How do I control User Media (environment facing camera) focus & zoom?

I am making a camera app where the full viewport is my phone's real life environment facing camera.

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My phone is a Pixel 8a which features a x8 zoom feature, but more importantly, it offers a x0.5 zoom feature with an impressive FOV⁰

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Problem is, I can't seem to set any value to access that zoom level, or more importantly, that improved FOV.

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I am also interested in manually changing the focus distance, or inputting touch taps to direct my camera what to focus on...

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I believe I am looking for a custom plugin, which I'm willing to pay a lil cash for. I found a free one called Ultimate Camera by Emi_Indo, but trouble is, I don't know how to install it...

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update: I have learned that this choice addon is for an older version so I am hoping to somehow convert to an older version or find one for r466

I may be able to use Ultimate Camera if I rebuild my app in r449 and then test it by uploading it through Cordova, but I saw in documentation that 0.5x zoom might not be obtainable this way because 0.5 is not an integer.

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I have tried connecting my GoPro Hero 5 via regular Bluetooth connection but it's not showing up as a camera source option.

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Has anyone made their phone offer a 3rd camera source by attaching a wired external webcam? I don't yet have the gear to test it myself.

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With a lot of elbow grease I can try to learn Bluetooth functions to deliver a live GoPro feed preview, or create my own custom addon.

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Here's to hoping a wired external webcam will show as source #3!! 🤞

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Soon I will demo this concept with items at BestBuy :)

I have plugged a cheap 720p USB webcam into an OTG adapter and plugged that into my phone's charging port. A different app like the popular "USB Camera" on the play store had no problem recognizing it.

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Construct 3s built-in object User-Media did not pick up on the 3rd source though.

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Maybe Emi-Indo's "WebRTC" addon was built to enable that specifically..

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I'll be back when I learn more 🫡

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Update: my app hit some major exciting milestones for me today so I will be putting this x0.5 zoom enhanced FOV on the back burner until a later day... It's the difference between 80⁰FOV and "unlocking" it's potential 120⁰FOV which is important to me. (Here's to hoping I can later use WebRTC to unlock an external 4k 180⁰FOV camera)

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but after unlocking total full screen recently and voice input, I'm excited now to find other upgrades like converting values into gauges and stuff, I'll come back to this someday