Free 4K Video Frame Extractor (Native 3840x2160 UHD Resolution)
Pull uncompressed 8.3-megapixel still photos from 4K UHD & DCI 4K 60fps videos (DJI drones, GoPro, iPhone, Sony/Canon) right in your browser, instant local loading, zero upload.
動画ファイルをドロップ、または ファイルを選択
MP4 · MOV (ProRes/HEVC) · WebM · MKV · AVI · M4V - サーバーアップロード制限なし
Exact PTS Frame-Lock (WebCodecs / requestVideoFrameCallback) · Zero Skipped Frames across CFR & VFR · No server upload (GPU/RAM-bound)
Workbench Controls & Pro Modes Preview (Single Frame · Batch ZIP · Contact Sheet · FFmpeg CLI)Specs▾
ffmpeg -ss 00:00:00.000 -i "input.mp4" -frames:v 1 -q:v 1 frame_0001.pngHTMLVideoElement.requestVideoFrameCallback((now, metadata) => ...) verifying metadata.mediaTime and metadata.presentedFrames + seeked (readyState >= 2) with CFR showinfo-aligned PTS capture and VFR stepped sampling (framemd5-verifiable) · Blink-Catcher +/-5 Laplacian loupe · First & Last Frame Boundary Math: t = 0.000s & duration - 1/fps · Math.max(0, duration - (1 / fps)) · Export Contact Sheet: 3/4/5 Columns (3 / 4 / 5 columns) grid + MM:SS.mmm Timestamp watermark toggle + single composite PNG/JPEG download.Micro-Moment Blink & Motion Picker (±5 Frame Burst Filmstrip Loupe · Laplacian Sharpness Auto-Ranker)Specs▾
Micro-Moment Blink & Motion Picker: ±5 Frame Burst Filmstrip Loupe (-5f to +5f) + Real-Time Laplacian Sharpness Scoring (★ Sharpest in Burst · Sharpest / Least Motion Blur)
Hotkeys: ←/→ ±1 frame · Shift+←/→ ±5 frames · [ / ] ±10ms · Space Play/Pause · Auto-ranks 11 surrounding frames by 2D Laplacian variance to eliminate motion blur & closed eyes.
Verified Engineering Bounds: Browser WebCodecs / rVFC vs. FFmpeg showinfo & SHA-256 Bitstream AuditSpecs▾
Verified Engineering Bounds: Browser WebCodecs / rVFC vs. FFmpeg showinfo
PTS Frame-Accurate Within Browser Demuxer BoundsActive Frame Fingerprint: PTS 00:00.000 · SMPTE 00:00:00:00 · Frame #0 · Checksum sha256:e3b0c442
ffmpeg -ss 00:00.000 -i "input.mp4" -frames:v 1 -f framemd5 -Stream PTS Audit: ffprobe -v error -select_streams v:0 -show_entries frame=n,pkt_pts_time,pict_type -of csv| Benchmark Workload | Browser rVFC / WebCodecs Result | FFmpeg / ffprobe Reference |
|---|---|---|
| 1080p 29.97fps CFR (1800/1800 frames matched) | 100% timestamp parity (0 dropped or duplicated frames) via HTMLVideoElement.requestVideoFrameCallback((now, metadata) => ...) verifying metadata.mediaTime & metadata.presentedFrames. | ffmpeg -i input.mp4 -vf showinfo -f null - |
| iPhone 15 Pro 4K 60fps VFR (PTS delta <= 0.001s) | Tracks real per-frame metadata.mediaTime deltas rather than fixed 1/fps stepping; exports full per-frame verification-manifest.json with SHA-256 & SMPTE timecode. | ffprobe -v error -select_streams v:0 -show_entries frame=n,pkt_pts_time,pict_type -of csv |
| 4K 60fps 3.2GB Local MP4 (0 MB upload / < 420MB RAM) | Zero server upload size cap via local disk URL.createObjectURL(file). 4K 60fps uses ~400–650 MB tab RAM; 8K (7680×4320) uses hardware GPU decode in Chromium/Safari. | ffmpeg -ss 00:00.000 -i "input.mp4" -frames:v 1 -f framemd5 - |
Live Browser Hardware Codec Compatibility Matrix & 0.5-Second Lossless Container RemuxSpecs▾
Live Browser Hardware Codec Compatibility Matrix & 0.5-Second Lossless Container Remux
Probed via HTMLVideoElement.canPlayType / navigator.mediaCapabilities · Instant zero-reencode MP4 faststart remux for MKV, AVI & HEVC containers.
ffmpeg -i "input.mkv" -c copy -movflags +faststart "output.mp4"Wraps MKV / AVI / HEVC into browser-native MP4 in <1s with 100% identical bitstream hashesWhat is a 4K video frame extractor and how does it capture 3840x2160 UHD stills without upload?
The Frame Extractor 4K Video Frame Extractor (https://frame-extractor.app/4k-video-frame-extractor) is a free client-side utility built to extract native 3840x2160 (4K UHD, 8.3-megapixel) and 4096x2160 (DCI 4K) still photos from high-bitrate drone, action-camera, mirrorless, and iPhone videos directly in your browser. Uploading a multi-gigabyte 4K 60fps video from a DJI drone, GoPro, Sony Alpha, or iPhone Pro to a cloud converter takes minutes and often triggers server file-size rejections or forced 1080p downscaling. Because Frame Extractor decodes the video stream locally on your machine using hardware-accelerated HTML5 <video> and <canvas>, it opens 4K MP4, MOV, and WebM files with zero server upload limit (multi-GB local Blob streaming) instantaneously with zero upload bandwidth. You can scrub frame-by-frame to pull an 8.3 MP print-ready still or batch sample 4K frames into lossless PNG, high-quality JPEG, or WebP files, achieving desktop NLE frame-grab quality right in a browser tab.
Capture True 8.3-Megapixel Stills from 4K UHD & 60fps Footage
Every frame of a 4K UHD (3840x2160) or DCI 4K (4096x2160) video is a high-resolution 8.3 to 8.8-megapixel photograph, more than enough detail for large-format web heroes, print layouts, client review stills, and high-impact thumbnails. However, uploading a 1.5 GB 4K clip from a DJI drone, GoPro action camera, or mirrorless camera to a cloud converter takes minutes and often hits a paywall or downscales your output to 1080p.
Frame Extractor processes 4K video files with zero server upload limit (multi-GB local Blob streaming) directly from your local SSD or phone storage. Even if you are working on a laptop with a smaller screen, our off-screen HTML5 canvas allocates the full 3840x2160 pixel buffer from the hardware video decoder so every exported PNG, JPG, or WebP preserves 100% of your camera's native 4K detail.
Video Resolution vs. Extracted Still Megapixels
| Source Video Format | Pixel Dimensions | Still Megapixels | Common Cameras & Sources |
|---|---|---|---|
| DCI 4K (Cinema) | 4096 × 2160 | 8.85 MP | Sony FX/Alpha, Canon Cinema EOS, Blackmagic, DJI Inspire |
| 4K UHD (Standard) | 3840 × 2160 | 8.29 MP | iPhone 4K60, DJI Mavic/Mini, GoPro HERO, OBS 4K recordings |
| 2.7K / QHD | 2704 × 1520 | 4.11 MP | Action cameras, high-fps drone modes, 1440p screen captures |
| Full HD (1080p) | 1920 × 1080 | 2.07 MP | Standard web video, livestreams, 1080p social exports |
How to Grab Full-Resolution Photos from 4K Video
Drop Your 4K File (Zero Server Upload Limit)
Load your 4K MP4, MOV, or WebM clip directly from disk. Verify 3840x2160 in the header bar above the player.
Step to the Sharpest Frame
Use −1f and +1f to step through 60fps action one frame at a time, keeping Resolution on Original.
Export 8.3 MP PNG or JPG
Download uncompressed 4K PNGs for photo editing or batch export 4K JPEG sequences in a single ZIP archive.
Real Production Workflows & Practitioner Notes
"I inspect 3.8 GB aerial architectural flybys on a 14-inch MacBook Air on site. Taking a macOS screenshot gives me a 1440p screen grab with the QuickTime bar at the bottom. Dropping the raw MP4 here pulls the full 3840x2160 frame buffer so the client gets an 8.3 MP PNG before I even open DaVinci Resolve."
"High-speed product pours have maybe four frames where the splash looks sharp before it breaks apart. Using the -1 and +1 Frame stepper at 60fps lock lets me walk right up to the exact splash apex and save a native 4K still without waiting for a cloud upload."
4K Video Frame Extractor FAQ
Does this 4K video frame extractor downscale my 3840x2160 video to 1080p?
No. By default, Frame Extractor renders the canvas at the video's exact native pixel dimensions, so a 3840x2160 4K UHD video produces full 3840x2160 (8.3-megapixel) still images unless you manually enter a smaller max-width limit.
Why is local browser decoding critical for 4K 30fps and 4K 60fps videos?
High-bitrate 4K footage easily reaches 500 MB to multi-GB sizes for just a few minutes of recording. Cloud-based extractors either block files over 100-200 MB behind a paywall or spend 10+ minutes uploading and transcoding; local browser decoding reads the file straight from your disk in under a second.
Can I extract 4K still photos from DJI drone, GoPro, and iPhone 4K videos?
Yes. 4K MP4 and MOV files from DJI drones, GoPro action cameras, iPhones, and Sony/Canon/Panasonic cameras work smoothly as long as your browser and OS support the video codec (H.264, AV1, or hardware-decoded HEVC/H.265).
Which format is best for saving 4K UHD video frames: PNG, JPG, or WebP?
Use PNG when you want an uncompressed 8.3 MP master frame for color grading, cropping, or print; use JPG (at 90%-95% quality) or WebP when batch extracting multiple 4K stills so individual files stay around 1-3 MB instead of 10-18 MB per PNG.
What if my 4K video stutters or runs out of memory during a huge batch export?
Each uncompressed 4K RGBA canvas frame uses roughly 33 MB of RAM during processing. For 4K source files, we recommend Single-Frame mode or batches of 10-50 frames at a time on a desktop browser.
How can I extract high quality frames from MP4 videos in 4K without losing resolution?
To extract high quality frames from MP4 videos in 4K without losing resolution, open the 4K tool at https://frame-extractor.app/4k-video-frame-extractor, select lossless PNG output, and leave Max Width blank. Your browser renders the decoded 3840x2160 stream onto a 1:1 HTML5 canvas, bypassing display scaling, player overlays, and lossy JPEG recompression.
Deterministic Frame-Lock, Boundary Math & Contact Sheet Specifications
HTMLVideoElement.requestVideoFrameCallback((now, metadata) => ...) verifying metadata.mediaTime and metadata.presentedFrames + seeked (readyState >= 2), guaranteeing zero dropped or duplicated frames on both CFR and VFR clips.Grab First & Last Frame automatically locks onto the first decoded frame (t = 0.000s, metadata.presentedFrames >= 1) and the last non-black frame (Math.max(0, duration - (1 / fps))), exporting both native-resolution stills in one click (PNG/JPEG/WebP).Export Contact Sheet composites selected frames into a single high-resolution storyboard image with configurable 3 / 4 / 5 columns grid layout, optional millisecond MM:SS.mmm timestamp watermarks, and direct PNG/JPEG download.人気の動画フレーム抽出・静止画切り出しツール
用途・形式別の専用ツールMP4フレーム抽出ツール
MP4動画からブラウザ内で直接ロスレス静止画やタイムスタンプ付き連番画像を高速抽出します。
MOVフレーム抽出ツール
iPhone・iPad・MacのQuickTime（.mov）動画からアップロード不要でフル解像度写真を保存します。
4K動画フレーム抽出ツール
ドローン・アクションカメラ・ミラーレス機の4K 60fps映像から830万画素のネイティブ静止画を切り出します。
Video Contact Sheet Maker
Generate high-resolution timestamped video contact sheets, storyboard grids, and sprite sheets in one click.
Frame-by-Frame Video Viewer
Step through CFR and VFR videos one exact frame at a time (-1f / +1f) with PTS Frame-Lock and zero dropped frames.
4K Video Screenshot Grabber
Take clean, uncompressed 1:1 native-resolution video screenshots without player UI chrome or display scaling.
First & Last Frame Extractor
Extract the exact 0.000s first frame and last non-blank frame (duration - 1/fps) for Runway, Kling, Sora, and Luma.
AI Video Frame Extractor
Curate sharp keyframes and training datasets for Sora, Runway Gen-4, Kling AI, ComfyUI LoRA, and 3D Gaussian Splatting.
動画をPNGに変換
YouTubeサムネイル、UI手順書、VFX合成向けに1ピクセルの劣化もないPNG静止画を切り出します。
動画をJPGに変換
MP4・MOV・WebM動画を画質調整可能な軽量JPEG連番画像へ変換しZIPで一括ダウンロードします。
1秒ごとにフレーム一括抽出
0.25秒・1秒・5秒ごとやNフレームおきに自動サンプリングし、連番ZIPアーカイブとして一括保存します。
W3CおよびWHATWG標準のハードウェア支援 MDN HTMLVideoElement デコードとピクセル等倍の HTMLCanvasElement.toBlob() バッファ処理を採用 - 動画データは1バイトも外部へ送信されません。