Video Converter
Convert videos to MP4, WebM, MOV, GIF or extract audio as MP3. Runs in your browser — no upload, free.
Drop a video file or click to browse
MP4, MOV, AVI, WebM, MKV, FLV, WMV, 3GP…
Output Format
Quality
All processing happens in your browser — your video never leaves your device.
About Video Converter
Video format compatibility is a persistent challenge. iPhones record in MOV (H.264) or HEVC (.hevc) containers. Android devices use MP4. Screen recorders often output WebM. Editing software exports ProRes or DNxHD files that are too large to share. And GIF remains the only truly universal format for short looping animations in contexts where video is not supported.
Our Video Converter runs FFmpeg compiled to WebAssembly, enabling full video format conversion entirely in your browser without any server. Convert MOV files from Apple devices to MP4 for universal playback, extract the audio track as MP3 from any video, create GIF animations from short video clips, or convert WebM screen recordings to widely-compatible MP4. The entire process — including codec encoding and container muxing — runs locally on your device.
No video is ever uploaded to a server. This is important for recorded meetings, personal videos, client work, and any footage that should not leave your device. The trade-off is processing time: FFmpeg WebAssembly runs slower than native FFmpeg, so large files take longer. Progress is shown in real time so you can track the conversion.
How to Use Video Converter
- 1Click "Choose Video" and select any video file — MP4, MOV, WebM, MKV, AVI, and more.
- 2Select the output format — MP4, WebM, MOV, GIF, or MP3 for audio-only extraction.
- 3For GIF conversion, set the start time, duration, and frame rate for the animated clip.
- 4Click "Convert" and monitor the progress bar as FFmpeg processes the file locally.
- 5Click "Download" once conversion completes to save the output file.
Use Cases
- →Convert a MOV file recorded on an iPhone to MP4 for universal playback across all devices
- →Extract the audio track from a video as an MP3 for podcast editing or music projects
- →Create an animated GIF from a short video clip for use in documentation or social media
- →Convert a WebM screen recording to MP4 for sharing via email or uploading to platforms
- →Convert HEVC/H.265 video to H.264 MP4 for compatibility with older devices and players
- →Prepare video files in the correct format for a specific video hosting or sharing platform
Tips
- ✓MP4 (H.264) is the most compatible output format for sharing, streaming, and playback across all devices
- ✓GIF conversion works best on short clips under 10 seconds to keep output file sizes reasonable
- ✓Reducing the GIF frame rate to 10–15 fps significantly reduces file size with minimal visual impact
- ✓Audio extraction to MP3 is one of the fastest operations since it skips video re-encoding
- ✓Large video files may take several minutes to process — the conversion runs entirely in your browser
- ✓WebM format is ideal for web-embedded video — it uses efficient VP9 or AV1 encoding
Frequently Asked Questions
Input: any format your browser can decode — MP4, WebM, MOV, AVI, MKV, FLV, and most common formats. Output: MP4 (H.264), WebM (VP8), MOV, GIF (animated, silent), and MP3 (audio only).
No. All conversion runs in your browser using FFmpeg compiled to WebAssembly. Your video file never leaves your device.
The first run downloads the FFmpeg WebAssembly engine (~25 MB) from a CDN. Your browser caches this automatically, so subsequent conversions start immediately.
High (CRF 18): large file, best visual quality. Medium (CRF 23): balanced — recommended for most uses. Low (CRF 30): smallest file, lower quality.
GIF is limited to 256 colors and has no audio. GIF files are typically much larger than equivalent video files — use WebM or MP4 for animated content on websites.
Select MP3 as the output format. The converter will extract the audio track and encode it as an MP3 file at 192 kbps. All video data is discarded.