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Lightricks/
$0.25 / second
*LTX AlphaGen by Lightricks separates a video's foreground from its background. It returns a grayscale alpha matte and the input with that matte as its alpha channel, as a ProRes 4444 file ready to composite, with fine edge detail and partial transparency up to 4K.

LTX AlphaGen by Lightricks separates the foreground of a video from its background, frame by frame. It returns a grayscale alpha mask and a ready-to-composite cutout, with fine edge detail and partial transparency, at up to 4K.
.mov with an alpha channel. Premiere Pro, Final Cut Pro, DaVinci Resolve, After Effects and Nuke read it directly.The sample above shows the input, the mask and the cutout placed on a new background.
| Field | What it is |
|---|---|
video_url | The alpha mask as an MP4: white is foreground, black is background. Plays anywhere, and works as a track matte on your original footage. |
rgba_video_url | Your video with the mask as its alpha channel, a ProRes 4444 .mov. Browsers can't play it, so the model page offers it as a download. |
Neither output has audio. ProRes files are large: a 4-second 1080p cutout is about 200 MB.
video, required: an https URL (up to 200 MB), or a data URI, base64 or file upload (up to 15 MB encoded). MP4, MOV or MKV, encoded as H.264 or H.265.
Billed per started second of the output video, which is about as long as your input, by the input's short side:
| Short side | Price per second |
|---|---|
| up to 1080 px | $0.25 |
| up to 1440 px | $0.50 |
| up to 2160 px | $1.00 |
A 4-second 1080p clip costs $1.00. A 10.2-second 1080p clip is billed as 11 seconds: $2.75.
curl -X POST https://api.deepinfra.com/v1/inference/Lightricks/LTX-AlphaGen \
-H "Authorization: bearer $DEEPINFRA_TOKEN" \
-F video=@clip.mp4
The request returns when the job is done, typically in one to three minutes; pass webhook to be called instead. The output links are hosted by Lightricks and aren't permanent, so save the files you want to keep.
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