Guide · Industrial engineering

Motion Study Software: A Practical Guide for Garment Industrial Engineers

A motion study shows you how an operator works, not just how long it takes. This guide explains the motion study workflow, what good motion study software should handle for you, and exactly how to run one in ProdEnhancer — from filming the operation to a report you can act on.

By Shohel Rana, founder of ProdEnhancer · Updated November 2026

What a motion study is

Motion study grew out of Frank and Lillian Gilbreth’s work, which broke manual tasks into basic elements they called therbligs — reach, grasp, move, position, use, release and others. Each element is either effective (it moves the work forward) or ineffective (searching, holding, re-grasping, waiting).

In a sewing line, the needle running is the value-added part of the cycle. Everything around it — picking up the parts, aligning them under the foot, pivoting mid-seam, trimming thread and putting the piece aside — is where most of the improvement opportunity sits. A motion study makes those elements visible so you can eliminate, combine, rearrange or simplify them (ECRS).

A time study tells you the cycle is 32 seconds. A motion study tells you that 9 of those seconds are spent reaching for the next bundle and re-aligning the part.

What motion study software should do

Doing a motion study on paper works, but it is slow. Software should take over the repetitive parts:

• Capture the operation on video so you can replay it instead of relying on one live observation.
• Mark cycles accurately and calculate average, minimum, maximum and variation (CV%) without a spreadsheet.
• Apply allowances and convert cycle time into hourly capacity.
• Break the cycle into motion phases and separate value-added time from handling.
• Suggest specific improvements for the machine and operation, not generic lean advice.
• Keep a history of studies so you can compare before and after a method change.
• Export a clean report you can share with line chiefs, production managers or buyers.

Manual vs. software motion study

Step-by-step workflow in ProdEnhancer

The Video Overall Study tool follows the same steps an IE would follow by hand:

1. Record the operation. Film a trained operator for several complete cycles (see filming tips below).
2. Upload the video and enter the study details: operation name, operator, line number and machine type. The machine type matters — the analysis uses machine-specific reference data for classes such as single needle lockstitch, overlock, flatlock, bartack, buttonhole, kansai and more.
3. Capture cycle times. Either use the video length as one cycle, or switch to manual marking and mark the start and end of each cycle while you watch.
4. Set the allowance % for personal needs, fatigue and delay (10% is the default starting point).
5. Choose an analysis focus. Pick the lens that matches your question:
   • Method & Motion Study — therblig-level motion economy and operator method.
   • Workplace Layout & 5S — bundle position, reach zones, tool and dispose locations.
   • Ergonomics & Fatigue — posture, repetitive strain and fatigue-driven cycle drift.
   • Machine Attachments & Tooling — folders, guides, jigs and features already on the machine.
   • Variability & Standard Work — why cycles vary and how to standardise the method.
6. Run the AI analysis. Each run uses 10 credits; if it fails, the credits are refunded automatically.
7. Review, re-analyse and export. Read the report, run it again with a different lens if you want another angle (every run is kept in the study’s history), and download the PDF.

How to film an operation for analysis

The quality of any motion study — manual or AI — depends on what the camera can see.

• Keep the phone fixed on a stand or stable surface; a moving frame hides motions.
• Frame the hands, the part, the needle area and the bundle. If the operator reaches outside the frame, you lose that motion.
• Film from slightly above and to the side so the hands are not hidden behind the machine head.
• Record several full cycles, starting and ending at the same point (for example, hand reaching for the next part).
• Choose a trained operator working at a normal pace, and tell them why you are filming.
• Avoid unusual events — thread breaks, bundle changes, conversations — or mark those cycles out.

Reading the results

A ProdEnhancer video study report brings together the numbers and the method findings:

• Cycle statistics — average cycle time, standard deviation and CV%. A high CV% usually points to an unstandardised method, material issues or skill gaps.
• Capacity per hour after your allowance, which you can carry into line balancing and target setting.
• Phase breakdown — how the cycle splits between pickup, position, sew, reposition, trim and dispose, so you can see how much of it is value-added sewing.
• Technique sections when they add value — such as a therblig breakdown, MODAPTS estimate, ECRS method development or workstation design notes.
• Top improvements and projected impact for the specific operation and machine.

For the formulas behind capacity, SMV, takt time and efficiency, see the IE formulas reference.

Limits to keep in mind

• The AI analyses still frames sampled from your video together with your cycle times — not every moment of the footage. Clear, well-framed video gives better results.
• Frames from your video are sent to an AI provider to produce the analysis.
• Suggestions are a starting point. Try a change with the operator, then re-time the operation to confirm the gain before updating your standard.
• Motion study improves a single operation. Line output is still set by the bottleneck, so check the whole line too.

Free tools that support the study

You can use these without an account:

• Time Study Stopwatch — time operations on the floor and find the bottleneck before you decide which one to film.
• Line Efficiency Calculator — measure line and operator efficiency before and after your method changes.
• IE Formulas — SMV, capacity, takt time, target and manpower formulas with worked examples.

See every tool, including capacity study and line balancing, on the tools page.

Frequently asked questions