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no re-upload

Download YouTube as WebM - same quality, less space.

WebM is what YouTube actually encodes most of its catalogue in. Taking it directly skips a conversion step and gives you VP9 video and Opus audio at a smaller size than the equivalent MP4.

Formats
Length
Video ID
Quality Container Size Delivery Get
No formats of this type are available for this video.

Preparing your file. Formats marked Merge are muxed on the server with ffmpeg, so large ones can take a minute before the browser's save dialog appears.

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Enjoy downloading :)

Resources

Every tool, one paste away

Pick by format, by quality, or by the device you are saving to. Every one runs the same engine.

14 tools

Procedure

How it works

  1. 01

    Paste the link

    WebM rows appear alongside MP4 rows in the format table.

  2. 02

    Compare the sizes

    At the same resolution, the WebM row is usually the smaller of the two.

  3. 03

    Play it in a modern player

    Chrome, Firefox, Edge and VLC handle WebM natively with nothing to install.

FAQ

WebM and VP9

What the format is, where it wins, and where MP4 is still the safer pick.

What is WebM?
An open, royalty-free container built for the web, normally holding VP9 or AV1 video with Opus audio. Google developed it and uses it as YouTube's primary delivery format, which is why so many rows in the format table are WebM.
Is WebM better than MP4?
At equal visual quality VP9 in WebM is typically 20–30% smaller than H.264 in MP4, so it wins on size and bandwidth. MP4 with H.264 wins on compatibility - it plays on essentially everything ever made. Choose by where the file is going.
What plays WebM files?
Every current desktop and mobile browser, VLC, MPV, and recent versions of Windows 11 and Android. What often cannot: QuickTime on macOS, older smart TVs, most video editors without a plugin, and some car head units.
Can I convert WebM to MP4 afterwards?
You can, but it means a lossy re-encode that costs quality and time. If you know you need MP4, download the MP4 row in the first place rather than converting - the table lists both.
Does WebM support 4K?
Yes, and above 1080p it is often the only option. YouTube uses VP9 and AV1 for high-resolution masters, so 1440p and 2160p rows are frequently WebM only.
Why is the audio in WebM called Opus?
Opus is the audio codec WebM normally carries. It is genuinely excellent - at around 130 kbps it is regarded as transparent for most listeners, which is better than an MP3 at the same bitrate.