Brendan
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brendonovich.dev
Brendan
@brendonovich.dev
290 followers 11 following 65 posts
@cap.so founding engineer

streams sometimes at twitch.tv/brendonovich

@macrograph.app is cool check it out

github.com/Brendonovich
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brendonovich.dev
i updated the @cap.so docker image a few days ago on @github.com and... i think someone's been downloading it in a loop?
the download count has been increasing by like 2/second for the past few days 😅
A screenshot of the cap-web docker image page on github. The latest version is shown to be published 3 days ago and has over 200,000 downloads - I swear they're not from us!
June 12, 2025 at 4:59 AM
brendonovich.dev
multiplayer @macrograph.app was a mistake
A bunch of MacroGraph nodes without any IO arranged to spell out "SUS CUM", "POOP", "NUT", and an Among Us character
June 1, 2025 at 4:51 AM
brendonovich.dev
turns out you can just work from the New York library
Close up of my MacBook screen with Zed open working on De-vinxi-ing Solid Start, with the table and wall of one of the New York library’s rooms out of focus in the background
May 1, 2025 at 4:26 PM
brendonovich.dev
@cap.so is getting a whole suite of improvements over the next few days
- redesigned editor
- new 'start recording' flow
- system audio capture

then focusing on bug fixes & ux improvements for the next couple of weeks to make the app super smooth
A screenshot of Cap's new editor
March 20, 2025 at 7:14 PM
brendonovich.dev
the manual zoom picker in @cap.so will now preview the zoom segment's first frame
much better than a big blue rectangle 😄
February 22, 2025 at 4:12 AM
brendonovich.dev
average conversation with @ryansolid.bsky.social
Screenshot of a message I sent in a conversation with Ryan Carniato, where he was explaining some of Solid 2.0's new APIs (latest and isPending). The message says 'this is next level neuron activity going on here'.
February 21, 2025 at 6:05 PM
brendonovich.dev
if @ryansolid.bsky.social made music
A screenshot of ellis's 'signals' (2024) EP on Spotify
February 19, 2025 at 11:20 AM
brendonovich.dev
hell yeah
Once the GitHub workflow has started and created a draft release, it updates the message from CapBot to say '{version} workflow running, go edit the release notes!', with a link to the draft release and to the specific workflow run.
February 18, 2025 at 10:50 AM
brendonovich.dev
i got tired of clicking 'run workflow' on github
I've created a basic Discord bot that has a /release slash command, which presses 'Run Workflow' in GitHub for us. This screenshot shows CapBot responding to me invoking /release, saying 'Release workflow started' and with a button that links to the GitHub workflow runs page.
February 18, 2025 at 8:56 AM
brendonovich.dev
been working on my own version of the 'fail' crate for @cap.so that allows fail points to be toggled in real-time.
all declared 'fail' (panic) and 'fail_err' (Err return) points are collected by the 'inventory' crate, and a global map that our debug window can modify toggles them on and off.
A screenshot with some code on top, Cap's debug window with a list of fail points on the left, and the main window on the right. The code demonstrates the 'fail' macro, for declaring fail points that should panic, and 'fail_err', which are points that should return an Err containing some value.
February 15, 2025 at 6:27 PM
brendonovich.dev
also osu! lazer's ui is insanely clean and the animations are so smooth 😄
A screenshot of osu! lazer's song select UI
February 2, 2025 at 6:10 AM
brendonovich.dev
I'm happy to announce I'm officially joining cap.so as Founding Engineer!
After helping with the new recorder + editor for a while, I'm excited to be a part of building the open source screen recording suite our users have been asking for.
A screenshot of Cap's recorder and editor windows on a default macOS background
January 29, 2025 at 6:25 PM
brendonovich.dev
coming soon: cap.so for windows
Cap running on Windows. The recording, settings, and editor windows are all visible.
January 26, 2025 at 10:44 AM
brendonovich.dev
i should check on @vercel.com more often
A screenshot of my vercel.com dashboard with numerous alerts saying 'macrograph.app is missing a payment source'. I really ought to turn on email alerts 🤦
January 24, 2025 at 12:32 PM
brendonovich.dev
built a new video decoder for cap.so that uses native macOS APIs and omg it's so much faster
January 22, 2025 at 9:55 AM
brendonovich.dev
cap.so performs all video rendering in Rust, but uses a web frontend via @tauri.app. how does the frontend receive frames from the backend?

WebSockets!

we've found local WebSockets can handle >500mb/s of throughput, allowing us to display 1080p@60fps video on a !
An Excalidraw diagram titled 'Sending frames from Rust to webviews. There are two boxes, one on the left that says 'Rust Backend. Axum Server. Sends frame data + width/height', and one on the right that says 'Web Frontend. <canvas>. drawn with putImageData'. There is an arrow pointing from 'Axum Server' to '<canvas>' labelled 'RGBA frames via WebSocket.
January 14, 2025 at 6:49 AM
brendonovich.dev
sometimes you just gotta do it to em
GitHub PR line diff counter displaying +35,242 and -13
December 28, 2024 at 4:01 AM
brendonovich.dev
super happy with this new stream layout!
macos's portrait blur + studio lighting make my camera look way better than it is 😄
i'm gonna be streaming 2-3 times a week from now on, working on cap.so and macrograph.app over at twitch.tv/brendonovich, come say hi!
Screenshot of a moment of my Twitch stream. My display, with the cap.so editor open, takes up most of the screen, with chat to the right and my webcam in the bottom right, slightly overlapping with the display. The gap underneath the display contains Discord StreamKit elements: A link to the Cap discord and the people in a voice chat with me - just me and Richie. There's padding between most of the elements, and around the edges, where moving white dots with lines connecting them on a blue background can be seen.
December 17, 2024 at 5:06 PM
brendonovich.dev
Infrastructure as Code but it's for OBS scenes/sources/filters

built an initial version of this years ago but wanted to try a different approach today

repo if you're curious: github.com/Brendonovich/sceneify
TypeScript code defining an OBS scene named Main with a camera item that uses the webcam input defined in the next image, and a main function that creates the scene and updates the transform of the camera item. The full code is the following: export const mainScene = defineScene({ name: "Main", items: { camera: { input: webcam, alignment: "bottom-right", positionX: 1920 - GAP, positionY: 1080 - GAP, }, }, }); async function main() { const obs = new OBS(); const scene = await createScene(obs, mainScene); await scene.item("camera").setTransform({ positionX: 100, positionY: 1000, }); } TypeScript code defining a 'video capture source' input type, 'streamfx blur' filter type, and the webcam input mentioned in the previous image. The webcam input uses the 'video capture source' input, and contains a blur filter. The full code is the following: export const videoCaptureSource = defineInputType( "av_capture_input_v2" ).settings<{ device: string; device_name: string }>(); export const streamfxBlurFilter = defineFilterType( "streamfx-filter-blur" ).settings<{ "Filter.Blur.Type": string; "Filter.Blur.Size": number; }>(); export const webcam = videoCaptureSource.defineInput({ name: "Webcam", filters: { blur: streamfxBlurFilter.defineFilter({ name: "Blur", settings: { "Filter.Blur.Type": "box", "Filter.Blur.Size": 30, }, }), }, });
November 25, 2024 at 2:35 PM
brendonovich.dev
next cap.so version's dmg will have a background, yay
A macOS dmg installer with the Cap app on the left and Applications text on the right, an arrow pointing from left to right, and text underneath that says 'Drag and Drop Cap to the Applications folder'.
November 14, 2024 at 5:49 PM
brendonovich.dev
pretty happy with this mic level indication i've made for cap.so, should be super helpful for distinguishing microphone issues from recording/encoding issues
November 14, 2024 at 7:09 AM
brendonovich.dev
@syntax.fm woah, thankyou!
Screenshot of GitHub feed entry that reads: 'syntaxfm sponsored you - 2 hours ago'
November 11, 2024 at 2:35 PM
brendonovich.dev
domain as handle is very cool, wow
November 1, 2024 at 8:45 AM