[vess]

Hi marqs,

I’m using OSSC Pro (fw 0.82) with 480i sources in scaler mode at ×2 Hz (120 Hz output). I noticed that your implementation of BFI for interlaced sources does not produce visible flicker, even though BFI is active. I’d like to ask a few clarifications:

How is BFI implemented for 480i @ ×2 Hz internally?
Specifically:

After how many source frames do you insert the black frame?
Is it 1 frame on / 1 frame black, or a different cadence for interlaced?

When I enable BFI, the image does not look darker at all.
On my display (LCD/OLED), typical BFI clearly reduces brightness, but here it’s almost unnoticeable.

Is this expected with your interlaced BFI logic?
Could it be because BFI is applied only to certain fields or blended in a way that reduces flicker without heavy dimming?

How can I verify that BFI is actually active?
Are there any telltale signs (e.g., flicker pattern, motion clarity, brightness behavior, or an internal counter/LED indicator) I can use to confirm BFI is working as intended?

[vess]

Thank you so much for the quick response and willingness to look into this—really appreciate your support!

To clarify the connection setup: I’m using a direct HDMI cable from the MiSTer’s HDMI port to the OSSC Pro’s HDMI input, with absolutely no adapters (HDMI-to-VGA, analog converters, or signal boosters) in the chain.

[vess]

yes,please give a guide ,how can i make a right setting basis on above.

[vess]

hello，marqs.after recevied your reply ,i double check with 0.75 firm ware.this time no proble,maybe  i have some mistake with my operation.

Regarding A-LM,the source is psp.in adaptive LM opt,i choose 480-512mode with psp 480 x 272 and 480p proc 2560×1440(line3x).may i get a flawless full screen picture with this setting？

[vess]

hello，marqs.after recevied your reply ,i double check with 0.75 firm ware.this time no proble,maybe  i have some mistake with my operation.

Regarding A-LM,the source is psp.in adaptive LM opt,i choose 480-512mode with psp 480 x 272 and 480p proc 2560×1440(line3x).may i get a flawless full screen picture with this setting？

[vess]

hello.psp scaler mode with 0.75 has graphics broken.and i have tested 0.74 no problem.

please check.

btw,i can not get a full screen picture with a-lm mode.there is always black border on the right and left of screen,meantime the bottom and top are sliced.need comments.

[vess]

yeah，setting the output opt -> adv. display timing” and set v.active to 1344 (=3*448) for the selected 1440p mode.

this is do useful and resovle my problem.

thanks marqs

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