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Same-prompt test · October 4, 2026

A NoCapMocap Alternative, Tested on the Same 12 Prompts

We ran the 12 sample prompts from our homepage through NoCapMocap and MocapGen. Here's where each one came out ahead, and exactly how we measured it.

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1 free preview a day when signed in · From 4 credits

MocapGen is not affiliated with NoCapMocap. We use the name only to identify the tool we tested.

MocapGen is a NoCapMocap alternative built on the same HY-Motion model, at the same price per second from 4 seconds up. In our same-prompt test across 12 prompts, MocapGen kept feet on the floor more often and exports a native .rbxmx — here's the full test, including where NoCapMocap won.

Tested October 4, 2026.

How we ran the test

To test MocapGen as a NoCapMocap alternative, we gave both tools the same jobs on October 4, 2026.

  1. Same 12 prompts

    The 12 sample prompts from our homepage, with the same length and motion mode on both tools.

  2. Same settings, no picking

    On nocapmocap.com's web app we chose HY-Motion, Balanced, and the Roblox rig, and kept all 48 takes. MocapGen gave 2 takes per prompt, 24 in all, with no picking.

  3. Measured by script

    We downloaded the R15 FBX from both, each at 30 frames per second. A script tracked the hips and ankles frame by frame and measured every distance against leg length.

  4. Rated blind

    Every take became the same stick figure facing the camera. One AI rater, a large language model, scored shuffled still frames from 1 to 5 for prompt match and quality without knowing which tool made which take.

We threw out a first round of ratings because our renders faced away from the camera and confused the rater.

What NoCapMocap does well

If you're weighing a NoCapMocap alternative, you likely know it's a solid tool. Here's where it beats us.

  • More ways in

    Text, video, speech, and crowd modes. MocapGen takes text only for now.

  • Its own Studio plugin

    Its Motion Lab plugin on the Creator Store brings animations into Studio. We have no plugin.

  • Two models

    You can pick HY-Motion or NVIDIA's Kimodo.

  • Prompt helpers

    A live word-count hint and a button that rewrites your prompt with AI.

  • Finer length control

    Length moves in 0.1-second steps. Ours moves in 0.5-second steps.

NoCapMocap vs MocapGen at a glance

NoCapMocapMocapGen
InputText, video, speech, crowdsText; video is on the roadmap
ModelsHY-Motion or NVIDIA KimodoHY-Motion
Short clips1 credit per second, so 2 s costs 2 credits4-credit minimum, so 2 s costs 4 credits
Free optionNo free credits1 free preview a day, plus a free animation library
Getting it into StudioMotion Lab plugin, a paste through the Blender Animations plugin, or R15 FBX.rbxmx with Insert from File, or R15 FBX, with no plugin

Both give 4 takes per run, clips from 0.5 to 10 seconds, Natural, In-place, and Loop modes, and R15 plus Mixamo-rig FBX files. Plans and packs cost the same: packs from $7 for 25 credits, plans from $9 a month for 50. See our pricing page and our free R15 animation library.

Same-prompt test results

24 MocapGen takes against 48 NoCapMocap takes:

MeasureMocapGenNoCapMocap
Feet sink into the floor by over 5% of leg length2 of 24 (8%)25 of 48 (52%)
Loop takes with a visible seam, over 1% of leg length0 of 1216 of 24
Both feet off the ground in over 20% of frames1 of 247 of 48
Takes rated 2 or lower for quality2 of 24 (8%)12 of 48 (25%)
Prompt match, average from 1 to 53.253.08
Quality, average from 1 to 53.212.96
Jitter, lower is smoother0.00970.0100
Motion size, higher means bigger moves1.091.18

The biggest gap was floor contact: all 4 NoCapMocap takes of the sprint start began sunk into the floor. Its loops also often jumped at the seam.

Side-by-side stick figures of a sprint start, each panel labeled MocapGen or NoCapMocap; the four NoCapMocap takes start sunk into the floor
Sprint start, every panel labeled by tool. This was the widest gap in the test.

Download the raw data

A NoCapMocap alternative test shouldn't rest on our word, so here is the raw data. Each sample name in the table above opens its side-by-side image, with every panel labeled by tool and take.

FileWhat's inside
Per-take metrics (CSV)Floor sink, floating, loop seam, jitter, length, and motion size for all 72 takes
Blind ratings (CSV)The rater's scores and defect notes for every panel, plus the key showing which tool made it
12 side-by-side imagesOne per prompt, linked from the sample names above

Where NoCapMocap won or tied

  • Energy: its moves were about 8% bigger, which can read as punchier.
  • Short clips: 2 seconds cost 2 credits there and 4 here. From 4 seconds up, the price is the same.
  • Speed: its runs took 36 to 107 seconds, about 78 in the middle. We haven't timed ours end to end, so we make no speed claim.
  • Ties: smoothness and exact clip length were even, and the rater's top picks split 6 to 6.
  • Shared flaws: arms passing through the head, weak arm swing on walks, and faint idle head turns, all from the shared model.

What this test can't tell you

  • We ran it ourselves, and we make one of the two tools.
  • Sample sizes differ: 2 takes per prompt from us, 4 from NoCapMocap.
  • One AI rater scored still frames, not video.
  • Stick figures hide hand and foot details.
  • We rewrote 2 prompts after our first try went badly, and NoCapMocap got the rewritten versions too.
  • After the test we added a floor fix to MocapGen. Every number here is from before it.
  • This was one day; either tool may change.

Should you switch to a NoCapMocap alternative?

  • Stay with NoCapMocap if

    you want video or speech input, a Studio plugin, or lots of 1 to 3 second clips at the lowest price.

  • Try MocapGen if

    you want a native .rbxmx with no plugin, feet that stay on the floor, clean loops, or a free preview before you pay.

FAQ

What is the best NoCapMocap alternative?
It depends on what you use NoCapMocap for. NoCapMocap is strong for video input and plugin workflows. If you want text to R15 with a native .rbxmx and a free daily preview, MocapGen is a close match.
Is MocapGen connected to NoCapMocap?
No. MocapGen and NoCapMocap are made by different teams and aren't affiliated. Same model doesn't mean same product: both run HY-Motion, a model Tencent released publicly, but the R15 retargeting and cleanup differ, and that's what our test measured.
Is there a free NoCapMocap alternative?
MocapGen gives signed-in users 1 free preview a day and a free R15 animation library. Roblox's own Animation Capture, built into Studio, turns a video under 15 seconds into R15 keyframes.
Is NoCapMocap free?
No free credits. Its own site says a free account includes no credits and generating needs a plan or credit pack. Checked October 4, 2026.
Which one is cheaper?
Plans and packs cost the same. Both charge 1 credit per second, but MocapGen has a 4-credit minimum, so a 2-second clip costs 2 credits on NoCapMocap and 4 here.
Which one is faster?
We don't know yet. NoCapMocap took 36 to 107 seconds per run in our test, but we haven't timed MocapGen end to end.
Does MocapGen have a Roblox Studio plugin?
No. MocapGen gives you an .rbxmx file to add with Insert from File, so you don't need one.
Can I check your results?
Yes. Each sample name in the per-prompt table opens a labeled side-by-side image, and the per-take metrics and blind ratings, key included, download as CSV files. The 12 prompts are our homepage samples, so you can rerun them too.

Run one of these prompts yourself

Testing a NoCapMocap alternative? Pick any of the 12 prompts above, run it on MocapGen, and judge the takes yourself. Or start from a clip in our free animation library.

Try a free preview

1 free preview a day when signed in · From 4 credits · Not affiliated with NoCapMocap or Roblox Corporation.

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