Alcea
1.2 KiB
Video Annotation Tool
A browser-based tool to annotate your videos after recording with precise audio overlays. Generates exact FFmpeg commands to merge audio snippets into your video timeline.
Features
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100% client-side HTML/JS – No backend, no installation, no dependencies
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Post-recording annotation – Add audio comments, corrections, or narration over existing tracks
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FFmpeg command generation – Outputs ready-to-use merge commands
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Batch import – Auto-place audio files by filename timestamp:
(hh_mm_ss)_name.mp3(e.g.,(01_15_30)_correction.mp3)(mm_ss)_name.mp3(e.g.,(05_45)_note.mp3)
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Qwen3-TTS integration – [Optional] Generate custom voice snippets via QwenTTS API
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SRT parser – Upload subtitle files to auto-generate annotation timestamps (Subtitles can be extracted from onscreen text via: https://github.com/timminator/VideOCR/releases/download/v1.5.1/VideOCR-GPU-v1.5.1-CUDA-12.9-setup-x64.exe )
Quick Start
Just open the HTML file
- Download
annotation-tool.html - Double-click to open in any modern browser
- Start annotating – no server, no install.