KI-Video Letzter-Frame Verlustfreier Extraktor
Extrahieren Sie bitgenaue Keyframes, umgehen Sie KI-Bewegungsunschaerfe (-1f, -2f, -3f) und pruefen Sie Naht-Uebergaenge fuer perfektes Video-Chaining.
Extracts 30 ending and 30 opening frames (~1s of motion at 30 fps). You can adjust this count anytime.
KI-Videoclip hier ablegen
Unterstuetzt MP4, MOV, WebM bis 4K (Kling, Sora, Runway, Veo, Luma, Hailuo)
100% lokal im Browser. Keine Daten werden auf Server hochgeladen.
Demuxing video GOP atoms...
Parsing ISO-BMFF sync sample atoms and decoding final GOP in browser memory
Chaining Quick Recipe
Feed this clean frame as the starting keyframe of your next clip in Kling ("Extend Video"), Runway Gen-3 ("First Frame"), or Wan 2.1 Image-to-Video.
If the 0f frame has motion blur from rapid panning, click -1f or -2f in the micro-scrubber below.
Precision Frame Studio
Renders precision opening and ending frames with millisecond accuracy. Select the ideal keyframe to bypass motion blur, artifacts, or loop transitions.
Clip Loop Continuity (Selected Tail Frame vs Selected Head Frame)
Analyzes whether the clip's end frame seamlessly matches its opening frame for cyclic loops or reverse chaining.
Comparing seam delta...
Multi-Clip Chaining Arbeitsbereich
Laden Sie bis zu 4 Clips hoch, um Nahtstellen zu pruefen und sie nahtlos zusammenzufuegen.
Clip #1
Drop video or browse
Clip #2
Drop video or browse
Clip #3
Drop video or browse
Clip #4
Drop video or browse
Seam Continuity Diffs (Clip A Last Frame vs Clip B First Frame)
Upload at least 2 clips above to inspect transition continuity and calculate seam scores.
Gapless MP4 Sequence Ready!
KI-Video Spickzettel fuer Chaining
Optimale Frame-Wahl und Prompt-Tipps fuer Top-Modelle.
Kling AI 1.5 & 2.0
Trending #1 for ExtensionsKling AI clips frequently suffer from a subtle 1-frame motion decay or luminance fade at the exact tail sample. Selecting -1f or -2f provides a significantly sharper subject edge for "Extend Video" chaining.
Runway Gen-3 Alpha & Turbo
Pro Filmmaking StandardIn Runway Gen-3, use the clean PNG as the "First Frame" of your next generation. Combine with Motion Brush to freeze stationary background elements.
MiniMax Hailuo AI (Video-01)
Photorealistic SOTAHailuo generates intense dynamic motion and human physics. The last 2 frames often feature velocity blur; using -2f guarantees a crisp focal plane.
Alibaba Wan 2.1 (14B)
Latest 2025 SOTA Open WeightsAlibaba Wan 2.1 is the latest breakthrough for image-to-video. When chaining in ComfyUI or WebUI, selecting -1f avoids end-sample latent slowing, providing flawless motion flow.
Luma Dream Machine (Ray 2)
Seamless Looping & Ray 2For perfect 360-degree loops or multi-shot sequences, extract both First Frame and Last Frame to verify seam difference before triggering "Extend".
Tencent HunyuanVideo (13B)
Cinematic Open WeightsHunyuanVideo uses a 3D VAE with excellent temporal stability. Feeding an uncompressed, C2PA-free PNG keyframe avoids latents artifacting during image-to-video initialization in ComfyUI.
Google Veo 2
4K Cinema FidelityVeo maintains exceptional adherence to prompt physics and 4K cinema resolution. Always use 100% uncompressed PNG to prevent compression macroblocking on the input keyframe.
PixVerse V3.5
Fast Multi-Shot KeyframingPixVerse V3.5 features dedicated Start & End keyframe fields. Use -1f to bypass final motion vector overshoot when chaining scenes together.
Pika Labs 2.1
Pikffects & Camera ControlUse Pika camera controls (Pan / Tilt / Zoom) locked to 0.1 strength when extending from the extracted keyframe to ensure smooth scene continuation.
OpenAI Sora
Closed Preview (Limited Access)Notice: OpenAI Sora remains in closed preview with waitlist access. For immediate, production-ready AI video chaining, use Kling AI 2.0, Runway Gen-3 Turbo, Hailuo, or Wan 2.1.
Midjourney Video
Artistic Style FocusPreserve Midjourney artistic style by feeding clean PNGs stripped of foreign EXIF so Midjourney can properly parse the starting frame aesthetics.
Warum Screenshots bei KI-Verlaengerungen scheitern
Vergleich zwischen Screenshots, alten Konvertern und unserem lokalen Extraktor.
| Funktion | FreeImGen KI-Extraktor | Screenshot | Ezgif / Kapwing |
|---|---|---|---|
| Farbgenauigkeit & Gamma | 0.0% Abweichung (Exaktes RGB) | 2–5% Farbverschiebung durch OS-Display | 1–4% Verschiebung durch Neukomprimierung |
| Micro-Scrubber | Letzter Frame, -1f, -2f, -3f, -5f | Keiner (Ungenaue Pause) | Nur grobe Sekundensuche |
| C2PA & Metadaten | Vollstaendig entfernt (Sauberes PNG) | Enthaelt Handy-Tags | Cloud-Spuren vorhanden |
| Datenschutz | 100% lokal im Browser | Lokal, aber verzerrt | Server-Upload noetig |
Technische Architektur & GOP-Parsing
Warum Bildschirmfotos zu harten Spruengen fuehren
Screenshots auf iOS oder Windows werden ueber OS-Farbprofile gerendert, was zu Helligkeits- und Gamma-Spruengen zwischen Clip A und Clip B fuehrt.
Direktes Demuxing per Mediabunny & WebCodecs
Durch direktes Auslesen der MP4-Sync-Samples decodieren wir ausschliesslich die letzten Frames in voller Aufloesung ohne Farbverfaelschung.
So verlaengern Sie KI-Videos nahtlos
Anleitung fuer Kling, Sora und Runway in 5 Schritten.
Clip A laden
Ziehen Sie das Video in den Editor.
Frame im Micro-Scrubber waehlen
Waehlen Sie 0f oder -1f gegen End-Unschaerfe.
Sauberes PNG kopieren
Kopieren Sie das metadatenfreie Bild.
In Generator einfuegen
Als Startframe fuer Clip B nutzen.
Im Chain-Modus pruefen
Uebergang analysieren und als MP4 exportieren.
Frequently Asked Questions
Werden meine Videos auf Server hochgeladen?
Nein, alles laeuft zu 100% lokal in Ihrem Browser ueber Mediabunny und WebCodecs.
Warum nicht einfach einen Screenshot machen?
Screenshots veraendern das Farbprofil um 2–5% und erfassen oft schwarze Raender oder UI-Elemente.
Supercharge Your AI Filmmaking Pipeline
Join pro filmmakers using Alibaba Wan 2.1, Kling AI 2.0, Runway Gen-3 Alpha & ElevenLabs audio synchronization for studio-grade generative cinematography.