iiinova — where your digital self keeps evolving

I think I need to start doing "Mediabunny days"; full days where I work on nothing but grinding down Mediabunny issues and PRs, and working on new features at the end of it. I think this will be more efficient for me than sprinkling in Mediabunny issue work throughout every day

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Vanilagy @vanilagy.bsky.social · 13h

Safari 27.0.0 and 27.0.1 unfortunately have a pretty disastrous bug in VideoEncoder, rendering it (almost) useless for video encoding tasks unless you're really really patient This has thankfully already been fixed, I hope the fix rolls out quickly

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Vanilagy @vanilagy.bsky.social · 03/10/2026

That list of CVEs is finite tho

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Vanilagy @vanilagy.bsky.social · 02/10/2026

Sometimes I share interesting things on X that I can't share here because here I'm limited to 300-character posts

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Vanilagy @vanilagy.bsky.social · 02/10/2026

Responsive design endboss Love it

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Vanilagy @vanilagy.bsky.social · 30/09/2026

You're allowed to look at stars but just not that one!!

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Vanilagy @vanilagy.bsky.social · 29/09/2026

Holy shit it's going to be amazing

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Vanilagy @vanilagy.bsky.social · 29/09/2026

Mediabunny v1.61.0 now supports HLS playlists with variable substitution! 🚀 This is a powerful feature where variables can be defined inline or via query parameters, and then substituted in URLs. An example:

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Vanilagy @vanilagy.bsky.social · 28/09/2026

Just found out that Mediabunny's extension packages have been broken on Deno for many many months, and nobody noticed! I suppose the Mediabunny + server-side + Deno combination must be quite rare 🙃

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Vanilagy @vanilagy.bsky.social · 21/09/2026

The life of a media demuxer developer: needing to make your perfectly spec-compliant and correct parser less strict because lots of invalid inputs are being produced in the wild and still accepted by other (lesser) parsers 😫

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Vanilagy @vanilagy.bsky.social · 20/09/2026

Very cool man! I love seeing PWAs still being made, very underrated technology imo. If I ever made a tool like this, I'd also PWA the crap out of it 😂

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Vanilagy @vanilagy.bsky.social · 17/09/2026

"Hungary-linked AT Proto-er"

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Vanilagy @vanilagy.bsky.social · 17/09/2026

This is a WASM based library! It's just not supposed to feel like one, it's supposed to feel like JS

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Vanilagy @vanilagy.bsky.social · 17/09/2026

I'm reaching speedups of 15x compared to pure JS for some operations. I hear excuses all the time that SIMD isn't worth it, that the conversion roundtrip nullifies the gain, etc. This is pure cope. SIMD reliably gives me a 4x speed boost MINIMUM every time I use it, it's so good

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Vanilagy @vanilagy.bsky.social · 17/09/2026

The way it works under the hood is super super cool and novel. Will share more when it's done ^^

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Vanilagy @vanilagy.bsky.social · 17/09/2026

I'm back. Library is almost complete and it's fucking glorious. The API is dead simple, just TypedArrays with SIMD operations. The code in the screenshot runs 6x faster than the scalar JS version. It has over 700 SIMD operations; they typically run at 5x-10x JavaScript speed

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Vanilagy @vanilagy.bsky.social · 17/09/2026

The fact that I have literally no idea what any of them do 😂😂😂 Need me some kurtosis

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Vanilagy @vanilagy.bsky.social · 17/09/2026

Don't be a larper; be a lerper

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Vanilagy @vanilagy.bsky.social · 16/09/2026

VLC unfortunately fails spectacularly at this task, lol

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Vanilagy @vanilagy.bsky.social · 16/09/2026

Mediabunny v1.57.0 adds a TON of new features, among which is flipped video support! 🚀 Some videos in the wild are flipped horizontally via metadata in the file, and Mediabunny now fully supports reading, writing, encoding and decoding such files across both MP4 and WebM!

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Vanilagy @vanilagy.bsky.social · 16/09/2026

The upcoming version of Mediabunny will automatically write the "btrt" (bitrate) boxes into MP4 files. This gives players and tools a better understanding of the media's data rate. The coolest thing is that this added exactly zero new API! Mediabunny determines it for you.

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Vanilagy @vanilagy.bsky.social · 16/09/2026

Before agents, most of the issues I got looked like that. Without this, OSS development feels much more lonely: you make software for other people and you mostly hear back from machines.

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Vanilagy @vanilagy.bsky.social · 16/09/2026

This is the new reality so I'll get used to it, but I personally find it hard to understand why it is like this. I know for myself that I would write the descriptions by hand because I want to communicate with the maintainers on a more personal level and let them know that I appreciate their work.

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Vanilagy @vanilagy.bsky.social · 16/09/2026

I would expect that most devs switch over to using AI to code (I use it too!), but then file the issue/PR themselves with a "Hi, this is what I tried to do, this didn't work, this is the fix". But no, about 90% of the issues I get on Mediabunny these days are fully AI written.

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Vanilagy @vanilagy.bsky.social · 16/09/2026

What surprises (and saddens) me the most about the new reality of agentic software engineering is how a majority of issue and PR descriptions are fully AI-written.

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Reposted by Vanilagy

CreaTools @creatools.bsky.social · 15/09/2026

one of the recent additions to creatools is the video trimmer. powered by @vanilagy.bsky.social's #mediabunny, the export is lightning fast and even let's you export your own custom gifs in no time. give it a shot at: crea.tools/video-trimmer #creatools

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Vanilagy @vanilagy.bsky.social · 15/09/2026

Can't believe there's still no SIMD library for JavaScript I'll be back

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Vanilagy @vanilagy.bsky.social · 15/09/2026

That song actually pisses me off but the rest of the album is great 😂😂

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Vanilagy @vanilagy.bsky.social · 14/09/2026

Here's your reminder that Mediabunny is able to read & write metadata tags from and to basically every format! Includes every tag you could possibly want, including cover art. So, no need to use another library for this!

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Vanilagy @vanilagy.bsky.social · 12/09/2026

23 kB for a validation library does seem a little big to me. I suppose it has a lot of features and none of them are treeshook?

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Vanilagy @vanilagy.bsky.social · 12/09/2026

When it's released 👀 I'll share more tho!

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Vanilagy @vanilagy.bsky.social · 11/09/2026

The thing running looks like this:

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Vanilagy @vanilagy.bsky.social · 11/09/2026

After seeing what's possible with Zig in WASM, I was tired of not having the same possibilities in JavaScript!

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Vanilagy @vanilagy.bsky.social · 11/09/2026

I'm working on a new library that enables real shared-memory multithreading for JavaScript, natively. Here, the main thread and a worker cooperatively increment a counter. The state object is truly shared between the two threads; no messages are ever exchanged after the initial handshake.

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Vanilagy @vanilagy.bsky.social · 11/09/2026

JavaScript natively supports shared-memory multithreading

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Vanilagy @vanilagy.bsky.social · 10/09/2026

Cursed JS of the day: you can array push to objects

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Vanilagy @vanilagy.bsky.social · 10/09/2026

Closing in on 30 reported Chromium bugs 🫠 When will Alphabet give me stock for this?

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Vanilagy @vanilagy.bsky.social · 09/09/2026

I always report these bugs to the browser vendors too, of course!

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Vanilagy @vanilagy.bsky.social · 09/09/2026

Mediabunny goes great lengths to work around any and all WebCodecs bugs it encounters. Here's some new logic that works around an FFmpeg H.264 decoder bug by hacking around in the SPS bitstream. You can hit this in Chromium with the software decoding path forced.

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Vanilagy @vanilagy.bsky.social · 08/09/2026

Media copying can preserve timestamps exactly, regardless of video key frame alignment. When a simple media copy isn't possible, you can configure Mediabunny to be less strict to still make it happen. For more, check out the relevant section in the docs: mediabunny.dev/guide/conver...

mediabunny.dev

Converting media files | Mediabunny

Efficiently convert any media file to any format, directly in the browser. Optionally apply trimming, video resizing, rotation, custom overlays, and more.

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Vanilagy @vanilagy.bsky.social · 08/09/2026

Mediabunny v1.56.0 is out! 🎉 It ships with huge improvements to the Conversion API, enabling near-instant media trimming via new media copying logic. Here's Mediabunny trimming a video to [60s, 120s], with no loss in quality:

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Vanilagy @vanilagy.bsky.social · 07/09/2026

Update dropping tomorrow 👀 The performance is nuts, it extracts a 60-second clip from Big Buck Bunny in 50 milliseconds. So, for all intents and purposes, it is instant trimming

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Vanilagy @vanilagy.bsky.social · 04/09/2026

A huge improvement to media conversion is coming in the next Mediabunny version 👀 It will allow you to trim/clip any section of media WITHOUT transcoding. This means media trimming will be practically instant, and with zero loss of quality.

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Vanilagy @vanilagy.bsky.social · 04/09/2026

I'm sorry, but VLC is just so buggy. Second bug I encounter today! The file I'm giving it is a Matroska file with negative SimpleBlock timestamp offsets. The spec is SUPER clear about this, it defines it as signed 16 bit. Seems VLC just doesn't care and reads it as unsigned!

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Vanilagy @vanilagy.bsky.social · 04/09/2026

This is pretty exotic for HLS, but negative timestamps in general are not. They're used to communicate audio encoder delay - the portion at the start of the audio where the decoder needs to warm up to converge to the full signal.

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Vanilagy @vanilagy.bsky.social · 04/09/2026

Next highly niche Mediabunny capability: HLS with negative timestamps

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