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Video to WebM
Re-encode a video as WebM at a chosen resolution and bitrate, right inside your browser.
Re-encode a video as WebM
Video: —
Source: —
Progress: 0%
Status: Waiting for a video
How to use the Video to WebM
- Choose the video you want to convert and wait for it to load.
- Pick an output height and a bitrate, then click Start export.
- Let the clip play through and click Download WebM when it finishes.
Features
- Re-encodes to WebM with MediaRecorder
- Chosen output height and bitrate
- Live progress while it records
- Sound is kept when the browser allows it
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Frequently Asked Questions
Common questions about the free online video to webm.
Choose your video, pick an output height and bitrate, then click Start export. The clip
re-records through a canvas and downloads as a WebM file.
Browsers cannot encode faster than real time with MediaRecorder, so the clip plays through
once while the canvas stream is recorded frame by frame.
Yes where the browser supports routing the video sound into the recorder. If it does not, the
export contains the picture track only.
Yes. Choose a lower output height such as 720p or 480p and a lower bitrate, which cuts the
file size while keeping the clip watchable.
WebM stores VP8 or VP9 video in a Matroska container, while MP4 usually holds H.264 or H.265
video and is more widely supported on older devices.
It needs MediaRecorder and canvas capture, which current versions of Chrome, Edge, Firefox
and Opera provide. Safari support is more limited.
No. The file is decoded and re-encoded entirely inside your browser, and nothing is sent to a
server at any point.
It stays in the page as a blob. The Download WebM button saves it to your usual downloads
folder with the original file name.
Last updated: October 10, 2026