Video Converter
Convert videos between MP4, WebM, MKV, and MOV formats. Hardware-accelerated encoding. Tell us your use case and we'll pick the best settings.
Quick recommendation
Choose MP4 + H.264 when you need the widest compatibility. WebM is a good choice for modern websites and smaller downloads.
1. Add your videos
Drop one or more files here. You can add more before starting the batch.
Drop videos here or click to browse
MP4, MOV, WebM, MKV, AVI — até 2GB
Processed locally
Your files stay in this browser. MediaBunny runs the conversion in local Web Workers, so nothing is sent to a server.
What are you using this for?
Pick a common goal to apply a practical format, codec, and quality preset in one click.
What are you using this for?
You might also need
compress-video
Compress video with hardware acceleration — até 5× faster than traditional tools. Os arquivos permanecem no seu navegador. Choose a platform preset or customize.
trim-video
Cut videos to a precise time range no seu navegador. Fast mode prioritizes speed, while Precise mode supports frame-accurate trimming. Preview before you save and process multiple files in one batch.
resize-video
Change video resolution with smart fit modes. Preset sizes for YouTube, TikTok, Instagram, and more. Hardware-accelerated, sem upload needed.
convert-audio
Convert audio between MP3, WAV, AAC, FLAC, Opus, OGG and more. Escolha uma predefinição para o seu caso de uso or customize configurações de qualidade — tudo no seu navegador.
Video format guide
Convert between the formats people use most
Convert common camera, phone, screen-recording, and downloaded videos no seu navegador. Choose the container based on where the finished file will be played or shared.
mp4
Most compatible
Best default for phones, social platforms, presentations, and general sharing.
webm
Web delivery
A modern browser-friendly container, often useful when download size matters.
mkv
Flexible archive
Useful when you want a flexible container for multiple tracks and high-quality storage.
mov
Apple workflows
A practical choice for QuickTime, Final Cut, and Apple-oriented workflows.
How to convert a video online
The complete workflow runs no seu navegador and the result is ready to preview antes de baixar.
- 01
Add a video
Drop an MP4, MOV, WebM, MKV, AVI, or another supported video file into the converter. Batch conversion is available too.
- 02
Choose the output
Select a target container, compatible codec, quality level, frame rate, or custom dimensions. Use a use-case preset if you are unsure.
- 03
Convert and download
Start the local conversion, preview completed files, retry individual failures, and download one file or a ZIP batch.
Common video conversion scenarios
The right output depends on the destination. These practical defaults cover the most common reasons people convert a video.
Maximum compatibility
Use MP4 with H.264 when the video must work across browsers, phones, messaging apps, and presentation software.
Website and landing page
Use WebM for modern web playback, or MP4 when you need a reliable fallback for a broader range of devices.
Phone and social sharing
Choose MP4 with a lower quality preset for smaller uploads. HEVC can save space on newer devices, but is less universal.
Storage and archive
Choose MKV and a higher quality preset when preserving detail and multiple media tracks matters more than file size.
Your videos stay no seu dispositivo
The browser reads your files and passes them to local Web Workers powered by MediaBunny. The source and converted video are not uploaded to MediaKit servers. Remover arquivos or close the tab when you are done to release local object URLs.
FAQ
Perguntas frequentes
Are my videos uploaded?
No. Conversion runs no seu navegador with MediaBunny and Web Workers. The selected files are not sent to a MediaKit server.
Which input and output formats are supported?
You can add common formats including MP4, M4V, MOV, WebM, MKV, AVI, WMV, FLV, 3GP, MTS, M2TS, TS, OGV, DIVX, and XVID. Outputs are MP4, WebM, MKV, and MOV.
Should I choose MP4 or WebM?
Choose MP4 for the widest compatibility. Choose WebM for modern browsers and web delivery when a arquivo menor is more important than legacy device support.
Will converting reduce video quality?
Re-encoding can change quality. Start with Medium or High, keep the original resolution when possible, and preview the result before sharing it.
How large can a video be?
Each input video can be até 2 GB. Large files need enough free memory and may take longer on phones or older computers.
Can I convert videos on a phone?
Yes, on a current browser. Keep the page open during encoding and choose a lower quality or resolution if the device becomes warm or runs low on memory.
Learn more
Related video guides and tools
MP4 vs WebM: which format should you use?
Compare compatibility, browser playback, codecs, and file size before choosing a web video format.
Read guideHow to reduce video size without losing visible quality
Understand the trade-offs between resolution, bitrate, frame rate, and output quality.
Read guide