FrameTrellis 1.0 arrives as an open-source, local-first desktop video editor

FrameTrellis, an open-source video editor built to run entirely on the user's own machine, has reached version 1.0.0, its first stable release. The developer, who signs the announcement on dev.to as Sanskar, frames the project around a straightforward premise: video editing belongs in a native desktop application where people keep control of their own media and projects. According to the dev.to post, the software requires no account and involves no cloud processing, telemetry, or advertising.

What version 1.0 covers

Technically, FrameTrellis is written in C++20, uses Qt 6 and QML for its interface, and leans on MLT and FFmpeg for the media pipeline. The first stable release concentrates on practical editing workflows, reliable project handling, and rendering locally.

The feature list on dev.to includes multi-track editing: video and audio clips can be arranged on a timeline, moved between tracks, trimmed at the edges, split, and removed with ripple deletes. Playback offers a real-time preview with synchronized audio, frame-by-frame stepping, and frame-accurate timecode. Audio support covers visible waveforms along with per-clip volume, fades, and mute settings.

On the visual side, the release handles dissolves, audio crossfades, opacity changes, and adjustments to brightness, contrast, and saturation. Export is limited to a single format for now — MP4 with H.264 video and AAC audio — with quality settings, presets, progress reporting during renders, and the option to cancel.

Project durability receives particular attention. FrameTrellis works with validated .ftproj project files and provides a 500-step undo and redo history, automatic saving, crash recovery, and relinking for media files that have moved or gone missing on disk.

Platforms and known gaps

Prebuilt packages are Windows-only in this release: an installer and a portable ZIP, targeting Windows 10 (version 1809 or later) and Windows 11. Linux users can build the application from source, but packaged Linux builds are not yet available, and macOS is not supported at all.

The author is candid about what is still missing. Titles, subtitles, keyframes, proxy media, and additional export formats all remain on the roadmap, and the dev.to post presents the stable release as a starting point rather than a finished product.

The project is free and open source under the GPL-3.0-or-later license. Bug reports, testing, documentation help, and code contributions are welcome through GitHub, and the developer is specifically seeking feedback on the editing workflow, timeline usability, playback, and export reliability. The post also polls readers on what an open-source editor should prioritize next: timeline usability, playback performance, proxy media, or additional editing tools.

Why it matters

In a landscape where much commercial editing software sits behind subscriptions, accounts, or cloud-linked services, FrameTrellis stakes out the opposite position: local files, local rendering, no telemetry, and a copyleft license. That combination matters for users with large media libraries, privacy concerns, or unreliable internet connections, and for anyone who wants an editing tool that cannot quietly change terms or disappear behind a paywall.

The emphasis on crash recovery, autosave, and a long undo history also signals that the project is targeting real editing sessions rather than a minimal demo. The trade-offs are real — a single export format, no macOS support, and no packaged Linux builds — but with the roadmap published and feedback channels open, the 1.0 release gives the open-source video editing space another actively developed, community-driven option to watch.