Rafael Caricio

AI users are working longer because, for the first time, our tools can finally keep pace with our imagination. When output is cheap, your greatest leverage isn't how much you build, but the taste to know what is worth building - and the rest required to see the difference.

ICYMI there's a new v0.4.0 of GstPipelineStudio, with a refreshed user interface with a new logo, modernized dialogs, graph zoom support, recent files menu, and improved cross-platform builds with GStreamer 1.26 and GTK 4.16. More details here dabrain34.pages.freedesktop.org/GstPipelineS...

JustHTML by @EmilStenstrom is a new Python library (no dependencies) that parses HTML according to the HTML5 specification and passes the 9,200 test html5lib-tests suite It's 3,000 lines of code mostly written by coding agents over a couple of months https://simonwillison.net/2025/Dec/14/justhtml/

Excited to share my new YouTube series on Software Engineering Effectiveness! www.youtube.com/watch?v=lqcK...

I put together a detailed collection of useful patterns I've collected after vibe-coding 150 different single-file HTML tools over the past couple of years https://simonwillison.net/2025/Dec/10/html-tools/

Check out my new blog post, I have implemented a bare-bones GStreamer-like library in Python from scratch to show how some of the GStreamer abstractions work underneath. The idea it to help you create a mental model to work with the real framework. caricio.com/learn-by-exa...

Interesting, I still find GPT-5 to be better than Sonnet 4.5! 👀

One of the new skills required to get the most out of AI-assisted coding tools - Claude Code, Codex CLI, etc - is designing agentic loops: carefully selecting tools to run in a loop to achieve a specified goal. Do this well and you can solve many coding problems with brute force Here's my […]

GStreamer Conference 2025 details now confirmed! Join us on Thursday and Friday 23-24 October 2025 in London, UK. The conference will be followed by a 2-3 day hackfest. After that it's FOMS and @demuxed.com 2025. Hope to see you all in London! #gstreamer #opensource #multimedia #audio #video

Now we I look at some old projects, unmaintained, and I want to check it out. I look at bit in the code to understand it. Then I run Claude Code on it and say "make this compile and run, fix all compilation errors". It is magical. eg.: github.com/rafaelcarici...

Inverse kinematics working! 🙌 #robot #spotmicro

📢 New GStreamer 1.26.4 bug-fix release for our stable 1.26 series! Includes bug fixes, playback fixes, stability improvements, memory leak fixes, and performance improvements. Details at gstreamer.freedesktop.org/releases/1.2... Packages for Windows, Android, macOS and iOS will follow soon.

I heard StackOverflow is “dying”. But something like StackOverflow will still need to exist in the future. Maybe not in its current form, but in my opinion, some hard factual solutions directory still have a place in a world of coding dominated by LLMs.

Making MacOS apps is not simple. Xcode is not a user-friendly platform. eg. So many hidden menu items and heavily point and click.

I'm trying to get into the habit of producing more video, so on the spur of the moment I made a 7 minute video showing how I used Claude Code to put together a simple GitHub Actions workflow https://www.youtube.com/watch?v=VC6dmPcin2E

Restarted my server after a update. Not coming back… now I will have to spend a few hours restoring from backup

📢 New GStreamer 1.24.13 bug-fix release for our old-stable 1.24 series! Includes bug fixes, security fixes, stability improvements, memory leak fixes, and performance improvements. Details at gstreamer.freedesktop.org/releases/1.2... Packages for Windows, Android, macOS and iOS will follow soon.

OpenHands (formerly OpenDevin) released a coding CLI. " - Has top accuracy (similar to Claude Code) - Is completely open source, MIT licensed - Is model agnostic, use an API or bring your own - Is simple to install and run `pip install openhands-ai` and `openhands` (no Docker!) "

The WWDC announcements I'm most excited about are the new Foundation Models framework (for accessing Apple's on-device LLMs) and the Containerization framework for running Docker-style containers without hosting them all in a Linux VM - here's links to relevant docs for both of those […]

I built a new LLM plugin that can turn a PDF into an image-per-page for feeding into vision models, and in testing it found that GPT-4.1 mini hallucinates WILDLY if you feed it a blank white rectangle followed by a blank black rectangle https://simonwillison.net/2025/May/18/llm-pdf-to-images/

I just uploaded my slides for the talk I gave at Kamailio World 2025. I introduced RTP over #QUIC ( #ROQ ) and my new #imquic library, with a few observations on what future this may have, if any (especially considering most of the focus is on #MoQ instead) www.slideshare.net/slideshow/rt...

Today, we’re announcing the preview release of ty, an extremely fast type checker and language server for Python, written in Rust. In early testing, it's 10x, 50x, even 100x faster than existing type checkers. (We've seen >600x speed-ups over Mypy in some real-world projects.)

1st demo of XPeng's IRON robot at Shanghai Auto Show today. Skinnier compared to American counterpart Optimus 🦴 Credit: Shanghai Eye youtube.com/@ShanghaiEye...

Fun new LLM fragments plugin: llm-fragments-symbex can scan a directory full of Python code and extract the class, function and method signatures and their docstrings to feed into the context of an LLM prompt. It's adapted from my older Symbex project […]

My llm-fragments-github plugin has a new feature that lets you import the markdown for an issue thread using -f issue:org/repo/number - so now you can feed it the repo contents with -f github:simonw/llm and an issue and tell it to "muse on this issue […] [Original post on fedi.simonwillison.net]

Feeling grateful today! Found an old spreadsheet where I'd listed companies that seemed impossible to reach. Seeing Netflix on that list is a humbling reminder of how fortunate I've been. ✨

If you're joining us for the hackfest in Nice next month, please add yourself to the list on the hackfest page in hedgedoc: notes.gstreamer.org/5w3cO5EDTXCT... We hope to see you there!

Anthropic provides users with a best practices guide for Claude Code. Claude Code is a low-level tool without specific workflow restrictions, allowing users to directly access the Claude model. www.anthropic.com/engineering/...

I have tried Codename Goose and it is pretty cool. Especially that it doesn’t need IDE. Just make sure to commit your own changes before prompting it. www.anthropic.com/customers/bl...

Vibes 🤣🤣🤣 youtu.be/JeNS1ZNHQs8

I vibe coded up a little web tool for pretty-printing incomplete JSON, using GPT4.5 for the initial version and then Claude 3.7 Sonnet Thinking to fix some bugs and improve the visual appearance Tool is here […] [Original post on fedi.simonwillison.net]

Just produced a small utility tool that I wanted to build for a very long time. This will help me analyze large GStreamer logs. gstreamerlogs.caricio.com

If you want your own lovable bipedal robot, Open Duck Mini is the project for you. With CAD designs, runtime code, build guides, and a bill of materials (BOM), these resources will help you design, build, and operate your Open Duck Mini robot.

At Mainmatter we're looking for Rust contractors to augment our internal consulting team. Two different profiles: - Rust, with a background in production C/C++ - Rust on the backend The rate is 500-800 euros/day. Remote, but you *must* be in a European timezone. More details ↓

iMessage is horrible in slow networks. WhatsApp can handle it much better

Cline (VSCode plugin) made my stop using @jetbrains.com completely in my personal projects. I hope they catch up or I will have no reason to renew my personal license.

Just realized that this year I complete 20 years that I started writing code. I still enjoy writing code and learning new things, that’s a nice surprise.

You know, it seems that whenever anyone resigns from Linux kernel work in total frustration, and cites a few of the things that were the final straws, it's always the same person whose caustic manner is at the root -- and it isn't Linus. marcan.st/2025/02/resi...

I have watched Time of Eve (イヴの時間, Ivu no Jikan) with my wife. I am not an anime person, but this one seems timely.

📢 GStreamer 1.25.50 is out! This is another unstable development release / snapshot on the road to the upcoming 1.26 stable release and is aimed primarily at developers and early adopters. Give it a spin and let us know how it goes! Binary packages will follow shortly.

Is there an alternative to the bitvec crate? It's great, but it's a bit unmaintained (for good reasons, no shame on the author) which is causing some problems. I need BE and LE loading and storing of various integer types for a u8 array or slice. Ideally it'd also support LSB0 and MSB0 config.