Frame-accurate drawing
Strokes are placed on the exact frame being viewed and remain fixed after the pen is lifted, keeping marks aligned while reviewing or scrubbing footage.
FrameSketch
Freemium
FrameSketch is browser-based video annotation software for animators. It lets you load local footage, draw on individual frames, and share annotations without uploading the video.
FrameSketchとは？
FrameSketch is a browser-based video annotation tool designed for frame-by-frame work on animation and motion footage. Users create a project and scene, load a video from their computer, then draw directly over the footage while stepping through or scrubbing the timeline.
The app supports animation-review marks such as arcs, pose notes, breakdowns, and comments. It keeps video files on the local device and stores drawings as editable project data. Projects can be exported as a single .fsk file for sharing or continued work, while optional cloud sync carries annotations and project metadata—not the underlying video.
FrameSketchでできること
Onion skin and timeline review
View neighboring frames, step forward or backward, mark a section, and play a selected range on a loop to inspect motion.
Annotation toolkit
Use brush presets, an eraser, laser pointer, geometric shapes, text labels, sticky notes, and comment markers. Pen pressure is supported when the input device provides it.
Layers and workspace controls
Organize strokes, shapes, and notes on layers that can be reordered, renamed, recolored, hidden, or adjusted for opacity. Grids, rulers, guides, pan, and zoom support detailed marking.
Local projects and optional sync
Work is saved automatically on the device. A project can contain multiple scenes, and exported `.fsk` files include scenes, layers, annotations, and settings. Optional cloud sync carries annotations only and can be disabled.
利用シーン
“Animation pose and arc review”
Step through a shot to mark motion arcs, pose changes, and breakdown observations directly on the relevant frames.
“Shot feedback and client review”
Add sticky notes and comment markers to specific frames, then export a compact `.fsk` project for another person to open and continue editing.
“Multi-scene project organization”
Keep several scenes in one project when reviewing footage from a sequence, with each scene retaining its own video and drawings.
“Cross-device annotation”
Sync annotations for supported projects and reselect the local video on another device so the drawings can be viewed without uploading the footage.
“Offline or privacy-sensitive work”
Install the app as a PWA and use it after the initial load, keeping video and locally stored drawings on the device when cloud sync is disabled.
よくある質問
Does FrameSketch require installation?
No. It runs in modern browsers including Chrome, Edge, Firefox, and Safari. It can also be installed as a progressive web app for app-like offline access.
What video files can it open?
It relies on the browser's built-in decoder and supports commonly playable MP4, MOV, M4V, and WebM files. H.264 MP4 is suggested when a file does not play; very large files may stutter on older machines.
Is the video uploaded when I annotate it?
No. FrameSketch reads the file locally and does not upload, store, or transmit the footage. If cloud sync is enabled, only annotations and project metadata are synced. On another device, the local video must be selected again.
How can I share a project?
Export the work as a single `.fsk` file containing the project data. The export can optionally be password-protected, and the recipient can open it and continue working. Individual frames can also be exported as PNG images.
Is FrameSketch free?
The core studio—including drawing, layers, onion skin, timeline, notes, and export—is free. Free accounts can sync up to three projects; the site notes that paid plans may be added later for advanced cloud features.
クイック情報
- Category
- Video Annotation; Animation Tool
- Platform
- Web app and installable PWA
- Primary users
- Animators and people reviewing motion footage
- Video handling
- Local browser playback; footage is not uploaded
- Project format
- .fsk export containing scenes and annotations
- Cloud sync
- Optional; free accounts can sync up to three projects
FrameSketch のトラフィック分析
トラフィックデータは参考情報としてご利用ください。
- ドメイン評価
- 4
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