webm

.webm — WebM Video Format

Google · 2010

開発者

Google

カテゴリ

動画

MIMEタイプ

video/webm

初回リリース

2010

オープンフォーマット

はい

ファイルシグネチャ

1A 45 DF A3

.webmファイルとは？

WebM is an open-source video format developed by Google, designed for efficient video delivery on the web. WebM uses VP8/VP9 video codecs and Vorbis/Opus audio codecs, providing good quality at smaller file sizes than many alternatives. It is the default format for HTML5 video in Chromium-based browsers and is widely used on platforms like YouTube for adaptive streaming.

.webmファイルを開くプログラム

プラットフォーム	プログラム
Windows	VLC Media Player	無料
	Google Chrome	無料
macOS	VLC Media Player	無料
	Google Chrome	無料

.webmファイルのよくある問題

⚠️ Cannot open .webm file

Install one of the recommended programs listed above. For a free option, try the first free program in the list.

⚠️ .webm file is corrupted

Try re-downloading the file. If the file was transferred, ensure the transfer completed without errors.

よくある質問

What program opens .webm files?▼

.webm files can be opened with several programs. VLC Media Player is one of the most popular choices.

Is .webm a safe file format?▼

Generally yes, .webm files are safe to open with appropriate software.

Can I convert .webm to another format?▼

Yes, there are many online and offline tools available to convert .webm files. Check the conversion section above for specific methods.

技術詳細

WebM Video Format files use the video/webm MIME type and were first introduced in 2010 by Google. The file can be identified by its signature: 1A 45 DF A3.

豆知識

WebM Video Format was first released in 2010 by Google

セキュリティ情報

.webm files are generally safe to open. However, always ensure your software is up to date to protect against potential vulnerabilities.