从视频中提取帧
免费在线帧提取器
免费将 MP4、MOV 和 WEBM 视频的每一帧提取为 JPG 或 PNG 图像。所有处理都在浏览器中本地进行 — 您的文件永远不会被上传。
将视频转换为图像序列
将每一帧提取为高分辨率 PNG 或 JPG 图像
100% 私密 · 基于浏览器
您的视频文件永远不会离开您的电脑。所有帧提取都在本地的 WebAssembly 浏览器流水线中完成。
即时 ZIP 下载
所有提取的帧图像都会归档为一个压缩的 ZIP 文件，支持一键快速下载。
无限制 · 零成本
永久免费，无文件大小限制、无水印、无需注册账户。
Local, Secure Video Decoding
Most online frame extraction services require you to upload massive video files to their cloud servers, which is slow and exposes your data. Our tool leverages WebCodecs and canvas decoding to process files directly inside your browser. No files are uploaded, keeping your video private and making extraction fast.
How to Extract Frames from Video Online
- 1
Upload your video file
Drag and drop or click to select your MP4, MOV, or WEBM video.
- 2
Choose JPG or PNG output
Select JPG for smaller images or PNG for lossless quality frames.
- 3
Select frame extraction settings
Select how many frames per second to extract using the FPS slider.
- 4
Start the conversion
Click "Extract Frames Now" and watch the local decoding progress.
- 5
Download your frames
Download individual snapshots or get all frames as a single ZIP file.
Supported Video Formats
Best supported: MP4, MOV, and WEBM. Other formats such as AVI or MKV may work only when your browser supports the video codec.
MP4
Best Supported
MOV
Best Supported
WEBM
Best Supported
AVI
Codec Dependent
MKV
Codec Dependent
⚠️ Browser Processing Notice
No server upload required. Processing happens in your browser, so large files depend on your device memory, browser performance, video length, and codec support. Heavy 4K files or high FPS extraction sequences can exceed browser memory bounds. If the tab freezes, close background tabs and run extraction with a lower FPS.
Troubleshooting Common Issues
Worker/Decoder Failed to Start
If your video contains a codec not supported natively by WebCodecs, the application will automatically fall back to legacy rendering. For best performance, encode your video as an H.264 MP4.
ZIP File Generation Fails
If you extract thousands of frames, compiling them into a ZIP archive can exceed browser memory bounds. Reduce your FPS selector to create a smaller, more manageable sequence.
Extract a Frame Every N Seconds
Prefer evenly spaced stills over a fixed frame rate? These presets capture one frame at a fixed time interval — perfect for timelapses, contact sheets, and thumbnail hunting.
More Free Online Frame Extractors
Frequently Asked Questions
How do I extract frames from a video?▼
Load your video above, choose your output format (JPG or PNG), choose your FPS settings, and click Extract. Your extracted frames will display in a grid and can be downloaded as a ZIP.
How do I extract a frame at an exact timestamp from a video?▼
Use our precise timestamp control panel. Play your video, pause at the exact moment you need, and click the "Capture Frame" button to extract that specific frame. The system supports millisecond-level precision for exact frame capture.
Can I extract frames from a video for AI dataset training?▼
Yes! Our tool is perfect for AI datasets. Extract hundreds or thousands of frames from MP4, MOV, or WEBM videos locally in your browser with custom FPS controls. Download all frames as a ZIP file for training machine learning models. Processing happens entirely in your browser, keeping your data private.
What video formats support exact frame extraction with the highest quality?▼
MP4, MOV, and WEBM formats are best supported with native browser codec decoding for optimal extraction quality. Other formats like AVI or MKV may work if your browser supports their specific codecs.
How much system memory do I need for browser-based frame extraction?▼
For smooth 1080p video extraction at standard FPS (24-30), you’ll need at least 4-8GB of RAM. For 4K video or higher FPS extraction, 8-16GB of RAM is recommended. If you encounter memory issues, try extracting at lower FPS rates or close other browser tabs.
What is a video frame extractor?▼
A video frame extractor decodes video files and saves individual frame buffers as separate, downloadable image files. It processes video streams locally in your browser using WebAssembly and Canvas APIs, keeping your data private while providing flexible frame rate control.
Is there a file size limit for frame extraction?▼
No server upload required. Processing happens in your browser, so large files depend on your device memory, browser performance, video length, and codec support. Browser memory limits typically range from 1GB to 4GB for video processing.
Should I export frames as JPG or PNG?▼
Use JPG for smaller file sizes and fast downloads. Use PNG if you require lossless quality or need to preserve transparency (alpha channel) for compositing work in video editing or VFX pipelines.