Convert MKV to WEBM offline by JavaScript

Convert MKV to WEBM offline

Convert local MKV files to WEBM files offline by JavaScript in your web browser without any software downloads or file uploads!

Files:

Target:

Options:

Video size:

Video bitrate:

Frame Rate:

Aspect ratio:

Audio bitrate:

Mute:

Remove all audio streams

Show conversion logs

OUTPUT FILES:

#	File Name	File Size	Actions

How to convert MKV to WEBM offline

Choose local MKV video files, choose "WEBM" as target video format, then click the "CONVERT OFFLINE" button to start offline conversions in bulk. File size can be up to 2GB. Please note this offline audio converter only works in web browsers that support new technologies such as WebAssembly, Shared Array Buffer and Site Isolation.

Name	MKV	WEBM
Full name	Matroska Video	HTML5 Video
File extension	.mkv, .mk3d, .mka, .mks	.webm
MIME	video/x-matroska, audio/x-matroska	video/webm, audio/webm
Developed by	www.matroska.org	Google
Type of format	Container format	Video file format
Introduction	The Matroska Multimedia Container is an open standard free container format, a file format that can hold an unlimited number of video, audio, picture, or subtitle tracks in one file. It is intended to serve as a universal format for storing common multimedia content, like movies or TV shows.	WebM is a video file format. It is primarily intended to offer a royalty-free alternative to use in the HTML5 video tag. It has a sister project WebP for images. The development of the format is sponsored by Google, and the corresponding software is distributed under a BSD license.