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Gratis Videosammenfletter

Saml flere videoklip til én MP4 i den rækkefølge, du vælger. Forskellige størrelser tilpasses med sorte bjælker; ens klip samles uden genkodning. Kører i din browser – ingen upload.

Slip filer her, eller klik for at gennemse

MP4, WebM, MOV, AVI, MKV, M4V · ingen påtvunget størrelsesbegrænsning

eller tryk Ctrl+V for at indsætte fra udklipsholderen

Du kan slippe flere filer på én gang

Gennemse filer

Dine filer forlader aldrig din enhed. Al behandling sker lokalt i din browser.

Sådan fungerer det

Joins several video clips into one MP4, in the order you choose, with the FFmpeg engine running in your browser. Clips of different sizes or shapes are fitted into one frame with black bars instead of being stretched or cropped.

  1. 1
    Add and order your clips
    Drop in MP4, MOV, WebM or MKV files, then drag them or use the up/down arrows to set the order. Tap a thumbnail to preview a clip.
  2. 2
    Each clip is checked
    FFmpeg (WebAssembly, ~31 MB, downloaded once and cached) reads every clip's codec, frame size, frame rate and audio format. Nothing is uploaded.
  3. 3
    Matching clips are joined as-is
    When every clip shares the same codec, size, frame rate and audio (e.g. several clips from one phone), they are joined by stream copy with FFmpeg's concat demuxer — no re-encoding and no quality loss.
  4. 4
    Mixed clips are re-encoded to one frame
    Otherwise each clip is scaled to fit the output size (same as the first clip, 1080p or 720p), padded with black bars, set to one frame rate and encoded to H.264 with AAC audio. Clips without sound get silence so the audio stays in sync.

Your videos are read directly from your device by the in-browser engine and the merged MP4 is built in memory. No clip is ever uploaded to a server.

Relaterede værktøjer

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Lydsammensætter

Flet flere lydfiler til én i vilkårlig rækkefølge med valgfri crossfade. Eksporter som MP3, M4A eller WAV. Kører udelukkende i din browser — ingen upload.

Prøv detFiler forbliver lokale
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PDF-sammenfletning

Flet flere PDF-filer til én. Træk for at omarrangere sider.

Prøv detFiler forbliver lokale
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Mono ↔ Stereo-konverter

Konverter lyd mellem mono og stereo, byt venstre/højre kanaler, eller del en stereofil i separate kanaler — helt i din browser.

Prøv detFiler forbliver lokale

Ofte stillede spørgsmål