Strange Shimmering When Recording With OSSC

[avrona]

I was trying to record some footage from my PS2 via an OSSC and Elgato 4K 60 S+, however while the output itself looks fine on the display, in the OBS preview and output file itself there is this will shimmering going on throughout. What could be causing it and how can I fix it for cleaner footage? Are there any other settings I should also tweak to get even better output?

Here’s some of my test footage: https://youtu.be/YHxA0MKjDO8

[BuckoA51]

That looks like regular bob deinterlacing to me, do you have your OSSC set to pass through or bob deinterlace mode?

[avrona]

That’s under output and 480/576i right? Right now it was set to 2x bob, however when I set it to passthrough, it looked even worse on OBS.

• This reply was modified 2 years, 10 months ago by avrona.

[Zacabeb]

It looks like frame rate conversion has been applied, interacting with the artifacts of the bob de-interlacing. Is the signal from the PS2 576i50?

[avrona]

Yeah, had OBS set to 30FPS, so setting it to 50 did help a lot, so thanks for that. It’s still a bit visible though, so is there anything else that can be done? Here’s a newer sample with the framerate issue fixed: https://youtu.be/ZI6z9k4Q3XY

 

[BuckoA51]

You may be able to force certain titles to run in progressive scan mode by using homebrew software, otherwise you will need a different capture card or scaler with a more sophisticated deinterlacer, such as RetroTINK 5

[marqs]

Framerate-converting bob-deinterlaced material does indeed cause nasty artifacts like that when frames are dropped/repeated. Even if you managed to synchronously capture each input frame (which doesn’t seem to be the case in either of the linked videos), playing the video back on PC will eventually drop/repeat frames (rather often when you record 50Hz material as many desktop monitors still are 60Hz). At least I’d set the game in 60Hz mode (many PAL PS2 games should support that)  for several reasons, not just capture related.

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