MediaSeg

What it does

MediaSeg is a local macOS utility that splits large media files into upload-ready chunks for practical, size-limited workflows. It is useful for NotebookLM-style uploads and similar destinations, and now officially supports MP4, WEBM, and MOV, with M4A, MP3, and WAV available as experimental support. Recent updates also added theme and language support.

Split large media files into upload-ready chunks while preserving quality. - exaedge/MediaSeg

MediaSeg splits large media files into upload-ready chunks with local processing and a no-re-encode split path for MP4 input. It was produced and directed with full AI assistance, and shipped in 2 days from idea to public release. MediaSeg is a local macOS utility for splitting large media files into upload-ready chunks. For bug reports, feature requests, and other feedback, open a GitHub Issue . Output Folder: TrainingVideo_20260614-101523/ Files: TrainingVideo_001.mp4 TrainingVideo_002.mp4 TrainingVideo_003.mp4 Installation python3 -m venv .venv source .venv/bin/activate pip install PySide6 brew install ffmpeg Release builds bundle FFmpeg / FFprobe. Source runs require a local ffmpeg /…from github.com

• 
  MediaOptimMay 2026 · mediaoptim.com · ▲92

  Compress images, video & audio locally and save storage

• 
  TinyFast2025 · tinyfast.app · ▲319

  I am a developer. I have been building stuff for the last 13 years. One common challenge in all my projects is compressing assets to make them as small as possible. I used to end up using online compressors, but this has a lot of privacy concerns. So, I finally set down for couple of weeks and built this simple app. I can just drag and drop assets in it and it shrinks them. It currently supports around 25 file types. I built a lot of iOS apps but this is the first time building a macOS app, so any feedback is welcome.

• 
  Permute 4.0Jun 2026 · software.charliemonroe.net · ▲227

  The ultimate media converter for macOS

• 
  Quiebro2024 · github.com · ▲158

  Break files into 3 pieces and then use the app to restore it

• 
  Your private Reddit, best topic messenger2015 · itunes.apple.com · ▲44

  The latest macOS offers the world’s best way to play — and add to — your collection of music, movies, TV shows, podcasts, audiobooks, and more.

• 
  Remotion Media Parser2025 · remotion.dev · ▲57

  A modern multimedia library for the web

• 
  /dev/null▲472

  a social network for devs

  Dev tools · 2d ago · dev-null.sh

• 
  Whiteboard (YC W26) – an open-source IDE for thoughtful software design▲423

  open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.

  Dev tools · 27d ago · github.com

• 
  Reladraw – A diagram language where you decide where to place things▲411

  Contribute to reladraw/reladraw development by creating an account on GitHub.

  Dev tools · 25d ago · github.com

• 
  OpenBot▲362

  Grok Bot alternative: free, local, open-source, multiplayer

  Dev tools · 22d ago · openbot.run

• 
  Talanoa▲340

  Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…

  Dev tools · 20d ago · talanoa.email

• 
  CoreSpeed▲332

  One MCP for everything your agents need: apps, memory, tools

  Dev tools · 27d ago · corespeed.io

• 
  Fundraisly▲1,537

  AI fundraising agent that finds investors and books meetings

  AI · Jun 2026 · fundraisly.com

• 
  Homebrew 6.0.0▲1,481

  Today, I’m proud to announce Homebrew 6.0.0. The most significant changes since 5.1.0 are a new tap trust security mechanism, the new faster, smaller, default internal Homebrew JSON API, sandboxing on Linux, better defaults informed by our user survey, many brew bundle improvements, improved performance and initial support for macOS 27 (Golden Gate). Happy to discuss any questions here!

  Dev tools · Jun 2026 · brew.sh

• 
  Performative-UI – A react component library of design tropes▲1,181

  Hi HN! I was super frustrated at apps like tiktok and wechat preventing me from saving or downloading the animated gifs, so I made a little tool to turn a screen recording into a slack-sized emoji. Hope you get some value from this!

  Life & fun · Jun 2026 · vorpus.github.io

• 
  Upstream▲976

  The inbox designed for humans and agents

  AI · Jun 2026 · upstream.do

• 
  Goldfish▲958

  Press Option. It knows your work and replies like you

  AI · Jun 2026 · goldfish.sh

• 
  I made Google Trends for Hacker News by indexing 18 years of comments▲822

  Search 18 years of Hacker News and chart how any topic, tool, or person trended. Overlay terms to compare their rise and fall across 45M posts and comments.

  Life & fun · Jun 2026 · hackernewstrends.com