Video to WebM Converter

Conversion Settings

File List 0

Please select a video file to convert to WebM

Supports AVI, MKV, MOV, WMV, FLV, MP4, and more

Instructions:

Supported Input Formats:

  • MP4:Most common video formats with excellent compatibility
  • AVI:Classic video formats with good compatibility
  • MKV:High-quality container format, supports multiple audio tracks and subtitles
  • MOV:Common formats for Apple devices
  • WMV:Windows Media Video formats
  • FLV:Flash Video formats
  • MPEG / MPG:Standard video formats
  • 3GP:Mobile device video formats
  • TS:Transport stream formats
  • M4V:Apple video formats

Video quality description:

  • Low quality (CRF 35):Suitable for scenarios with low image quality requirements, smallest file size
  • Medium quality (CRF 30):Balances image quality and file size
  • High quality (CRF 25):Image quality close to the original video, recommended choice
  • Very high quality (CRF 20):Near lossless quality, larger file size

Resolution description:

  • 480p:Standard definition, suitable for mobile devices
  • 720p:High definition, suitable for regular viewing
  • 1080p:Full HD, recommended choice
  • 1440p:2K,High-quality viewing
  • 2160p:4KUltra HD, requires larger storage space

Features:

  • Supports batch conversion of multiple video files
  • Customizable video quality, resolution, and frame rate
  • Adjustable audio bitrate or option to remove audio
  • Outputs open WebM format (VP9 + Opus)

WebMFormat advantages:

  • Open-source and free, no patent licensing fees
  • Designed for the web, natively supported by all modern browsers
  • VP9High encoding compression efficiency, smaller file size at the same quality
  • Ideal for embedding videos on web pages and streaming

Use cases:

  • Convert videos to web-compatible formats for online playback
  • Upload to platforms that support WebM (e.g., YouTube)
  • Compress videos for faster webpage loading
  • Use within HTML5 video tags

How to use:

  1. Select one or more video files to convert
  2. Set video quality (default is high quality)
  3. Adjust resolution and frame rate as needed
  4. Select audio bitrate or remove audio
  5. Click"Start Conversion"button
  6. Wait for the conversion to finish, then download the WebM file

Note:WebMThe format uses VP9 video encoding and Opus audio encoding, an open format designed specifically for the web. All major browsers (Chrome, Firefox, Edge, Safari) natively support WebM playback.