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FFmpeg WebAssembly Transcoder Engine

Client-Side Video Compressor

Compress MP4, MOV, WebM, and MKV video files directly inside browser RAM. Zero server uploads guarantee 100% privacy and lightning speed.

Browser CPU & WASM Memory NoticeVideo compression requires significant CPU power and RAM. For best performance, recommend video files under 500MB. Processing takes place entirely on your device!

Drag & Drop Video Files Here

Supports MP4, MOV, WebM, AVI, and MKV. Process single or multiple videos in browser RAM.

Browse Video Files

Compressor de vídeo

Compacte vídeos MP4, MOV, WebM e MKV localmente no navegador sem perda de qualidade.

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01How to use Video Compressor

1

Drag and drop your MP4, MOV, WebM, AVI, or MKV video file into the upload dropzone.

2

Select your preferred compression quality (Low, Medium, High or custom CRF percentage).

3

Optionally downscale resolution (e.g. 720p HD or 480p SD), reduce FPS (30fps/24fps), or trim start/end times.

4

Click 'Compress Video' to start FFmpeg WASM in-memory processing with real-time percentage progress.

5

Compare original vs compressed file sizes, preview the compressed video player, and click Download.

02Key Features

100% Client-Side FFmpeg WASM

Runs FFmpeg WebAssembly inside your browser RAM. Zero server uploads guarantee absolute privacy.

Custom CRF & Format Controls

Export as MP4 (H.264) or WebM with adjustable compression sliders, resolution caps, and FPS limits.

Video Trimming & MP3 Extraction

Trim video duration to save size or extract pristine MP3 audio tracks directly.

Before/After Side-by-Side Comparison

Compare original vs compressed file sizes, percentage savings, and video playback.

04Benefits

  • Share large video files over WhatsApp, email, or web portals without hitting upload limits.
  • Keep personal home recordings and sensitive business clips 100% secure on your computer.
  • No registration, no subscription paywalls, no watermark additions.
  • Fast local processing with multi-threaded WASM hardware acceleration.

05What is Video Compressor?

ToolWala AI's Video Compressor utilizes FFmpeg compiled to WebAssembly (@ffmpeg/ffmpeg) to transcode and compress videos locally on your device CPU. Reduce video file size by up to 80% with customizable CRF quality sliders, resolution downscaling (1080p, 720p, 480p), frame rate reduction, video trimming, and MP3 audio extraction.

Support Center

Common Questions

Não. Toda a decodificação, dimensionamento, extração de áudio e codificação de vídeo ocorrem 100% localmente em seu navegador usando WebAssembly. Nenhum dado sai da sua máquina.
Como o FFmpeg é executado na memória WASM do navegador, recomendamos arquivos com menos de 500 MB para desempenho ideal e estabilidade de guias.
Os formatos de entrada incluem MP4, MOV, WebM, AVI e MKV. Os formatos de saída incluem áudio MP4 (H.264), WebM e MP3.

Final Verdict

Compress and transcode video files in seconds with complete privacy. Try ToolWala AI's browser-native Video Compressor today!