WEBM to MP4
Turn screen captures and web-streamed WEBM files into MP4 videos with stereo AAC audio.
Select a file for WEBM to MP4
Drag & drop your files here, or click to browse
Height in pixels; width follows the aspect ratio.
If the source codecs already fit the target container and no resize is requested, streams are copied without re-encoding (fast, no quality loss).
- VP8/VP9 video is re-encoded to H.264 and Opus/Vorbis audio to AAC for compatibility.
How to use WEBM to MP4
From upload to download in 3 steps.
- 1
Add your file
Choose or drag a WEBM file into the upload area (up to 1 GB each).
- 2
Adjust the settings
Optionally change the target format — the defaults work well for most files.
- 3
Convert and download
Click Convert, follow the progress, and download the result. Files are deleted from the server automatically afterwards.
Supported formats and settings
- Input formats
- WEBM
- Output formats
- MP4
- Limits
- Up to 1 GB per file
- One file per job
- Files are deleted automatically after processing
- Video Codec
- H.264 / AVC (most compatible) and H.265 / HEVC (smaller files)
- Resolution
- Original, 4K UHD (2160p), 1440p QHD, 1080p FHD, 720p HD, 480p SD and 1 more
- Video Quality
- High (larger file), Balanced (recommended) and Small file
- Audio Track
- Keep audio and Remove audio
- Copy Streams When Possible
- If the source codecs already fit the target container and no resize is requested, streams are copied without re-encoding (fast, no quality loss).
Why use our WEBM to MP4?
Genuine Processing
Real conversions by proven engines — never renamed copies or fake results.
Private by Design
Files are deleted automatically after processing and never used for training.
Free to Use
No account, no subscription and no watermarks on your files.
Frequently Asked Questions
Which file formats does WEBM to MP4 support?
WEBM to MP4 accepts WEBM files. It produces MP4.
Is there a file size limit?
Each file can be up to 1 GB. Larger files take longer to upload and process.
What happens to my files?
Files are uploaded only when you start processing. They are stored under random names in a private temporary folder, processed, and deleted automatically shortly afterwards — the exact time is shown with your result — or immediately when you click “Delete files now”. Files are never shared or used for training.
How does WEBM to MP4 work, and what are its limitations?
VP8/VP9 video is re-encoded to H.264 and Opus/Vorbis audio to AAC for compatibility.
Is WEBM to MP4 free to use?
Yes. WEBM to MP4 is free, needs no account, and does not add watermarks to your files.
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