Video Negative Converter

Drag & Drop or Click to Select a Video

MP4, MOV, WebM, or MKV negative footage

Tip: paste a video file from clipboard (Ctrl/⌘+V).

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Settings are written to the URL as you change them. Nothing differs from the defaults yet.

Turn footage of film negatives into a positive video. The conversion runs per frame: divide out the orange base of the film, invert, then apply exposure and color trims. The soundtrack passes through untouched.

The orange mask

Color negative film has an orange base built into every frame. A plain inversion turns that orange into a strong cyan-blue cast over the whole picture.

The Film Base color is divided out of every pixel first, so the unexposed film maps to white. Inverting then turns the border into true black and leaves the image without the cast.

Setting the film base

Scrub to a frame where the film edge, a sprocket gap, or the space between frames is in view. Pause there, open Film Base, and pick that area with the eyedropper. The preview updates on the paused frame, so the change is visible before playback starts.

Lighting drifts in hand-held captures of a light table or projector. If the cast returns later in the clip, sample the border again at that point and compare.

Exposure and color balance

Exposure scales the result by up to 2 stops in each direction, applied after the inversion. Red Balance moves between cyan and red, and Blue Balance moves between yellow and blue. Green stays fixed, which is why two sliders cover the neutral axis.

One setting applies to the whole clip, so set exposure on a frame with both a highlight and a shadow in shot.

Black & white negatives

Black & white film has no orange base, so this mode skips the mask and color trims and inverts the red, green, and blue channels directly. Exposure still applies.

The same mode inverts an ordinary color video into its negative, for a stylized look or to check a clip that was captured inverted by mistake.

Size and export time

The export defaults to 720p. Frames larger than the chosen size are scaled down before conversion, and smaller frames are left at their own size. Choose 1080p or Source size for the full resolution, and expect the export to take longer.

The inversion work is split across the processor’s cores. The progress on the export button counts source time, and a line under it reports the rendered frame rate once the file is ready.

Soundtrack

Audio is copied from the source packet for packet when the output container supports its codec, so it is not re-encoded. When the codec does not fit, the track is decoded and encoded again as AAC or Opus.

Frequently Asked Questions

What does the converter do, and which files does it read?

It divides out the orange base of color negative film, then inverts every frame of the video. It reads MP4, MOV, WebM, and MKV files. MP4 and MOV sources export as MP4, and WebM and MKV sources export as WebM.

Can I invert the colors of an ordinary video?

Yes. Switch on Black & white film. That mode skips mask removal and inverts each channel directly, which turns any clip into its negative with the colors kept.

How do I find the film base color?

Pause on a frame where the unexposed film border or the gap between frames is visible, and pick it with the eyedropper next to Film Base. The eyedropper needs Chrome or Edge; in other browsers, type the hex value. If no border is in shot, adjust Film Base until gray objects look neutral.

What happens to the audio track?

It is copied into the export unchanged when the output container can hold its codec. Otherwise it is re-encoded. If the browser has no audio encoder for the container, the video exports without sound and a note under the export button says so.

Why does the export take longer than the clip?

Every frame is decoded, inverted, and encoded again. A 1080p frame has 2.25 times the pixels of a 720p frame, so 720p output, the default, finishes much sooner.

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Film Negative Converter

Turn a scanned or camera-digitized film negative into a positive. Removes the orange mask of color negative film before inversion, with exposure and red/blue balance trims for the final image.

Gradient Map Video Editor

Recolor a video by mapping its brightness onto a five-stop color gradient. Pick one of 12 palettes or set each stop yourself, then export MP4 or WebM with the original soundtrack.

Anaglyph 3D Video Effect

Split every frame of a video into offset color channels for the red and cyan look of anaglyph 3D glasses. Set the separation distance and angle, color pair, and ghosting. Exports MP4 or WebM with the original soundtrack.

Disposable Camera Video Effect

Give a video the look of a cheap point-and-shoot film camera: harsh flash bloom, faded warm print color, light leaks, vignette, and grain and dust that move on every frame. Set flash strength and film finish. Exports MP4 or WebM with the original soundtrack.

Emboss Video Effect

Turn every frame of a video into a lit relief, as if pressed into metal or paper. Set depth, light angle, blend, and whether color is kept; depth scales with the output size. Exports MP4 or WebM with the original soundtrack.

Oil Painting Video Effect

Turn every frame of a video into an oil painting with an edge-preserving Kuwahara brush filter, stronger color, and canvas texture. Set brush size, vibrance, and canvas texture; brush size scales with the output. Exports MP4 or WebM with the original soundtrack.

Redscale Video Effect

Remap every frame of a video to the redscale film palette: deep red shadows, orange midtones, and yellow highlights. Set redscale amount, yellow highlights, blue retention, exposure, and contrast. Exports MP4 or WebM with the original soundtrack.

Solarize Video Effect

Reverse the bright tones in every frame of a video toward a negative while the darks stay put, the darkroom Sabattier look. Set threshold, tone reversal, and color or monochrome output. Exports MP4 or WebM with the original soundtrack.

Stained Glass Video Effect

Turn every frame of a video into a stained glass window: Voronoi glass cells with lead lines and texture, on a layout that stays fixed while the colors move. Set glass scale, cell variance, lead thickness, and lead color. Exports MP4 or WebM with the original soundtrack.

Aerochrome Video Effect

Give a video the false-color infrared look of Kodak Aerochrome: green foliage turns red or magenta while skies stay blue, with film grain that moves on every frame. Set profile, intensity, foliage, and red bloom. Exports MP4 or WebM with the original soundtrack.

Blueprint Video Effect

Turn every frame of a video into a blueprint drawing: white edge lines on drafting blue with a measured grid. Set edge intensity, blue hue, and grid opacity. Exports MP4 or WebM with the original soundtrack.

Bokeh Video Effect

Defocus every frame of a video and turn bright highlights into round or polygonal bokeh discs. Set highlight threshold, disc diameter, aperture blades, background defocus, and disc brightness. Exports MP4 or WebM with the original soundtrack.