Request for more settings in the Legacy AV Adapter (updated October 1, 2025)

[Zacabeb]

There are a few settings I think would be useful to control in the Legacy AV Adapter which are not currently exposed.

1) Adjustable saturation. While the ADV7280 should recover correct saturation with a robust input, there are still cases where it might be useful to raise or lower the saturation.

2) Letting CTI be toggled on and off as there are some cases where CTI may be undesirable.

3) Having separate Y and C shaping filter settings for S-video and CVBS/RF. While optimal shaping filter settings can of course be stored in different profiles, it would still be helpful at times being able to optimize CVBS and S-video settings independently in the same profile.

4) A handful of presets combining relevant settings, as several of the settings are interdependent and only produce optimal results in certain combinations. While the OSSC Pro already requires a fair bit of understanding of video signals to make full use of it, the settings for the Legacy AV Adapter require quite a deep understanding of how the analog color systems work.

For instance, if the user wants to use notch filtering with CVBS input for a softer picture and avoid cross-luminance along horizontal edges, it currently takes adjusting several of the parameters (turning the comb filters off, selecting one of the Y shaping filter that has a trap at the right frequency, and altering the comb filter strength and number of taps to fully defeat the comb filter.)

An example of profiles that could be of use:

Standard – Standard comb filtering settings
Game 1 (Comb) – Comb filtering tweaked to reduce cross-luminance along horizontal edges with graphics (especially useful with PAL signals)
Game 2 (Notch Sharp) – Pure notch filtering, narrow
Game 3 (Notch Smooth) – Pure notch filtering, wide
Game 4 (Artifact color) – Optimized for NTSC artifact color decoding

5) The ability to type in a frequency in the tuner using the number keys on the remote (this would of course be useful across the OSSC Pro UI.)

6) If available in the SI2177’s SIF/AF, adjustable audio gain for RF input. Alternatively, a post-ADC gain setting.

7) Ability to switch between fixed, sync-derived, and peak-white luma gain, as well as between luma-based, burst-derived, and manual chroma gain, to better handle imperfect sources.

• This topic was modified 3 weeks, 4 days ago by Zacabeb. Reason: More thoughts added
• This topic was modified 3 weeks, 1 day ago by Zacabeb. Reason: Yet more thoughts added. This one might end up a book!
• This topic was modified 2 weeks, 5 days ago by Zacabeb. Reason: Added one more suggestion
• This topic was modified 1 week, 1 day ago by Zacabeb. Reason: Added requests for adjustable audio gain for RF input and luma/chroma gain type selection

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