How do I play an WEBM file?

VLC, MPV and PotPlayer play nearly every WEBM file on desktop. Browser support varies: modern Chromium, Firefox and Safari play common containers via the HTML5 tag, but niche WEBM variants may fail. If a device refuses your WEBM, convert to MP4 with our WEBM to MP4 converter for universal playback.

How do I reproduzir an WEBM file?

VLC, MPV e PotPlayer reproduzir nearly every WEBM arquivo on desktop. Browser support varies: moderno Chromium, Firefox e Safari reproduzir common containers via the HTML5 tag, mas niche WEBM variants may fail. If a device refuses your WEBM, converter to MP4 com our WEBM to MP4 converter para universal playback.

WEBM vs WMA — Differences, File Size & When to Use Each

WEBM vs WMA

A detailed comparison of WebM Video and Windows Media Audio — file size, quality, compatibility, and which format to choose for your workflow.

Convert WEBM → WMA

WEBM

WebM Video

Video Files

WebM is an open, royalty-free media format developed by Google. It uses VP8/VP9 video with Vorbis/Opus audio and is natively supported by all major web browsers for HTML5 video.

About WEBM files

WMA

Windows Media Audio

Audio Files

WMA is a proprietary Microsoft audio format from the Windows Media framework. Once common in the Windows ecosystem, it has been largely replaced by AAC and MP3 for general use.

About WMA files

Strengths Comparison

WEBM Strengths

Patent-free and royalty-free — no licensing worries for encoders.
First-class HTML5 <video> support across browsers.
AV1 inside WebM offers best-in-class compression (30-50% smaller than H.264).
Low overhead — the container strips everything MKV does not need.
Powered by battle-tested libvpx and dav1d reference decoders.

WMA Strengths

Good quality at low bitrates (32-64 kbps) — outperformed MP3 in that range.
Native playback on every Windows version 2000 through 10.
Lossless variant available (WMA Lossless) for archiving.
Supports multichannel 5.1 surround audio.

Limitations

WEBM Limitations

Limited codec palette — cannot carry H.264 or HEVC streams.
Encoding AV1 or VP9 at quality is slow.
Hardware decoders for AV1 are still catching up on older devices.
Professional video tools (Final Cut, Premiere) do not export WebM natively.

WMA Limitations

Proprietary — poor support outside Windows and Windows Media Player.
DRM variants made files brittle — many purchased tracks became unplayable when stores shut down.
Ecosystem abandoned — no modern editors, hardware decoders, or streaming services use WMA.
Windows 11 deprecated Windows Media Player entirely.

Technical Specifications

Specification	WEBM	WMA
MIME type	video/webm	audio/x-ms-wma
Extension	.webm	.wma
Container	Matroska subset	ASF (Advanced Systems Format)
Video codecs	VP8, VP9, AV1	—
Audio codecs	Vorbis, Opus	—
Variants	—	WMA Standard, WMA Pro, WMA Lossless, WMA Voice
Max bitrate	—	768 kbps (WMA Pro)

Typical File Sizes

WEBM

Short web clip (1080p VP9, 1 min) 15-30 MB
YouTube 1080p AV1 (1 min) 12-20 MB
Animated sticker (VP9, transparent) 200-800 KB

WMA

3-min song (128 kbps) 3 MB
3-min song (Lossless) 25-35 MB
1-hour talk (64 kbps) 28 MB

Ready to convert?

Convert between WEBM and WMA online, free, and without installing anything. Encrypted upload, automatic deletion after 60 minutes.

Convert WEBM to WMA

Frequently Asked Questions

WEBM (WebM Video) is a video container format that bundles one or more video streams, audio tracks, and optional subtitles into a single file. The container format determines how metadata is organised and which codecs can live inside; the visual quality itself depends on the codec (H.264, H.265, VP9, AV1) rather than the WEBM wrapper. It is part of the video files family.

WEBM (WebM Video) is a video container formato that bundles one ou more video streams, audio tracks, e optional subtitles em a single file. The container formato determines how metadata is organised e which codecs can live inside; the visual quality itself depende de the codec (H.264, H.265, VP9, AV1) em vez de the WEBM wrapper. It is part of the video arquivos family.

VLC, MPV and PotPlayer play nearly every WEBM file on desktop. Browser support varies: modern Chromium, Firefox and Safari play common containers via the HTML5 <video> tag, but niche WEBM variants may fail. If a device refuses your WEBM, convert to MP4 with our WEBM to MP4 converter for universal playback.

VLC, MPV e PotPlayer reproduzir nearly every WEBM arquivo on desktop. Browser support varies: moderno Chromium, Firefox e Safari reproduzir common containers via the HTML5 <video> tag, mas niche WEBM variants may fail. If a device refuses your WEBM, converter to MP4 com our WEBM to MP4 converter para universal playback.

Upload your WEBM to KaijuConverter and pick MP4, MOV, MKV, WebM, or any other target. Our pipeline uses FFmpeg under the hood and stream-copies when codecs are compatible (no quality loss) or transcodes at high-quality defaults otherwise. Conversion runs server-side; both files delete within two hours.

Only when the target requires re-encoding. If the codecs inside WEBM match what the target container supports, FFmpeg stream-copies the streams and the output is bit-identical to the source. Transcoding uses transparent quality defaults (CRF 20–23 H.264) and produces output indistinguishable from the original at normal viewing distance.