FreeCaptions - Free local SRT and Video captioning

Upload Audio or Video

Choose Media File

📁 Drag & drop your file here, or click to browse Supports audio (MP3, WAV, M4A) and video (MP4, MKV) files

Speech Recognition Model Larger models are more accurate but take longer to download and run. Loaded once, cached locally.

Lite ~75 MB Fastest, suitable for clear audio. Lower memory usage. Optimized for lower-end devices.

Base ~140 MB Balanced speed and accuracy. Good general use. Use on devices with moderate performance.

Pro ~460 MB Highest accuracy. Recommended for music/accented audio. High-end devices recommended.

Characters Per Chunk The max characters visible per line (default is 14 for TikTok-style captions).

Speech AI Engine 0%

Initializing model download...

✓ Transcription Finished!

Subtitles have been generated successfully. You can download the raw SRT file, or send it directly to the video renderer to burn them into a video.

Greenscreen Subtitle Renderer

Subtitle File (.srt) Upload an SRT file manually, or use the auto-generated captions from the previous step.

📝 Drag & drop your SRT file, or click to browse Only .srt format is supported

Custom Font (Optional) Bake captions in your own brand typography. Supports .ttf, .otf, .woff.

Using default (Poppins) Choose Font File

Video Width (Pixels) Controls the width of the generated greenscreen overlay video (height is automatically proportional).

1000px

FFmpeg Canvas Renderer 0%

Idle

🎬 Render Preview