免费在线转换视频
转换视频 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
使用方法
步骤 1
拖放视频或点击选择
步骤 2
选择输出格式（MP4、AVI、WebM.）
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
您的视频直接在浏览器中转换。不会将文件上传到我们的服务器。
将MP4转换为AVI或MOV — 免费在线，无需注册
我们的视频转换器支持所有流行格式。轻松将MP4转换为AVI以获得Windows兼容性，或将MOV转换为MP4用于网络和社交媒体。
也试试我们的工具: 免费在线压缩视频.
技术细节
我们的转换器针对每个容器（MP4, MOV, MKV, WebM），提供接近无损的选项，以忠实保留原始质量。
Why choose our online video converter
Our online video converter 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 convert video online for free without installing heavy software like HandBrake, Adobe Media Encoder or VLC.
Cross-device compatibility — PC, Mac, iPhone, Android
Our video converter 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。
相关工具
常见问题
支持哪些视频格式？
我们支持MP4、AVI、MOV、WebM、MKV、FLV、WMV和MPEG。转换过程使用优化的编解码器，能保留原始视频质量。
转换后视频质量会保留吗？
是的，我们的转换器使用优化的H.264和H.265编解码器，最大限度地保留您的视频质量，同时减小文件大小。
有文件大小限制吗？
本地处理取决于您的设备内存。通常支持高达2GB的视频。对于更大的文件，我们建议进行拆分。
YouTube或Instagram应该选择什么格式？
MP4是YouTube、Instagram、TikTok和Facebook推荐的通用格式。它与所有设备和平台都具有最佳兼容性。