Request for more settings in the Legacy AV Adapter (updated October 10, 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.
Note: Added in firmware 0.80

2) Letting CTI be toggled on and off as there are some cases where CTI may be undesirable.
Note: Added in firmware 0.80

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.
Note: Added in firmware 0.80

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.
Note: Added in firmware 0.80

• This topic was modified 2 months ago by Zacabeb. Reason: More thoughts added
• This topic was modified 2 months ago by Zacabeb. Reason: Yet more thoughts added. This one might end up a book!
• This topic was modified 1 month, 3 weeks ago by Zacabeb. Reason: Added one more suggestion
• This topic was modified 1 month, 2 weeks ago by Zacabeb. Reason: Added requests for adjustable audio gain for RF input and luma/chroma gain type selection
• This topic was modified 1 month ago by Zacabeb. Reason: Added notes for features now implemented

[Zacabeb]

8) Ability when tuning manually to toggle between setting the frequency and setting the channel.

[Author]

Posts