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更改影片格式 - 免費線上影片轉換器

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透過快速、免費、基於瀏覽器的處理，在線上在 MP4、WebM、AVI、MKV 等之間轉換影片。
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Change the format of any video file directly in your browser. This free online video converter lets you quickly convert videos between popular formats like MP4, WebM, AVI, MKV and more without installing software.

Free online video format converter

Use this tool to change video format for playback on different devices, players, or platforms. Simply upload your file, choose the target format, and download the converted video.

Supported video formats

  • MP4 (widely supported on phones, browsers, and media players)
  • WebM (optimized for modern web browsers)
  • AVI (legacy format for older players and systems)
  • MKV (container for high-quality videos and subtitles)
  • And other common video formats depending on your source file

Key features

  • Fast conversion: High-speed processing for most video files.
  • Browser-based: Change video format online with no software installation.
  • Simple workflow: Upload, select output format, convert, and download.
  • Multiple formats: Convert between MP4, WebM, AVI, MKV and other supported formats.
  • Free to use: No registration required for standard conversions.
  • Privacy-focused: Processing is handled by urwatools.com with a clean, ad-light interface.

How to change video format online

  1. Click the upload area or drag and drop your video file.
  2. Select the output video format (for example, convert to MP4 or WebM).
  3. Start the conversion and wait for processing to finish.
  4. Download your new video file in the selected format.

Why change video format?

  • Make videos compatible with specific devices or media players.
  • Prepare files for social media platforms or websites.
  • Reduce playback issues caused by unsupported formats.
  • Standardize video formats across your library.

Secure and privacy-friendly

urwatools.com is designed for speed, clarity, and privacy. Your files are processed securely, and the interface is clean and distraction-free, making it easy to focus on converting your videos.

相關工具

從視頻中提取音頻

視訊到 GIF 轉換器

壓縮視頻

從視頻中刪除音頻

線上旋轉視頻

線上合併視訊和音訊

常見問題解答

  • 上傳視頻，選擇輸出格式，例如 MP4、WebM、AVI 或 MKV，然後開始轉換並下載轉換後的檔案。
  • 該工具支援流行的格式，包括 MP4、WebM、AVI 和 MKV。可用的輸出格式取決於您的輸入檔案和介面中顯示的轉換選項。
  • 是的。您可以直接在瀏覽器中免費變更影片格式，無需建立帳戶或安裝軟體。
  • 不。這是一個基於網路的視訊格式轉換器。所有轉換均使用 urwatools.com 介面在瀏覽器中完成。
  • urwatools.com 是一個注重隱私的平台。您的文件將被安全處理，並且該網站的設計旨在最大限度地減少不必要的資料收集。
  • 大多數常見的影片檔案都可以轉換為 MP4，手機、電腦和網路播放器都廣泛支援 MP4。上傳檔案並選擇 MP4 作為輸出格式（如果可用）。