Media Converter & Repair
Convert & fix videos in your browser securely.
Media Converter & Repair
Convert video to audio, compress formats, or attempt to fix corrupted video files. Processing happens securely in your own browser.
Drag & Drop Media
Supports MP4, WEBM, MKV, MP3, WAV. Max file size: 100MB (Free)
Processing Rules
Advanced Repair (moov atom)
Fix missing moov atoms. Requires a Healthy Reference Video. Max 1GB.
Free Online Video & Audio Converter (Runs in Browser)
KuchhBhi.in brings you a revolutionized media converter that doesn't upload your private family videos or sensitive audio to a random server. Powered by WebAssembly (WASM), our Media Converter & Repair Tool uses your device's own hardware to transcode files securely.
How to Fix Corrupted MP4 Videos?
Did your camera battery die while recording? Or a WhatsApp video got 0kb corrupted header? Try our Advanced Repair. It uses aggressive FFmpeg algorithms (`-err_detect ignore_err` and `+genpts`) to rebuild the file index and salvage playable frames.
- Drop the corrupted MP4 file into the box.
- Select .MP4 as output format.
- Turn ON "Advanced Repair".
- Click Start Process.
Note: If you receive a "moov atom not found" error, the file is too severely corrupted for browser-based repair. You will need a desktop tool like "untrunc" and a healthy reference video.
Fast Video to MP3 Audio Extraction
Easily convert podast videos, music clips, or lectures from MP4 or WEBM directly into high-quality MP3 or WAV audio formats without leaving this page.
Important Note on Mobile Devices
Since this runs locally, converting large videos (e.g., a 1GB movie) will drain your battery and may crash mobile browsers due to limited RAM. We currently limit free conversions to 100MB to ensure stability.
Master the Media Converter & Repair
Convert your video and audio files (MP4, WEBM, MP3, WAV, GIF) without uploading them to any server. Our WebAssembly powered engine processes the media locally on your device for 100% privacy. Includes a Deep Repair Mode to fix corrupted MP4 headers.
Perfect for...
Podcast Creators
Quickly extract high-quality MP3/WAV audio from your video recordings.
Damaged Videos
Use our Deep Repair Mode to salvage frames and fix broken MP4 headers.
Your Privacy is our Jugaad.
Unlike other tools, KuchhBhi processes everything in your browser or through encrypted real-time AI pipes. We don't store your personal texts, documents, or photos. Direct and secure.
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