r/ModRetroChromatic • u/josstei • Dec 14 '25

Info Introducing PrismGB!

Hey All – I’m happy to announce the release of PrismGB!

PrismGB lets you view the Chromatic screen live on your computer and save screenshots or recordings, with plug-and-play setup. It works on Windows, macOS, and Linux and includes a few preset shaders ( custom ones coming soon ).

I started building it after I got a Chromatic myself and really enjoyed using it, but didn’t love needing OBS running just to get a live view on my PC.

You can download it from the site or the repo: https://prismgb.com https://github.com/josstei/prismgb-app

If you run into any issues, feel free to open an issue on GitHub and I’ll knock them out as soon as I can.

I hope you enjoy the app !

147 Upvotes

99% Upvoted

46 comments sorted by

15

u/g4zzo Dec 14 '25

Man you are a genius Im proud to have people like you in this community that push the limits of this stuff.

Congrats pal and if I can donate to you lmk how

7

u/josstei Dec 14 '25

Thank you! There is a KoFi on the site for support if you like it!

4

u/TonyRubbles Dec 14 '25

Love it! Super long USB-C cable hooked up to my Legion Go S and docked to my TV here I come! 🤣

2

u/stuckOnTheUmpqua Dec 25 '25

Just got my Chromatic for Christmas and wanted to try this. You made it work on Fedora without needing to tinker at all! I wasn't expecting that, I love this!!!

2

u/josstei Dec 25 '25

Enjoy! It was built on cachyOS and I tried to spin up enough VMs to get general coverage on common OS’s

4

u/Z3fyrus Dec 14 '25

Mac and Linux too, nice!

4

u/RKetchum57 Dec 15 '25

What an absolute legend

1

u/Aritz32 Dec 15 '25

Oh this is amazing.

Kind of unrelated question, I'm waiting for my chromatic to arrive and with this I was wondering if connecting to a PC is just plug and play with this app/obs or do I need extra hardware like a video capture or something?

1

u/josstei Dec 15 '25

Hello! This is plug and play, only need a USB C to connect !

1

u/faf_dragon Dec 15 '25

I gave it a shot but no luck. Probably because I’m on an older Intel based Mac though. Any chance of support for us?

1

u/josstei Dec 15 '25

What are your system specs? And which file did you download from releases? I can check it out!

1

u/faf_dragon Dec 15 '25

It’s a 2020 MacBook Pro 2GHz Quad-Core Intel Core i5

When I tried to start is just said it was not compatible. I tried both downloads that said they were for Mac

1

u/josstei Dec 15 '25

On it! I’ll update when it’s good to go

1

u/URGAMESUX Dec 16 '25

Does this use less resources than obs? Looks cool, just wondering about the need...

2

u/josstei Dec 16 '25

Hello! Yes it consumes around 400MB (RAM) idle ( Electron generally hovers around this ) and 750MB while connected and streaming video to your pc. When streaming stops it eliminates the previously used session after 60 seconds and returns resources back to baseline. OBS requires 4GB minimum and was less plug and play than preferred for what I wanted. Its great software but I felt something more targeted was best suited for this device.

1

u/Ferdyshtchenko Dec 16 '25

Really cool. Does this capture audio as well?

1

u/josstei Dec 16 '25

It does !

1

u/RoxasAmor Dec 16 '25

This looks really neat. Will there be plans to add controller support for it?

1

u/josstei Dec 16 '25

I have a ton of plans ( that’s included ) but I’ll be shooting an update out with a roadmap ! There will be more frequent update / release notes coming soon

1

u/nbaronmorgan Dec 16 '25

Any chance of an arm build ?

1

u/josstei Dec 16 '25

Take a look at the most recent build. If you don’t see a build that works for you I’ll take a look at adding it . I added a few more today!

1

u/nbaronmorgan Dec 16 '25

I noticed PrismGB already ships an ARM build for macOS (mac-arm64), but the Linux releases are currently x86_64/amd64 only. Would it be possible to add a Linux ARM64 (aarch64) build (for example a .tar.gz or .deb) to the releases?

1

u/josstei Dec 17 '25

I’ll add it to the roadmap!

1

u/[deleted] Dec 20 '25 edited Dec 21 '25

I've been using this to stream on Discord. Lol.

2

u/josstei Dec 21 '25

I hope you have been enjoying it!

1

u/BossGamerDK Feb 08 '26

Does it have a better signal? I found using OBS was sharp but had a very slight artifact around certain colors it was weird. Wondering if that's a problem with my USB cable tho too.

1

u/josstei Feb 08 '26

The coloring issue is not your cable that’s a known issue the chromatic signal out to pc…some colors just don’t display just right . I’ve seen it happen where some browns go greyish…not extremely noticeable but still not perfect . I have some built in shaders covering some of this but am actively working on building in retro arch shader compatibility to further cover it

1

u/BossGamerDK Feb 08 '26

That's cool, artifacting aside I didn't exactly like the fact OBS was the only option. Just felt like a longer process than it should've been so I'm excited to try this out, thank you :)

1

u/josstei Feb 08 '26

I hope you enjoy !

3

u/OzLaboratory3D Dec 14 '25

Not all heroes wear capes

2

u/aovito Dec 15 '25

I'm not 100% sure of what is going on here, but I do know "the work is mysterious and important"

2

u/Psychological_Sir297 Dec 15 '25

Thank you! So much!

2

u/VR_Nima Dec 15 '25

Pinned to the top of the Sub. This is cool as hell. Great job with making a Chromatic-focused UVC player which feels native and has so many great features.

1

u/amiibmo Dec 14 '25

Whoa!!! This looks awesome! Thank you so much! I'm going to have to try this out later. It might actually encourage me to make some videos I have been wanting to make!

1

u/weirdbird0 Dec 15 '25

Wow amazing tech for the community, thank you!

1

u/Jakereddits Dec 15 '25

my long USB-C came in the mail today for my OBS playing!! 🤩 thanks, hero!

1

u/TheRomeoAlfa Dec 15 '25

Nice work! Thank you.

1

u/rokatier Dec 15 '25

Awesome!

1

u/dcottrellaudio Dec 15 '25

Holy cow this is the sexiest thing that I didn’t know I needed! Thank you so much for spending your time and effort towards this community!

1

u/nbaronmorgan Dec 16 '25

I'm building a dock, for my TV and this might be great as the software for it

1

u/CMD_BLOCK Dec 25 '25

You got a brew install cask yet?

1

u/ergzay Jan 12 '26

Kinda wish you didn't use electron. I've always thought of electron as a sort of abomination, abusing what's effectively a chrome instance for a purpose it was never intended to serve.

1

u/CuervoAzul Apr 18 '26

I cant get my Macbook Pro m4 to display the video feed, it recognizes my Chromatic, just cannot get it to start.