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Yooo

@chalier.fr
21 followers 46 following 110 posts

hi 🥸

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Yooo @chalier.fr · 01/08/2026
Here is kind of a virtual installation, about leaving a trail as you pass: chalier.fr/les-passants/
chalier.fr
Les Passants
Une fenêtre sur une place où ne figurent que des passages. N'est ainsi révélé que ce qui laisse une trace, témoin d'une existence infléchissant le cours des choses, dont il faut supporter la responsab...
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Yooo @chalier.fr · 23/07/2026
Having fun learning #Blender Inspiration:
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Yooo @chalier.fr · 12/07/2026
I have not published in a while, but here are some news. Bad one first: with the current heat waves here in Europe, I periodically turn off my self-hosted server. If you get a timeout error, retry when the air is cooler!
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Yooo @chalier.fr · 12/03/2026
À Clermont-Ferrand ce week-end se tient la compétition vidéo du festival Vidéoformes. Mon (modeste) film « Ensemble, ils dérivèrent » y sera projeté dimanche après-midi. Le reste de la programmation me semble très prometteuse, j'ai hâte !
festival.videoformes.com
Festival VIDEOFORMES 2026
Structure de diffusion et de production artistique depuis 1984, dans le domaine de l’art vidéo et des arts numériques, VIDEOFORMES organise un festival international éponyme annuel à Clermont-Ferrand
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Yooo @chalier.fr · 02/02/2026
In a somewhat recent Tsoding stream, I've heard about venation pattern algorithms, and tried to implement one (Runions et al.). You may try it yourself at chalier.fr/generative-a...
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Yooo @chalier.fr · 19/01/2026
Inspired by Actinomy's server charm manifesto, I've tried to build my own. Very pleasant experience, got to learn FreeCAD, how to solder things. If you want to know what's on it, you'll have to get near me! To build your own: codeberg.org/actinomy/ser...
Screenshot of FreeCAD showing the case for my server charmPhoto of the 3D printed case (white top, pink bottom) with the electronics chip visible insidePhoto of the 3D printed case (white top, pink bottom) with a transparent panel hiding the inner electronicsPhoto of the server charm hanging from a belt on my trousers
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Yooo @chalier.fr · 03/01/2026
I've been experimenting a bit with Sharp, Apple's open model for generating 3D models from single photos. It's quite good, and certainly allows for various cool effects. Here are in an example rendered with Blender and the 3DGS Render add-on by the Kiri Engine team.
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Yooo @chalier.fr · 27/11/2025
Turing patterns emerging from a repeated blur-sharpen process, a WebGL implementation: chalier.fr/generative-a...
Moshed macro images of two mushrooms, with Turing patterns. The soil is black and white. The background is green and black. Some starry red shapes are visible in the background.Moshed photo of the reflection of trees on a river surface, with Turing patterns.Moshed photo of two tree trunks lightened by the sun, with a strong shadow, in an open field. Turing pattern creates a sort of mosaic effect, with shades of yellow, green and brown.Moshed photo of two ducks floating in water, with a slight introduction of Turing patterns. The pattern has not really emerged yet.
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Yooo @chalier.fr · 11/11/2025
Quelques effets maison dans ce clip ! www.youtube.com/watch?v=YOiN...
youtube.com
Paix du Soir - Cité Sauvage
YouTube video by Cité Sauvage
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Yooo @chalier.fr · 02/10/2025
Inspired by a recent Spectral Collective video published on 3B1B's channel, I've implemented a simple version of the liquid-vapor model: chalier.fr/generative-a... Move the mouse to change params, scroll for speed, left/right click to add/remove particles, press S/R to screenshot/record the screen.
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Yooo @chalier.fr · 21/09/2025
Très cool à suivre (en replay malheureusement) ! Je partage à nouveau une implémentation rapide sous WebGL de ces bassins de Wada : chalier.fr/generative-a...
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Yooo @chalier.fr · 12/09/2025
Lately, I've been refactoring and cleaning up my FFtools repository: github.com/ychalier/fft...
github.com
GitHub - ychalier/fftools: Graphical Toolbet
Graphical Toolbet. Contribute to ychalier/fftools development by creating an account on GitHub.
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Yooo @chalier.fr · 11/09/2025
A few weeks ago, I published the version 1.11 of Transflow, which generalizes the way pixel sources behave with a nice 'Compositor' framework. Mainly, Transflow should now be easier to use, even for more advanced effects. I've also updated the documentation with more examples, for you to try it out.
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Yooo @chalier.fr · 29/07/2025
I've just pushed the v1.10 of Transflow. Not a lot a new features, I've tried to clean up the code and make it more structured: github.com/ychalier/tra... The next update should also be a refactoring, I would like to unify the multiple accumulation methods into a cleaner, general class. Stay tuned!
github.com
Release v1.10.0 · ychalier/transflow
Changelog Refactored code into multiple files Introduced flow sources builders to preprocess flow source parameters Introduced a way to import and export main configuration Added FramesVideoOutput...
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Reposted by Yooo
Mickaël Launay @mickaellaunay.bsky.social · 25/07/2025
Depuis quelques temps, je me suis remis à jouer aux échecs et je fais régulièrement des parties sur l'appli @chess.com qui permet de trouver des adversaires en direct un peu partout dans le monde. Or j'ai remarqué un truc :
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Yooo @chalier.fr · 02/07/2025
Also, due to the current heatwaves here in France, I'm turning off my web server during heat peaks, I would not want to fry it. Sorry for the inconvenience!
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Yooo @chalier.fr · 02/07/2025
Just released v1.9.0 of Transflow, with a brand new GUI! If you're afraid of command line interfaces, this should make your life easier. Beware, though, this is still experimental, bugs may/will arise.
Screenshot of Transflow GUI, a webapp with two panels (left and right) and many inputs for setting parameters. A video is loaded on the left, a live preview of the output is visible on the right.
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Yooo @chalier.fr · 20/06/2025
I've just added an audio reactive feature to my randomart webapp. In short, you can use specific variable names in the grammar to refer to the (normalized) intensity of ranges of the frequency spectrum (e.g. low, mid & hi). Here's a sneakpeak: 🎵 Mega Hyper Ultrastorm (Kevin MacLeod, 2017)
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Yooo @chalier.fr · 26/05/2025
2y ago, I built a tool to generate halftone images, inspired by a paper about halftone QR codes. Lately, I've wanted to use this technique to embed a QR code within an halftone image. I found an old repo on GitHub, refactored it and added my scripts: github.com/ychalier/hal...
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Yooo @chalier.fr · 10/05/2025
Je partage mon implémentation (faite un peu à la va-vite), réalisée pour WebGL (rapide et à peu près portable !) : chalier.fr/generative-a...
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Yooo @chalier.fr · 09/05/2025
I tweaked Transflow to replicate the 'sticky texture' effect of regular datamoshing. The code is a bit dirty but the result is nice! Here are three clips pasted together:
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Yooo @chalier.fr · 03/05/2025
Just learned about LiDAR HD data by IGN, a point cloud mapping of most of surface of France. It's really cool, and freely available! Visualization made with QGIS 3D Viewer.
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Yooo @chalier.fr · 13/04/2025
Motion Interference. Applying the reversed flow on the same video makes pixels relatively static while revealing some of the transformations – e.g. through perspective change or flow inaccuracies. Thought for later: is there a motion equivalent of the Moiré effect? Below, view from a moving train:
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Yooo @chalier.fr · 26/03/2025
Been trying out Deforum for generating videos with Stable Diffusion. It's great at textured and abstract drawings. (Side note: I need a better GPU)
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Yooo @chalier.fr · 22/03/2025
I've been playing around with a public webcam recording 30s clips every 5min of a pedestrian area, and blending those clips together. Here's an example with an (about) 8 hours span (94 clips). Also, you may try to find that place, it should be pretty easy!
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Yooo @chalier.fr · 06/02/2025
Same theme, different domain: www.youtube.com/watch?v=EmPZ...
youtube.com
the proper way to watermark music
YouTube video by idiotinium
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Yooo @chalier.fr · 01/02/2025
Recently, I've enhanced the Transflow web demo and added a few features, such as thresholding, iterative Horn-Schunck method or screen recording.
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Yooo @chalier.fr · 24/01/2025
Well, my FlowNet2 integration attempt was not successful: I had a lot of issues with installing dependencies and finding compatible module versions. However, I managed to integrate LiteFlowNet, a more recent alternative, which also provides very high quality results!
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Yooo @chalier.fr · 18/01/2025
I tried to use a MPEG-4 Part 2 video codec (Xvid) instead of h264 for my datamoshing script that removes I-Frames from the bitstream. Results are much more interesting! h264 really was too resilient! and frames would heal instantly. Now they're crushed, as they should be.
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Yooo @chalier.fr · 15/01/2025
Transflow update v1.6! Lately, I've been working on new features, mainly to support other optical flow algorithms. Then, the only option was Farnebäck's algorithm, OpenCV's solution for dense flow fields. I've now added support for Lukas-Kanade and Horn-Schunck methods.
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Yooo @chalier.fr · 04/01/2025
Been working on a new feature for Transflow, to provide a way to move things more progressively and avoid unpleasant blinking. In the example below, new pixels are introduced in the rightmost column, and then moved around with the optical flow. Will release it soon with other minor fixes!
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Yooo @chalier.fr · 03/01/2025
I learned that Audacity can be somewhat automate with the mod-script-pipe module, so I tried to produce frame-by-frame moshed videos with it. I added it to my datamoshing repo on GitHub: github.com/ychalier/dat...
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Yooo @chalier.fr · 02/01/2025
In last Transflow version, I added an automatic upscaling feature for using small video inputs. E.g. a 128*72 flow can be applied to a 1920*1080 image by counting 15*15 blocks. Besides being faster, it also gets closer to the original datamoshing look and feel, which mostly relies on macroblocks.
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Yooo @chalier.fr · 27/12/2024
Recently, I stumbled upon a video by Japhy Riddle called 'Making Audio Waves That Look and Sound Like Things': www.youtube.com/watch?v=qeUA...
youtube.com
Making Audio Waves That Look and Sound Like Things
YouTube video by Japhy Riddle
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Reposted by Yooo
Gro-Tsen @gro-tsen.bsky.social · 23/12/2024
This open source framework for generating procedural 3D scenes developed by the Princeton Vision & Learning Lab, “Infinigen” infinigen.org , seems almost too good to be true. www.youtube.com/watch?v=6tgs...
youtube.com
Introducing Infinigen
YouTube video by Princeton Vision & Learning Lab
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Reposted by Yooo
Retrovoider @retrovoider.bsky.social · 29/10/2024
For anyone also interested in databending/datamoshing: a great starting tool is audacity. Save an image as a .bmp or .tif Use audacity to import raw data, u-law, little-endian Leave the first 3 or so % alone Mess with 'Filter Curve EQ' img1: Low end img2: middle img3: High end
Same image from image 2, databent with low end.Picture I took somewhere..? I wish I had more idea where with was. Databent to distort it.Picture I took on a six hour road trip, databent to distort it.
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Yooo @chalier.fr · 22/12/2024
I recently heard about granular synthesis and I wanted to experiment with it. I've just read about the principle and tried a basic implementation, it's fun! I heard that Microsound by Curtis Roads was a good introduction to the principle, so I guess I'll read that now.
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Yooo @chalier.fr · 20/12/2024
The tool is available in Beatviewer v1.1.0! bsky.app/profile/chal... github.com/ychalier/bea...
github.com
Release v1.1.0 · ychalier/beatviewer
Changelog Added render script Fix graph display Added warmup feature (for offline analysis) Various fixes
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Yooo @chalier.fr · 20/12/2024
Someone recently incited me into adding a video rendering feature for a past projet, Beatviewer. You give it an audio track, and a video, and it edits it automaticlly. Here's a sneak peak with a slow-down effect (better experienced with sound 🔊):
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Yooo @chalier.fr · 15/12/2024
Transflow v1.3.0 with a new feature: input repetition! github.com/ychalier/tra...
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Yooo @chalier.fr · 14/12/2024
I tried to apply different convolution kernels to the computed optical flow, and see how it impacts the result. Most interesting results came from using the gradient to directionnaly select the movement.
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Yooo @chalier.fr · 11/12/2024
When I thought of doing transitions as in this example bsky.app/profile/chal..., I wanted to try a new way of moving pixels, so they leave an empty spot behind them (which could later be covered by another moving pixel). Here comes the Crumble Accumulator, for Transflow v1.2.0!
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Yooo @chalier.fr · 09/12/2024
Just released v1.1.0 for Transflow, with the recent changes mentionned here: support for multiple flow sources, better gradient algorithm, and controlled bitmap alteration. Here is a recording of the alteration GUI tool:
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Yooo @chalier.fr · 08/12/2024
I've changed the algorithm used in Transflow for generating gradients. The previous hacky solution would generate blobs and blur them, which was neither efficient nor pretty. The new approach is based on a simplified version of Randomart. It's faster and a lot nicer!
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Yooo @chalier.fr · 07/12/2024
I wanted to try controlling the output of Transflow renderings. It appears that with enough motion, the output is only determined by a couple of pixels. This means that subtly altering the input is often enough. E.g. this deer image contains only 80 pink pixels, but that's all what matters.
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Yooo @chalier.fr · 06/12/2024
First post ✨ to mention a new feature for my optical flow transfer tool (Transflow): you can now merge multiple flow sources and control how they interact. I've pushed my changes to github.com/ychalier/tra...
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