math... 3.486 seconds
    Multi-threaded mixed math... 2.474 seconds
Score: 1104

Running 'Image' benchmark...
    Image creation / destruction... 0.373 seconds
    Flood filling... 0.283 seconds
    Direct copying... 0.439 seconds
    Small renders... 1.722 seconds
    Bilinear rendering... 2.068 seconds
    Bicubic rendering... 1.253 seconds
Score: 3584

Running 'Database' benchmark...
    Create database... 0.274 seconds
    Populate database... 1.607 seconds
    Save database... 0.428 seconds
    Reload database... 0.106 seconds
    Search database... 1.390 seconds
    Sort database... 1.329 seconds
    Group database... 0.859 seconds
Score: 3588

JRMark (version 23.0.30): 2759

Yes, until recently RO Standard has been fine but ROHQ has all sorts of issues of screen stutter and breakup. Until the last few days, things have been fine so I dont know whats happened. But I do have a recording which shows chronic artifacts which I see when I play back on a different monitor. Not quite sure what to make of that.

So, as I'm considering another NUC for the lounge, do you recommend a bit more power? I thought the i3 would be sufficient but how far would I need to go to achieve ROHQ? Can any NUC manage that? Or is it a graphics chip issue?
Title: Re: Motion artifacts on screen
Post by: robt on August 13, 2017, 01:10:31 pm
Just to complete this thread for anyone reading, as stated elsewhere a reinstall and complete re scan of all tv channels has cured this issue.

It was a strange one, but the status quo has been restored.

Title: Re: Motion artifacts on screen
Post by: Yaobing on August 15, 2017, 10:31:24 am
Additional discussions are in a new split-off thread https://yabb.jriver.com/interact/index.php/topic,111819.0.html