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    调整视频分辨率

    调整视频分辨率 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
    WebM
    AVI
    MOV
    MKV

    使用方法

    1

    步骤 1

    上传视频

    2

    步骤 2

    选择新的分辨率

    3

    步骤 3

    下载调整后的视频

    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

    视频在本地处理。不会上传文件。

    调整分辨率 — 4K、1080p、720p、480p

    根据需要轻松切换 4K、1080p、720p 或 480p,放大或缩小,针对 HD 或 SD 质量,并优化文件以便流媒体、移动设备或电子邮件共享。在保持宽高比和视觉质量的同时调整分辨率。

    也试试我们的工具: 在线调整视频大小.

    技术细节

    选择精确的像素分辨率——UHD (4K), 全高清 (1080p), 高清 (720p)——通过放大提高清晰度,或通过缩小获得更小的文件。

    Why choose our online resolution adjuster

    Our online resolution adjuster 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 adjust video resolution without installing heavy software like HandBrake, Adobe Media Encoder or VLC.

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

    Our resolution adjuster 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

    该工具提供六种固定分辨率:360p(640×360)、480p(854×480)、720p HD(1280×720)、1080p Full HD(1920×1080)、1440p QHD(2560×1440)和2160p 4K Ultra HD(3840×2160)。所有处理都在浏览器本地完成,视频不会上传到任何服务器。

    会的:降低分辨率会减少需要编码的 pixels 数量,从而缩小文件体积;提高分辨率则会使文件变大。

    不能,放大(upscaling)只是把画面拉大,并不会增加真实的细节——将 480p 视频转换为 4K 后画面依然模糊。要真正提升画质,需要原始素材本身就是高分辨率拍摄的。

    会——该工具会将视频精确缩放到您选择的尺寸,并不会自动保留原始画面比例,也不会添加黑边。为避免变形,请选择宽高比例与您视频一致的分辨率(例如,手机拍摄的竖屏视频只有在选择竖屏分辨率时才能正常显示)。

    Downscaling (e.g. 4K → 1080p) is visually lossless for most screens. Going from 1080p to 720p stays acceptable for web/mobile use. Upscaling (e.g. 720p → 4K) is possible but doesn't invent details — the result is slightly blurry. Always prefer working at native or below.
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    调整视频分辨率 在线 | Convertly Video - 高速