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Our Rust rewrite, ffmpeg-rs, achieved a 0.88% video conversion improvement over popular alternatives, with no any further optimizations. Benchmarked using the Balls Categorical Framework for Centered and Symmetric Effects to ensure memetic symmetry. Video is encoded using ffmpeg-rs.

439,228 görüntüleme • 9 ay önce •via X (Twitter)

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Here's my conversation all about FFmpeg, the legendary open-source software powering most video on the Internet. In the episode, I talk with Jean-Baptiste Kempf and Kieran Kunhya. JB is lead developer of VLC and Kieran is FFmpeg contributor, codec engineer, and the person behind the now-infamous FFmpeg account on X. VLC (VideoLAN), by the way, is also a legendary piece of open-source software: it's a video player that can open basically anything & has been downloaded over 6 billion times. I think both FFmpeg and VLC are two of the most important and impactful software systems ever created, both open source, and both created & maintained by volunteers: brilliant engineers from all walks of life. Thank you to everyone who contributed to FFmpeg and VLC, and in general to all engineers giving their heart & soul to building systems used by millions (or billions) of people, and often doing so not for money, status, or fame, but purely for the love of building great software and doing good for the world. Thank you to the builders! 🙏❤️ Shoutouts in this chat to John Carmack Andrej Karpathy Elon Musk Tim Sweeney and everyone who is a contributor & fan of open source! It's here on X in full and is up everywhere else (see comment). Timestamps: 0:00 - Episode highlight 2:17 - Introduction 5:35 - Weirdest things VLC opens 9:59 - How video playback works 19:20 - Video codecs and containers 30:07 - FFmpeg explained 51:07 - Linus Torvalds 55:46 - Turning down millions to keep VLC ad-free 1:10:04 - FFmpeg & Google drama 1:29:18 - FFmpeg developers 1:35:55 - VLC and FFmpeg 1:40:29 - History of FFmpeg 1:43:46 - Reverse engineering codecs 1:57:01 - FFmpeg testing 2:01:08 - Assembly code (handwritten) 2:25:26 - Rust programming language 2:34:42 - FFmpeg and Libav fork 2:43:04 - Open source burnout 2:50:51 - x264 and internet video 3:04:07 - Video compression basics 3:11:04 - CIA and fake VLC 3:21:39 - Ultra low latency streaming 3:39:07 - AV2 codec and video patents 3:48:59 - VLC backdoors 3:59:14 - Video archiving 4:05:51 - Future of FFmpeg and VLC

Lex Fridman

516,678 görüntüleme • 4 ay önce

HERMES AGENT CAN CREATE VIDEOS. NOT WITH AN API CALL. IT WRITES THE CODE, RENDERS THE SCENES, AND STITCHES THEM INTO AN MP4. the video attached to this post was generated by Hermes Agent using manim-video skill. three bundled video skills most people skip: 1. MANIM VIDEO 3Blue1Brown-style animated explainers. algorithm visualizations, equation derivations, architecture diagrams, data stories. the pipeline: PLAN → CODE → RENDER → STITCH → AUDIO → REVIEW Hermes writes a plan.md with narrative arc and scene list. then codes a Python script with one class per scene. renders each scene through Manim CE. stitches clips with ffmpeg. adds voiceover if you want it. requirements: → Python 3.10+ → Manim Community Edition v0.20+ → LaTeX (texlive-full) → ffmpeg → no GPU needed draft quality: manim -ql production quality: manim -qh 2. HYPERFRAMES complement to manim-video. use manim for math and algorithms. use hyperframes for everything else: motion graphics, talking-head with captions, product tours, social overlays, shader transitions. HTML is the source of truth. GSAP timeline for animation. CSS for appearance. HyperFrames engine captures frame-by-frame and encodes to MP4 or WebM with ffmpeg. 3. KANBAN VIDEO ORCHESTRATOR this is the advanced play. a multi-agent video production pipeline backed by Hermes Kanban. it creates profiles for each video role. a director profile decomposes the project into kanban tasks. renderer profiles pick up scenes and produce them. the orchestrator decides which skill fits each scene: manim-video for math, hyperframes for motion graphics, p5js for generative art, blender-mcp for 3D, ascii-video for terminal aesthetics. one prompt. multiple agents. one final video. HOW TO USE: enable any of these: /skills search manim /skills search hyperframes /skills search video or ask directly: "create a 60-second explainer video about how the self-improvement loop works in Hermes Agent. use manim style. dark background, amber and teal accents." Hermes writes the plan, codes every scene, renders, stitches, and delivers an MP4. you review and publish. comment MANIM and I'll send you the exact prompt I used to generate the video in this post. full Hermes NIGHT MODE WORKFLOW 👇

YanXbt

33,602 görüntüleme • 3 ay önce

112 New Low-Floor Buses to Be Deployed in September 🚍 🚌 Cabinet approves Rs. 800 million in equity capital for Lanka Metro Transit (Pvt) Ltd to develop infrastructure for modern public transport, with the company set to deploy 112 additional low-floor buses in September following the successful Colombo Urban Transport Pilot. A further Rs. 267.5 million is to be provided in 2027 for operational activities. Rs. 800 Million Equity Capital for Lanka Metro Transit The Cabinet of Ministers has approved the provision of Rs. 800 million in equity capital to Lanka Metro Transit (Pvt) Ltd to support the development of infrastructure required for modern public transport operations. Lanka Metro Transit (Pvt) Ltd was incorporated on October 3, 2025, as a subsidiary of the Sri Lanka Transport Board under the Companies Act No. 7 of 2007, with the objective of modernizing public transportation. The company is currently conducting the Colombo Urban Transport Pilot using 10 low-floor buses purchased with funds allocated under the Clean Sri Lanka Programme. The pilot has demonstrated commercial feasibility and received public acceptance, according to the government. Based on the progress of the pilot, the company plans to deploy a further 112 low-floor buses in September. To support the expansion, infrastructure facilities are required, including a fully equipped central workshop in Ekala, new modern bus depots in Thalangama, Kadawatha, Rathmalana and Homagama, as well as internal roads and bus yards. Accordingly, Cabinet approved the proposal submitted by the Minister of Transport, Highways and Urban Development to provide Rs. 800 million in equity capital for the infrastructure development of Lanka Metro Transit. The government has also approved the provision of a further Rs. 267.5 million in 2027 to support the company's operational activities.

Sri Lanka Tweet 🇱🇰

11,846 görüntüleme • 1 ay önce