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    更改视频格式

    更改视频格式 在线 直接在浏览器中以高质量处理. 立即试用此工具。 - 高速, 简单, HD画质, 精准 100% 在浏览器中本地处理,文件不会上传到服务器。立即免费试用。

    将视频拖放到此处

    支持 MP4、WebM、AVI、MOV

    支持的格式

    MP4
    AVI
    MOV
    WebM
    MKV
    FLV
    WMV

    使用方法

    1

    步骤 1

    上传视频

    2

    步骤 2

    选择新格式

    3

    步骤 3

    下载转换后的视频

    常见错误

    • Uploading a video file too large for the browser (keep it under 2 GB).
    • Closing the tab before processing finishes: the conversion stops.
    • Using an exotic input format (prefer MP4, WebM, MOV, AVI).
    • Picking a bitrate so low that quality drops noticeably.

    专业技巧

    • Pick H.264 (MP4) for the widest compatibility.
    • For the web, use WebM (VP9/AV1): smaller file at the same quality.
    • Keep the original: processing is local but the download is final.
    • On mobile, plug in the charger for long videos.

    隐私保护

    浏览器中本地处理。

    更改视频格式 — MP4、MOV、AVI、MKV、WebM

    在 MP4、MOV、AVI、MKV 和 WebM 之间转换视频容器,必要时使用兼容的编解码器(H.264、H.265、VP9)重新编码,更新元数据,并确保在每个播放器、网络浏览器、智能电视以及 iOS 或 Android 移动设备上流畅播放。

    也试试我们的工具: 免费在线转换视频.

    技术细节

    在MP4, MOV, AVI, WebM, MKV或FLV容器之间进行转换,通过可靠的转换确保与任何浏览器或设备的兼容性。

    Why choose our online format changer

    Our online format changer stands out with 100% local processing via FFmpeg.wasm directly in your Chrome, Firefox, Safari or Edge browser — no server upload, no queue, no arbitrary size limit. You get a fast, free, no-signup, watermark-free tool compatible with all your MP4, MOV, AVI, MKV, WebM, FLV, WMV, M4V, 3GP files and more. Perfect for YouTubers, TikTokers, Instagram Reels creators, Premiere Pro editors, DaVinci Resolve, CapCut, Final Cut users, marketing pros, e-learning trainers and individuals who want to change video format without installing heavy software like HandBrake, Adobe Media Encoder or VLC.

    Cross-device compatibility — PC, Mac, iPhone, Android

    Our format changer works on Windows 10, Windows 11, macOS Ventura, Sonoma, Sequoia, Linux Ubuntu, Debian, Fedora, as well as iOS 16+ (iPhone, iPad), iPadOS, Android 10+ (Samsung Galaxy, Google Pixel, Xiaomi, OnePlus) and even Chrome OS on Chromebook. No native app, no APK, no .exe to download: just open the page in your favorite browser and start processing your videos. Compatible with videos from smartphones (4K HDR, slow-motion), GoPro cameras, DJI drones, OBS screen captures, After Effects exports, Loom screencasts and files downloaded from YouTube, Vimeo, TikTok, Twitch or Twitter/X.

    Privacy, GDPR compliance and video security

    Unlike competing services (Clideo, Kapwing, Veed.io, FlexClip, Online-Convert, Convertio, CloudConvert, FreeConvert, EZGif, Zamzar) that upload your files to remote servers in the US or Asia, our tool processes your entire video in your browser's RAM. Not a single byte is sent over the Internet, ensuring full GDPR, CCPA, LGPD and HIPAA compliance. Perfect for confidential business documents, medical, legal, educational videos, copyrighted content and any personal file you do not want to entrust to any third party.

    探索所有视频工具

    只需几次点击即可压缩、转换、剪辑、调整大小和编辑视频。

    查看所有工具

    相关工具

    指南与教程

    Apprenez à utiliser nos outils avec nos guides détaillés.

    常见问题

    您可以在 MP4、WebM、AVI、MOV 之间转换:只需选择文件并指定所需的输出格式即可。所有处理都在浏览器本地完成,文件不会上传到任何服务器。

    仅更改容器格式不会降低画质,但如果新格式需要不同的编码器,系统会自动进行轻微的重新编码以确保兼容播放。在大多数情况下,肉眼几乎察觉不到差异。

    如果需要在设备、播放器和社交平台上获得最佳兼容性,请选择 MP4;如果想要更小、针对网页优化、播放更快的文件,请选择 WebM。

    是的,音轨会被完整保留,在格式转换过程中始终与视频保持精确同步,不会出现音质损失或不同步的情况。

    In "remux" mode (container change only, e.g. MKV → MP4 without changing H.264 codec), quality is strictly preserved — instant and lossless. In "transcode" mode (codec change, e.g. HEVC → H.264 for compatibility), there's a slight re-encoding loss — but imperceptible at equivalent quality.
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