⚠ Recommended file sizes: Mobile up to 500 MB • Desktop up to 1 GB. Large files require substantial memory during conversion and may fail on devices with limited resources.
@ffmpeg/ffmpeg (MIT) · @ffmpeg/core-mt (GPL-2.0-or-later)
Free online video converter for MP4, MKV, MOV, WEBM and AVI
Video Converter is an online tool for converting common video formats including MP4, MKV, MOV, WEBM and AVI. It allows users to change video formats, adjust resolution settings and choose output quality directly in the browser.
No additional software installation is required.
Support for common video formats
Video Converter supports widely used video formats across computers, mobile devices and media players.
Input formats
- MP4
- MKV
- MOV
- WEBM
- AVI
Output formats
- MP4
- MKV
- MOV
- WEBM
- AVI
These formats cover many everyday video conversion needs for storage, sharing and playback.
Video output settings
Users can adjust several settings before exporting the final video.
Resolution options
- Original
- Mobile (480p)
- HD (720p)
- Full HD (1080p)
- QHD (1440p)
- 4K (UHD)
Quality options
- Original
- High
- Medium
These settings help users select a suitable balance between video quality and file size.
Video processing on the user’s device
Video Converter runs directly in the browser.
During the conversion process, video files are processed on the user’s device. The tool does not require account registration, and converted videos can be saved immediately after processing is complete.
This gives users direct control over their video files throughout the conversion process.
How to use
- Add a video file.
- Select an output format.
- Adjust resolution or quality settings if needed.
- Click Convert Video.
- Wait for processing to finish.
- Click Export File to save the converted video.
Large file considerations
Processing time depends on available system resources, browser memory and source video complexity.
The tool is generally recommended for video files up to approximately 2 GB.
Larger files may require additional memory and longer processing times depending on the device and browser environment.
Common use cases
- Convert MP4 to MKV
- Convert MOV to MP4
- Convert WEBM to MP4
- Convert AVI to MP4
- Change video resolution
- Reduce file size by adjusting output settings
- Prepare videos for different devices
Conclusion
Video Converter is an online video conversion tool for MP4, MKV, MOV, WEBM and AVI files. It provides format conversion, resolution adjustment and quality settings directly in the browser while allowing users to manage their video files on their own device throughout the conversion process.


