MKV to WEBM

Convert MKV to WEBM online with a free MKV to WEBM converter.
Drop your MKV video files below to convert them to WEBM in seconds.

Or drag your images here

Looking to programmatically convert MKV to WEBM?

Sign up for our free API to convert all your videos to WEBM and other formats for optimal web delivery.

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Free MKV to WEBM Converter

Easily convert MKV to WEBM online instantly and effortlessly. No installation or plugins required. Simply drop your MKV video into our converter and receive a WEBM file in seconds with high-quality playback.

Why choose our MKV to WEBM converter?

Domain Specific AI

AI-Powered Video Transformations

Go beyond simple conversions. Transform your videos with features like Generative Fill, Object Removal, and Scene Replacement, adding flexibility and creativity to your video content.

Domain Specific AI

Video Enhancement

Enhance video quality with tools for 4K resolution, real-time filtering, and frame rate adjustment. With Cloudinary’s API, your videos look stunning and ready for any screen.

Domain Specific AI

Performance Optimization

Deliver videos in the best quality and format, adapting automatically to the user’s device, browser, and network. Automatically apply the most efficient format for seamless playback.

Domain Specific AI

Batch Convert MKV to WEBM

Use the converter to batch convert MKV to WEBM, or sign up for the free API to automatically convert all your MKV videos to WEBM!

Domain Specific AI

Workflow Automation

Create workflows that automate video processing, ensuring videos are formatted and ready for fast delivery right after upload.

Domain Specific AI

Versatile Video Format Support

Handle all major video formats: MKV, WEBM, AV1, HEVC, and more. Ensure your videos are delivered in the best format for quality and efficiency.

How to Convert MKV to WEBM

Convert MKV to WEBM in 3 simple steps, or sign up with Cloudinary to programmatically transform thousands of videos!

1. Add Your MKV Files

Upload or drag and drop your MKV videos into the browser.

2. Start Conversion

Select WEBM as your output format to begin the conversion

3. Download WEBM Videos

Once the conversion is complete, download your new WEBM files

Or sign up for an API

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Explore Beyond MKV to WEBM Conversion

A woman and a golden retriever in the mountains. They're sitting, facing away from the camera while the dog noses the woman. They're surrounded by natural splendor including majestic mountains, puffy clouds, and evergreen-studded hills.
An un-cropped image overlaid with a cropping window showing how it would be cropped by Cloudinary.
An arrow pointing from the original asset to the cropped asset
A woman and a golden retriever in the mountains. They're sitting, facing away from the camera while the dog noses the woman. They're surrounded by natural splendor including majestic mountains, puffy clouds, and evergreen-studded hills.
The same asset cropped using the following settings: Aspect Ratio: 1:2. Crop Mode: Content-Aware.
Images
Videos
Crop Mode
Aspect Ratio
Original
18 MB

We’re showing a resized version of the original asset to avoid slow loading speeds. View the original.

The original asset:
JPEG
135 KB
WebP
135 KB
AVIF
90 KB
JPEG XL
94 KB
The image after being optimized using the following settings: Quality: Auto. Width: 1000px.
Original
18 MB

We’re showing a resized version of the original asset to avoid slow loading speeds. View the original.

The original asset:
JPEG
135 KB
WebP
135 KB
AVIF
90 KB
JPEG XL
94 KB
The image after being optimized using the following settings: Quality: Auto. Width: 1000px.
Images
Videos
Quality
Width
An un-cropped image overlaid with a croppingai window showing how it would be cropped by Cloudinary.
An arrow pointing from the original asset to the cropped asset
The same asset cropped using the following settings: Aspect Ratio: 1:1. Crop Mode: Content-Aware.
Images
Videos
Crop Mode
Aspect Ratio
The original image:
An arrow pointing from the original asset to the transformed asset.
The personalized image:
The original image:
The personalized image:
Product Photos
Backgrounds
Overlays
Duration
Full length video: Surfing Trip
An arrow pointing from the original video to the AI-generated preview.
Duration
A shorter video preview generated by Cloudinary's AI using the following settings: Duration: 15 seconds. Max Clips: 9. Min Clip Length: 1 second.
Videos
Duration
Max Clips
Min Clip Length
URL:
/ar_0.5,c_fill,g_auto,w_433/q_auto/f_auto/hiking_dog_mountain.jpg
cloudinary.image("hiking_dog_mountain.jpg", {transformation: [
  {aspect_ratio: "0.5", gravity: "auto", width: 433, crop: "fill"},
  {quality: "auto"},
  {fetch_format: "auto"}
  ]})
new CloudinaryImage("hiking_dog_mountain.jpg")
  .resize(
    fill()
      .width(433)
      .aspectRatio(0.5)
      .gravity(autoGravity())
  )
  .delivery(quality(auto()))
  .delivery(format(auto()));
new CloudinaryImage("hiking_dog_mountain.jpg")
  .resize(
    fill()
      .width(433)
      .aspectRatio(0.5)
      .gravity(autoGravity())
  )
  .delivery(quality(auto()))
  .delivery(format(auto()));
new CloudinaryImage("hiking_dog_mountain.jpg")
  .resize(
    fill()
      .width(433)
      .aspectRatio(0.5)
      .gravity(autoGravity())
  )
  .delivery(quality(auto()))
  .delivery(format(auto()));
new CloudinaryImage("hiking_dog_mountain.jpg")
  .resize(
    fill()
      .width(433)
      .aspectRatio(0.5)
      .gravity(autoGravity())
  )
  .delivery(quality(auto()))
  .delivery(format(auto()));
CloudinaryImage("hiking_dog_mountain.jpg").image(transformation=[
  {'aspect_ratio': "0.5", 'gravity': "auto", 'width': 433, 'crop': "fill"},
  {'quality': "auto"},
  {'fetch_format': "auto"}
  ])
(new ImageTag('hiking_dog_mountain.jpg'))
	->resize(Resize::fill()->width(433)
->aspectRatio(0.5)
	->gravity(
	Gravity::autoGravity())
	)
	->delivery(Delivery::quality(
	Quality::auto()))
	->delivery(Delivery::format(
	Format::auto()));
cloudinary.url().transformation(new Transformation()
  .aspectRatio("0.5").gravity("auto").width(433).crop("fill").chain()
  .quality("auto").chain()
  .fetchFormat("auto")).imageTag("hiking_dog_mountain.jpg");
cl_image_tag("hiking_dog_mountain.jpg", transformation: [
  {aspect_ratio: "0.5", gravity: "auto", width: 433, crop: "fill"},
  {quality: "auto"},
  {fetch_format: "auto"}
  ])
cloudinary.Api.UrlImgUp.Transform(new Transformation()
  .AspectRatio("0.5").Gravity("auto").Width(433).Crop("fill").Chain()
  .Quality("auto").Chain()
  .FetchFormat("auto")).BuildImageTag("hiking_dog_mountain.jpg")
cloudinary.image('hiking_dog_mountain.jpg').transformation(Transformation()
	.resize(Resize.fill().width(433)
.aspectRatio(0.5)
	.gravity(
	Gravity.autoGravity())
	)
	.delivery(Delivery.quality(
	Quality.auto()))
	.delivery(Delivery.format(
	Format.auto())));
imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation()
  .setAspectRatio("0.5").setGravity("auto").setWidth(433).setCrop("fill").chain()
  .setQuality("auto").chain()
  .setFetchFormat("auto")).generate("hiking_dog_mountain.jpg")!, cloudinary: cloudinary)
MediaManager.get().url().transformation(new Transformation()
  .aspectRatio("0.5").gravity("auto").width(433).crop("fill").chain()
  .quality("auto").chain()
  .fetchFormat("auto")).generate("hiking_dog_mountain.jpg");
cloudinary.image('hiking_dog_mountain.jpg').transformation(Transformation()
	.resize(Resize.fill().width(433)
.aspectRatio(0.5)
	.gravity(
	Gravity.autoGravity())
	)
	.delivery(Delivery.quality(
	Quality.auto()))
	.delivery(Delivery.format(
	Format.auto())));
cloudinary.image {
	publicId("hiking_dog_mountain.jpg")
	 resize(Resize.fill() { width(433)
 aspectRatio(0.5F)
	 gravity(
	Gravity.autoGravity())
	 })
	 delivery(Delivery.quality(
	Quality.auto()))
	 delivery(Delivery.format(
	Format.auto())) 
}.generate()
new CloudinaryImage("hiking_dog_mountain.jpg")
  .resize(
    fill()
      .width(433)
      .aspectRatio(0.5)
      .gravity(autoGravity())
  )
  .delivery(quality(auto()))
  .delivery(format(auto()));
GET STARTED
GET STARTED
GET STARTED
GET STARTED

Frequently Asked Questions

Get Answers to Your Questions About Our Chat Software and Features

MKV, or Matroska Video, is a flexible multimedia container format that can hold a variety of audio, video, and subtitle tracks within a single file. The .mkv file extension is commonly associated with this format. MKV is designed to be an open standard, which means it is free to use and can be implemented by developers without any licensing fees.

Key Features of MKV:

    • Multiple Tracks: MKV files can contain multiple video, audio, and subtitle tracks, allowing for features like multi-language support and different audio options (e.g., commentary tracks).
      High Quality: MKV supports high-definition video and various codecs, making it suitable for high-quality video storage, including HD and 4K content.
      Rich Metadata: MKV files can include extensive metadata, such as chapter information, cover art, and descriptive tags, which enhances the organization and navigation of media content.
      Error Resilience: MKV is designed to handle data loss more gracefully than some other formats, making it a good choice for streaming.
      Compatibility: While MKV is supported by many media players and devices, it may require specific codecs or players (like VLC or Kodi) to play back correctly.
      Streaming Support: MKV files can be streamed over the internet, which is beneficial for online video services.

    • Common Use Cases:

    • Video Distribution: MKV is popular for distributing movies and TV shows, particularly in the realm of pirated content due to its ability to package high-quality video and audio.
      Home Media: Many home theater systems and media servers support MKV for playing back movies with multiple audio tracks and subtitles.
      Archiving: Its ability to store high-quality video and multiple audio/subtitle tracks makes MKV an excellent format for archiving media collections.

    • Overall, MKV is a versatile and widely used format that caters to various multimedia needs, particularly for high-quality video storage and playback.

    WebM is an open, royalty-free multimedia format primarily designed for use on the web. It was developed by Google to deliver high-quality video and audio content in a way that is optimized for online streaming, fast loading, and low computational requirements. Files with the .webm extension use VP8 or VP9 codecs for video and Vorbis or Opus codecs for audio.

    Key Features of WebM

    • Web-Optimized: WebM is specifically optimized for the internet, making it lightweight and efficient, so it loads quickly even on slower connections. This efficiency makes it a popular choice for websites, online video hosting, and streaming platforms.
      Open and Royalty-Free: WebM is open-source and royalty-free, meaning it’s free to use, modify, and distribute. This aligns with web standards and is supported by many browsers and media players, especially since Google promoted it as an alternative to proprietary formats like MP4 (H.264).
      Compatibility with HTML5: WebM is natively supported in HTML5, which allows it to be embedded directly into web pages without requiring additional plugins. It’s compatible with modern web browsers, including Google Chrome, Firefox, Edge, and Opera, which makes it ideal for web applications.
      Efficient Compression: Using VP8 and VP9 for video and Vorbis or Opus for audio, WebM provides efficient compression without sacrificing much quality. This makes it ideal for streaming platforms, where file size and bandwidth efficiency are important for playback quality.
      Widespread Use: WebM is widely used by platforms like YouTube for video streaming and is compatible with a range of online and offline media players, such as VLC and MPlayer.

    • Advantages and Limitations

  • Advantages: WebM files are generally smaller in size compared to other formats, making them ideal for streaming and embedding on websites. It’s also free from licensing fees, encouraging broader use.
    Limitations: While it’s highly compatible with web browsers, WebM may not be supported by all devices and media players, especially older hardware or software without WebM codec support.
    WebM is a popular format for online video and audio streaming, balancing quality and efficiency to deliver a seamless experience on the web.

    • 1. Select MKV File

    Gather all the MKV videos you wish to convert and upload or drag and drop them into a batch conversion tool like Cloudinary.

    2. Choose WEBM as Output Format

    In the converter, select WEBM as the output format for your videos.

    3. Start the Conversion

    Begin the batch conversion process. The tool will automatically convert all selected MKV videos to WEBM.

    4. Download Converted Videos

    Once the batch conversion is complete, download the converted WEBM files directly to your device.

     

    To streamline the process, sign up for Cloudinary’s API to automate video conversions and easily transform any format into WEBM or other video formats.