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dtf

3,230 karma · joined May 29, 2009

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dtf··on OpenDLSS: A Vulkan Reimplementation of Nvidia's DLSS 5 Neural Rendering Network
Seems quite similar to this repository?

https://github.com/aloshdenny/open-dlss

dtf··on Automattic has a new board after failed attempt to put CEO on leave
It's an 8-bit PNG of a magenta patch (with a dash of white), but the ICC profile is set to Rec.2020 PQ. So I think the high 255 values of 8-bit magenta/white will get mapped to very top of the PQ curve, which is like 10,000 nits (or whatever brightness your display can muster)
dtf··on NATS publishes preliminary report on technical incident of 8 September
Or maybe even just reviewing logic that is subject to pre-emption.

Maybe I'm being too harsh.. on the plus side the system has at least failed hard every time there's been a fault. Nobody has died. But it's been 3 times now in the past couple of years, and two of those times resulted in over 2000 flights cancelled and days of backlog, and misery for hundreds of thousands. It's really not acceptable.

dtf··on NATS publishes preliminary report on technical incident of 8 September
> 3. Had the higher-priority request arrived even one millisecond earlier or later, the update would have completed normally.

Well, that's comforting to know.

BBC: "Flight chaos caused by software defect in space of a millisecond, report says"

Sky: "'Millisecond' software error caused air traffic outage that grounded thousands of flights"

The Guardian: "Flight chaos for hundreds of thousands was caused in ‘millisecond’ by software error"

Sounds like pure bad luck.

dtf··on Flights cancelled at UK airports due to ATC issue
NATS - the same system that crashed in August 2023 [1] due to an id clash, causing 2000 flights to be cancelled and days of chaos.

[1] https://news.ycombinator.com/item?id=37461695

dtf··on DaVinci Resolve 21.1
I install, run and update via this container script [1] on Arch. It works very well.

[1] https://github.com/zelikos/davincibox

dtf··on Apple sues OpenAI, accuses ex-employees of stealing trade secrets
“Don’t over plan your life. Be open to the wonders and opportunities that present themselves,” Tan said.

[sharing reflections on his journey from MIT graduate to Apple executive to OpenAI Chief Hardware Officer as part of the Distinguished Speaker series hosted by the School of Engineering]

[https://thetech.com/2025/10/30/tang-tan-openai]

dtf··on Show HN: FFmpeg WebCLI – Full FFmpeg in Browser, Offline PWA, No Uploads(WASM)
I would imagine the only way to use NVENC directly from a browser would be via WebCodecs.
dtf··on Show HN: FFmpeg WebCLI – Full FFmpeg in Browser, Offline PWA, No Uploads(WASM)
I think WASM SIMD is only 128-bit wide.
dtf··on The first British person in space
That seems like a lot. Can I ask where you got that figure? Is "day-to-day" denoting some kind of specific budget?

I just tried to Google it and their AI responded with "The NHS and social care account for roughly half (49%) of all day-to-day public service spending controlled by the Westminster government.", linking me to a report from the The King's Fund [1].

But on reading that report, it seems to say only that 49.5% is the cost of staffing the NHS from its own budget, which it states as £205 billion in 2024/25 - that's more like 20% of the year's public spending [2]. Which seems more in line with what I had assumed.

[1] https://www.kingsfund.org.uk/insight-and-analysis/data-and-c...

[2] https://obr.uk/docs/dlm_uploads/BriefGuide-M23.pdf

dtf··on DaVinci Resolve – Photo
Great to hear!

I would guess the codec limitation might come from licensing requirements, as BMD would need to pay for h264/h265 licenses for Linux, and that can't really be sustainable for a free product. MacOS and Windows already come with licensed system codecs.

My project had ProRes source media, so there was no codec issue and everything worked very smoothly. I exported ProRes and used ffmpeg to transcode to whatever I needed.

I don't think I would have bothered trying to run Resolve on Linux were it not for finding that davincibox script. It was incredibly straightforward to install, and now I just start it by clicking on an icon like a regular application.

Have fun!

dtf··on DaVinci Resolve – Photo
I recently used Resolve (just the free version) for a project. It was my first time seriously using the software but I ended up spending a lot of time with it - lots of timeline editing, keyframe animation, some simple Fusion compositions, and a fair bit of work in the Fairlight page, rendering out daily . I did all this on my beloved Arch Linux workstation, and frankly it was rock solid, apart from exactly one crash when using the timeline keyframe editor - something that was solved by upgrading Resolve to the latest version.

I was really impressed by how well it worked for me on Linux.

I think these things might have helped:

- I use an X11 desktop (Cinnamon), not Wayland. I've tried it out on a GNOME Wayland desktop but it seemed quite a bit more clunky and froze frequently.

- PipeWire runs the system's audio routing, so Resolve just appears as another ALSA client, and I can then use wiremix to send to my preferred speakers or headphones. (I haven't tried any audio input yet)

- I didn't try to install Resolve natively, I used davincibox [1] to install and update it within a container (it uses distrobox, which then uses podman).

I'll now be purchasing the studio version, which hopefully will work as well.

[1] https://github.com/zelikos/davincibox

dtf··on Londoners are sick of viral videos telling lies about their city
All I know is, it's the end of the long Easter weekend, the sun came out to play yesterday and today and London has been looking very fine indeed.
dtf··on Delve removed from Y Combinator
It's giving Gwyneth Paltrow at the conclusion of her ski crash trial.
dtf··on LLM Writing Tropes.md
I suppose it might be because humans that use LLMs write like this.
dtf··on You Want to Visit the UK? You Better Have a Google Play or App Store Account
I'd love to hear any advice on that!

My friend went round and round and sent many documents back and forth for over a year trying to renew her British passport, to no eventual avail. UK authorities were extremely unsympathetic and unhelpful. The offending "misnamed" foreign passport was long expired and French authorities required a valid British passport to renew it - she was left without any passport at all for over a year, until the French took pity and provided an alternate path to renew her French passport.

dtf··on You Want to Visit the UK? You Better Have a Google Play or App Store Account
Some British women now find themselves in a Kafkaesque situation where the UK home office refuses to renew or grant them a UK passport, because their foreign passport is under a different name. (Greece and Spain are mentioned in [1], but I know people in France affected by this)

Where previously these women could at least travel to their birth country to visit dying relatives on their foreign passport, they are now locked out waiting two months for a £600 entitlement certificate. Meanwhile, non-British visitors can just pay £16 for an ETA on this whizzy app.

[1] https://www.theguardian.com/politics/2026/feb/16/border-rule...

dtf··on HackEurope 2026: A short rant on AI and hackathons
Why does this page include this code?

https://github.com/huseyinstif/CVE-2026-2441-PoC

CVSS 8.8 (High) | Actively Exploited in the Wild | Renderer RCE (Sandboxed)

A use-after-free vulnerability in Google Chrome's Blink CSS engine that allows a remote attacker to execute arbitrary code inside the browser sandbox via a crafted HTML page.

dtf··on What is happening to writing? Cognitive debt, Claude Code, the space around AI
"Is Claude Code junk food, though? ... although I have barely written a line of code on my own, the cognitive work of learning the architecture — developing a new epistemological framework for “how developers think” — feels real."

Might this also apply to learning about writing? If have barely written a line of prose on my own, but spent a year generating a large corpus of it aided by these fabulous machines, might I also come to understand "how writers think"?

I love the later description of writing as a "special, irreplaceable form of thinking forged from solitary perception and [enormous amounts of] labor", where “style isn’t something you apply later; it’s embedded in your perception" (according to Amis). Could such a statement ever apply to something as crass as software development?

dtf··on Zig – io_uring and Grand Central Dispatch std.Io implementations landed
You can actually go and read the source yourself [1]. If Bun is "just a wrapper", then surely Node.js and Deno are too?

[1] https://github.com/oven-sh/bun/tree/main/src

dtf··on People who come off slimming jabs regain weight four times faster than dieters
While "jab" is used almost universally across UK print and broadcast media to describe an injection, it's interesting to note the choice of accompanying adjective.

The Sun, The Telegraph, Daily Mail and The Times love to use "fat jab".

The BBC, The Guardian and The Mirror seem to prefer "slimming jab" or "weight-loss jab".

There's a lot to digest in those choices.

dtf··on Amazon EC2 M9g Instances
Good question! I read two different Amazon press releases on this but still had to come here for the answer. It seems strange they don't want to advertise the ISA of a compute product - does marketing think it might scare people away?
dtf··on Bruno Simon – 3D Portfolio
The author has YouTube devlogged this project over the last 12 months.

https://www.youtube.com/watch?v=Uc3Ujdh8Ba4

dtf··on Netflix to Acquire Warner Bros
Paramount being the spurned suitor. David Ellison doesn't sound happy.

https://www.hollywoodreporter.com/business/business-news/par...

dtf··on Cloudflare Down Again – and DownDetector Is Also Down
Edinburgh Airport is also down, suspending all flights after an "IT issue with our air traffic control provider". Not sure if this is coincidental, but the timing is rather suspicious!
dtf··on VST3 audio plugin format is now MIT
Funnily enough, that video talks about the pain of implementing a VST3 host at around the 25 minute mark. "If you're planning on doing it, set aside a lot of time."
dtf··on The Fisherman and His Wife (1857)
The punchline left me wondering why the wife didn't simply ask for something else after being returned to the filthy shack. Had she finally found contentment or enlightenment? Did the flounder finally call time?
dtf··on FFmpeg 8.0
I don't have a link to hand right now, but I'll try to put one up for you this weekend. I'm very interested in your implementation - thanks, will take a good look!

Initially this was just a vehicle for me to get stuck in and learn some WebGPU, so no doubt I'm missing lots of opportunities for optimisation - but it's been fun as much as frustrating. I leaned heavily on the SMPTE specification document and the FFMPEG proresdec.c implementation to understand and debug.

dtf··on FFmpeg 8.0
These release notes are very interesting! I spent a couple of weeks recently writing a ProRes decoder using WebGPU compute shaders, and it runs plenty fast enough (although I suspect Apple has some special hardware they make use of for their implementation). I can imagine this path also working well for the new Android APV codec, if it ever becomes popular.

The ProRes bitstream spec was given to SMPTE [1], but I never managed to find any information on ProRes RAW, so it's exciting to see software and compute implementations here. Has this been reverse-engineered by the FFMPEG wizards? At first glance of the code, it does look fairly similar to the regular ProRes.

[1] https://pub.smpte.org/doc/rdd36/20220909-pub/rdd36-2022.pdf

dtf··on Pixel 10 Phones
This codec needs hardware support to be practical (ie recording live video rather than just transcoding). So far, I think that's only available on certain Samsung models.
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