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Head-to-head · Green Screen Software

RVM-Web vs Knockout API

  • Updated Oct 2026
  • Both researched from official sources
  • 4 checks side by side
Higher score RVM-Web #1 in Green Screen Software 9.4/10 Free plan Free plan✓ 2 of 4 features Visit RVM-Web
Knockout API #3 in Green Screen Software 9.2/10 Free plan Free plan✓ 1 of 4 features Visit Knockout API

RVM-Web leads on 0 checks, Knockout API on 0, and 4 are even. Who comes out ahead on the 4 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreRVM-Web · 9.4/10
  • Free planboth
  • Most featuresRVM-Web · 2 of 4

RVM-Web scores higher on our rubric for green screen software: 9.4 against 9.2 out of 10; our editors rank them #1 and #3.

RVM-Web is the better fit for free editors needing video and image cutouts. Knockout API is the better fit for developers needing flexible alpha-video processing.

  • RVM-Web fits best

    Free editors needing video and image cutouts

  • Knockout API fits best

    Developers needing flexible alpha-video processing

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Side by side

Feature RVM-Web 9.4/10 Visit ↗ Knockout API 9.2/10 Visit ↗
At a glance
Editor score 9.4 9.2
Ranking #1 in Green Screen Software #3 in Green Screen Software
Best for Free editors needing video and image cutouts Developers needing flexible alpha-video processing
Pricing model Free Free plan + paid
Starting price Free plan $10/mo
Free plan ✓ ✓
Free trial — —
Deployment Self-hosted Cloud, Self-hosted
Platforms Web, Windows, macOS, Linux Web
Support Docs Email, Community, Docs, Live chat
Built for Solo, Small business Small business, Mid-market, Enterprise
Features RVM-Web 2/4 · Knockout API 1/4
AI background removal ✓ (best) Not checked yet
Transparent export ✓ (best) Not checked yet
Batch processing Not checked yet ✓ (best)
API access Not checked yet Not checked yet
Specs
Input media Both Not checked yet
Max export resolution Not checked yet Not checked yet
Max video length Not checked yet Not checked yet
Our review
Pros
  • Free, open-source, and cross-platform across Windows, macOS, Linux, and web
  • Exports alpha video, alpha masks, and PNG sequences for compositing
  • Includes AI cutouts, upscaling, image editing, and video editing tools
  • Real alpha-channel output with ProRes 4444 and WebM export
  • Background replacement, blur compositing, and image cutouts
  • Open-source API with REST, SDK, CLI, and self-hosting options
Cons
  • No stated batch processing or API access
  • Local processing requires the application to run on the user's computer
  • CUDA acceleration is optional; CPU fallback is available
  • Video processing is limited to 1080p and 30-second clips
  • Video background removal is available only on paid tiers
  • Free plan is limited to 30 images per month
Our verdict

RVM-Web is a local, open-source application for removing backgrounds from video and images without a green screen or cloud upload. It runs through a browser-based local interface on the user's computer and supports Windows, macOS, Linux,…

Read the review →

Knockout API is a hosted, open-source background-processing API for developers and product teams. It handles video background removal with real alpha-channel output, image cutouts, background replacement, blur compositing, portrait…

Read the review →
  1. RVM-WebGreen Screen Software 9.4Free plan
  2. Knockout APIGreen Screen Software 9.2Free plan

Strengths and trade-offs

  • RVM-Web — where it wins

    • Free, open-source, and cross-platform across Windows, macOS, Linux, and web
    • Exports alpha video, alpha masks, and PNG sequences for compositing
    • Includes AI cutouts, upscaling, image editing, and video editing tools

    Where it doesn't

    • No stated batch processing or API access
    • Local processing requires the application to run on the user's computer
    • CUDA acceleration is optional; CPU fallback is available

  • Knockout API — where it wins

    • Real alpha-channel output with ProRes 4444 and WebM export
    • Background replacement, blur compositing, and image cutouts
    • Open-source API with REST, SDK, CLI, and self-hosting options

    Where it doesn't

    • Video processing is limited to 1080p and 30-second clips
    • Video background removal is available only on paid tiers
    • Free plan is limited to 30 images per month

More comparisons

All green screen software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update