Uwarp

Output is MP4. The first run downloads FFmpeg once in this browser.

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Flip video online

Flip a video left to right or top to bottom, then download the mirrored MP4 file. Local-first. No signup.

What is flip video?

Flip video means mirroring a clip left to right, top to bottom, or both, then downloading an MP4. This free local-first tool does that in the browser—no signup. A 90° turn for a sideways phone recording is a separate job on the Rotate Video page.

Flip video features

Mirror a clip and save an MP4.

  • Left to right

    Horizontal mirror of every frame.

  • Top to bottom

    Vertical flip so the picture is upside down.

  • Both

    Horizontal and vertical flips in one pass.

  • MP4 download

    H.264 video with audio when the source has a track.

How to flip a video

From upload to a mirrored MP4.

  1. Upload the clip

    Use MP4, MOV, or WebM, up to 200 MB.

  2. Choose the flip

    Left to right, top to bottom, or both.

  3. Download the MP4

    Save the mirrored file when processing finishes.

Tips for flipping video

Pick the mirror that matches the shot.
  • 01

    Selfie text

    A left-to-right flip reverses writing and logos in the frame.

  • 02

    Sideways clips

    A phone held upright in the wrong rotation needs Rotate Video, not a mirror.

  • 03

    Both flips

    Left-to-right plus top-to-bottom matches a 180° turn of the picture.

  • 04

    Quality slider

    Lower CRF keeps more detail. Higher CRF makes a smaller file.

Great for

When the picture should be mirrored.

  • Mirror shots

    Match a left-facing subject to a right-facing one.

  • Upside-down clips

    Turn a frame that was recorded the wrong way up.

  • Layout comps

    Preview a mirrored cut before you edit the timeline.

Why flip video here

A local mirror for short clips.

  • Free

    Unlimited flips with no signup.

  • Local-first

    The clip is processed in the browser.

  • MP4

    A file players and editors can open.

  • Audio kept

    The soundtrack stays with the mirrored picture when one exists.

Technical notes

How the mirror is applied.
Filters
FFmpeg hflip, vflip, or hflip then vflip.
Output
MP4, H.264, yuv420p, AAC audio when the source has sound.
Size limit
200 MB per file.
Privacy
Client-side FFmpeg. The video is not uploaded to a server.

Sources & References

FFmpeg flip filters.
  • “Flip the input video horizontally.”
    — FFmpeg Filters Documentation — hflip

    FFmpeg — hflip: The left-to-right mirror this page uses. ffmpeg.org/ffmpeg-filters.html#hflip

  • “Flip the input video vertically.”
    — FFmpeg Filters Documentation — vflip

    FFmpeg — vflip: The top-to-bottom flip this page uses. ffmpeg.org/ffmpeg-filters.html#vflip

  • “For example, to horizontally flip the input video with ffmpeg:”
    — FFmpeg Filters Documentation — hflip

    FFmpeg — hflip example: The same horizontal flip, shown in the filter manual as an ffmpeg command. ffmpeg.org/ffmpeg-filters.html#hflip

Frequently Asked Questions

Quick answers about this tool—open a question to read more.