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ROSI Release Notes

Latest release notes for ROSI (v4.2.1).

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These notes are pulled automatically from the latest GitHub release. View the full release on GitHub for download links and assets.

sell v4.2.1 update Published July 21, 2026

4.2.1

Changes in v4.2.1:

  • PKG: Updated packages.

Changes in v4.2.0:

  • NEW: Windows code signing: WOO HOO!! Windows Codesigning is here!
    • After a good while of not having it, Windows Binaries are now signed by Azure Artifact Signing!
  • NEW: Download Profiles: Added download profiles to settings to allow selecting between Best video, Audio-only, and Custom quality modes.
  • Settings: Added an "Ask every time" option to prompt for a download location on every run or download directly to your saved directory.
  • UI: Added a collapsible layout to the queue section to save vertical screen space. The collapsed state is persisted in settings, and arrow keys can be used to expand or collapse it.
  • UI: Removed the quality and audio toggles from the setup wizard, pointing users to the new download profiles in Settings.
  • FFMPEG: Updated the bundled FFmpeg binaries, wording, notices, and GPL source offer to version 8.1.2 across Windows, macOS, and Linux.
  • Testing: Added new unit and DOM tests to cover download profiles, folder selection settings, and collapsible queue behavior.
  • Codebase: Migrated settings schema to version 5 to accommodate the new profiles and collapsible queue preferences.
  • YT-DLP: Updated yt-dlp to 2026.07.04.
  • Electron: Updated electron major release to v43.
  • UI: Updates to the UI buttons.
  • Settings: Added the Flat UI setting to settings.json so it is wired into the app reset button.
  • UI: Major updates to the UI: More subtle 3D additions and better overall UI.
  • UI: Added a Flat UI toggle switch on the main sidebar so you can toggle between the Flat UI and the normal UI.
  • FFMPEG: Enforced checksums for bundled binaries.
    • Added the FFMPEG_DL_SERVER environment variable and server download support.
    • Defined the .7z naming scheme as ffmpeg_os_arch.7z (macOS for the macOS platform).
    • Added npm run get:ffmpeg:all to download, extract, and checksum all platform and architecture builds.
  • UI: Fixed WCAG color contrast failures on the download button, modal primary buttons, help-icon hover, history "Open" hover, reset-button hover, and modal danger hover. Added --warning-contrast and --danger-contrast design tokens.
  • UX: Added a close-confirmation dialog when a download or queue is actively running to prevent accidental progress loss.
  • UX: The download folder picker now opens to your last-chosen folder instead of always defaulting to ~/Downloads.
  • NEW: Queue Drag-and-Drop: You can now drag and drop URLs directly into the queue textarea.
  • NEW: Queue Keyboard Shortcut: Added Ctrl/Cmd+Enter to submit URLs from the queue textarea.
  • UI: Toast notifications are now capped at 5 visible per container to prevent screen flooding during rapid error loops.
  • UI: Added explicit type="button" to all button elements for HTML robustness.
  • Testing: Cleaned up ESLint configuration to suppress no-unsafe-* noise in test files while keeping full strictness on production code.
  • PKG: Updated packages.

FULL CHANGELOG:

ℹ️ Click here to see the full change-log for v4!

Changes in v4.1.0:

  • NEW: Preview: Added video preview before downloading so ROSI can show the title, uploader, duration, thumbnail, playlist info, and other basic metadata before saving.
  • NEW: Enhancements: Added download options for embedded metadata, embedded thumbnails / cover art, subtitles with custom language codes, and SponsorBlock segment removal.
  • Updater: Fixed macOS in-app updates where Restart Now did nothing after an update finished downloading.
  • Updater: Fixed the Auto update channel so beta installs actually receive beta updates when that setting is selected.
  • Downloads: Manual downloads and the queue no longer stomp each other. ROSI now blocks conflicting starts instead of silently killing one mid-run.
  • Downloads: Queue downloads now use your chosen download folder instead of always saving to system Downloads.
  • Conversion: Updated FFmpeg conversion to probe source codecs first, then copy compatible video/audio streams instead of re-encoding when possible.
  • GPU detection: Updated hardware acceleration detection to probe actual FFmpeg encoders, cache the result, and only claim a GPU path when that encoder can run.
  • Settings: Importing settings refreshes the UI in-place instead of forcing a full app restart.
  • macOS: Closing the window now stops active downloads instead of leaving yt-dlp running headless in the background.
  • Security: Tightened download URL validation, output path checks, ffmpeg path handling on import, and subprocess environment hardening.
  • Typescript: Migrated the main renderer engine from JavaScript to TypeScript and widened renderer type coverage.
  • UI: Split the renderer CSS into focused files, bundled local Manrope / IBM Plex Mono fonts, tightened CSP by removing remote Google Fonts, and shipped a broader accessibility and polish pass across the setup wizard, modals, queue, launch theming, and update progress UI.
  • FFMPEG: Updated FFmpeg compliance docs, notices, source offer, and binary placeholders for bundled FFmpeg builds.
  • Testing: Expanded automated coverage across the updater, downloader, preview pipeline, IPC validation, renderer modules, video info parsing, codec-aware FFmpeg args, GPU probing, settings migration, and queue wiring.
  • PKG: Updated packages and bundled binaries.

Note: Older release history is omitted here. Use the GitHub release link above for the full changelog.

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