Timeline Studio：AI辅助剪辑视频

Open-source, local-first video editor where creators and AI agents edit the same real timeline.

Timeline Studio — Browser AI Video Editor English | 中文 | 日本語 | 한국어 | Español | Français | Deutsch | Português | ไทย | Tiếng Việt | Русский Create with Anna Try the Anna edition for AI-assisted editing and project continuity: Describe your edit to Anna, review a plan based on your brief and clip metadata, then apply supported clip ordering and simple 1× video trims. Projects and media save automatically to Anna cloud storage and can resume with the same Anna account in another browser. Local project checkpoints provide an additional recovery option. Refine the editable multi-track timeline, add AI voiceovers and manual captions, and export MP4 using an available browser encoder. This desktop preview plans from metadata, without analyzing video frames or audio; local AI features depend on the Anna container’s capabilities. → Try Timeline Studio on Anna 遇到任何问题，欢迎扫码进群交流。我们急需你的建议和反馈！ Run into any issues? Scan the QR code to join our WeChat group. We really need your suggestions and feedback! Responsible use of deep synthesis This tool uses deep-synthesis technology and is intended solely for technical research and learning. Users must ensure that they: use only facial images or videos of themselves or people who have provided lawful authorization; do not create or distribute any illegal, infringing, false, or misleading content; do not present generated content as authentic footage or impersonate another person without their consent. Users are solely responsible for any legal liability arising from violations of these requirements. Project updates 2026-10-24 — Replaced model-based HD restoration with adjustable local contrast and edge enhancement at original resolution, with before/after comparison and saved settings. Comparison playback uses one audible source stream, and enhancement status copy is consistent. Direct frame transfer and reusable buffers now avoid per-frame PNG round trips while keeping the enhancement algorithm unchanged. Detail enhancement now runs luminance, blur and edge processing on WebGPU, prefers a high-performance GPU, and falls back to the CPU when unavailable; the workspace shows the actual backend. 2026-10-21 — Integrated saved source-scene analysis, reviewed execution plans, evidence-linked transcript summaries and optional offline visual search (#112–#115). Offline runtimes require separate preparation. #112–#115. 2026-10-21 — Added editable Jianying Pro draft export through the local host and CLI, including transform keyframes and compatibility reports; targets domestic Jianying Pro 11.6.0 on macOS. 2026-10-20 — Added an optional macOS local host with durable project saving, active-session renewal and recoverable write leases. The browser editor remains available. Setup and limits. 2026-10-19 — Fixed replay after the AI watermark-removal comparison preview reaches the end. See the public Roadmap for planned work, Releases for shipped changes, and Issues for focused tasks and bugs. What can it produce? Explore reproducible before/after examples and editing recipes: → AI Video Editing Skills Handbook Timeline Studio is a local-first AI video editor that runs in the browser. It combines a CapCut-style multi-track timeline with WebGPU AI music and repair, multilingual voiceovers, automatic captions, talking-avatar generation, and deterministic offline export. Open the editor · Watch on YouTube · Hugging Face Space Video demo Auto Edit Visual analysis, keyframes, captions, and export. timeline-studio-demo.mp4 AI Repair Timed watermark removal with before/after review. ai-voiceover.2.mp4 AI Voiceover timeline-studio-ai-voiceover-demo.mp4 AI capabilities Multilingual voiceover: Chinese and mixed Chinese/English Hojo TTS Light 80M FP16 reference voices (晴岚 and 若溪), with autoregressive generation on WebGPU and stable waveform decoding on WASM; English Kokoro 82M; and browser Piper voices for German, Spanish, French, Italian, and Brazilian Portuguese. Local AI music: Stable Audio 3 Small Q4 ONNX runs through WebGPU with translated free-form prompts, 30/60/90/120-second choices, waveform-aware long-track looping, persistent model caching, and automatic insertion into My Assets. Automatic captions: Whisper small q8 ONNX with waveform-aware timing and conservative Chinese recognition cleanup. Smart framing: YOLOS tiny subject detection and MODNet portrait matting for smart crop, caption avoidance, and background removal across images and complete videos. AI Repair: browser-local MI-GAN watermark/object removal with multiple timed repair regions, plus NanoVSR 644K WebGPU 4× restoration for images and videos with synchronized before/after comparison. AI vocal separation: isolate vocals and place the instrumental stem on the music track without leaving the browser workflow. Digital human: JoyVASA audio-to-motion and LivePortrait neural rendering with WebGPU, 256px preview and 512px quality paths. Local-first inference: large models are lazy-loaded, revision-pinned, and cached by the service worker; supported workflows run without uploading project media to an editing backend. Resilient model delivery Browser AI models are mirrored on both Hugging Face and ModelScope. Timeline Studio uses ModelScope first for Chinese interfaces and domestic sessions, uses Hugging Face first elsewhere, remembers the first working source for the current runtime, and automatically falls back to the other source when needed. Cache identities are shared across both providers, so switching routes does not download the same revision twice. Stable Audio: Hugging Face · ModelScope Voice models: Hugging Face · ModelScope (mixed upstream licenses; see the repository model card) Timeline Studio ONNX models: Hugging Face · ModelScope Depth Anything V2 Small Q4F16: Hugging Face · ModelScope (Apache-2.0) Vocal remover: Hugging Face · ModelScope Editing and export Contiguous main Visuals track plus timed picture-in-picture overlays. Direct canvas selection, movement, proportional resize, rotation, masks, filter