Playlist Duration

Playlist · NPTEL IIT Delhi

Theory of Yarn Structure

by NPTEL IIT Delhi · 26 videos

Total watch time

21h 1m

at 1× speed · exactly 21 hours, 1 minute, 23 seconds at 1×

At an hour a day you'd finish in 22 days

The shape of the course

Each column is one video, to scale

1:20:25

WatchedTo watch

Compare Open on YouTube JSON

Next time, skip the copying: change youtube.com to playlistduration.com in any playlist, video or channel address and it opens here. Or see the total on YouTube itself, with our extension for Chrome, Firefox or Edge.

Your plan

Plan to finish

About 22 days at an hour a day

Pick a daily pace and the days you'll watch. Ticked videos are skipped.

Days

At one hour a day, every day, this playlist takes about 22 days. Turn on JavaScript to plan around your week.

Videos (26)

21h 1m in total · tick what you've watched

Tick videos you've watched — progress is saved in this browser. Titles open on YouTube in a new tab.

Videos to
Watched
1 Intro Video 4:03 2018-11-16
2 Basic Characteristics of Yarns (contd.) 56:48 2019-02-01
3 Tensile Mechanics of Yarns (contd.-2) 58:14 2019-05-06
4 Tensile Mechanics of Yarns (contd.-3) 14:32 2019-05-06
5 Tensile Mechanics of Yarns (contd.-1) 33:18 2019-05-06
6 Tensile Mechanics of Yarns (contd.) 27:45 2019-05-06
7 Tensile Mechanics of Yarns 58:14 2019-05-06
8 Yarn Shrinkage due to Washing 59:42 2019-05-06
9 Radial Migration of Fibres in Yarns (contd.-1) 1:01:50 2019-05-06
10 Radial Migration of Fibres in Yarns (contd.) 1:01:28 2019-05-06
11 Radial Migration of Fibres in Yarns 1:01:19 2019-05-06
12 Mass Irregularity of Yarns (contd.-3) 1:03:05 2019-05-06
13 Mass Irregularity of Yarns (contd.-2) 1:03:00 2019-05-06
14 Mass Irregularity of Yarns (contd.) 1:03:19 2019-05-06
15 Mass Irregularity of Yarns 58:41 2019-05-06
16 Helical Model of Fibers in Yarns (contd.-2) 15:33 2019-02-15
17 Helical Model of Fibers in Yarns (contd.-1) 59:57 2019-02-15
18 Helical Model of Fibers in Yarns (contd.) 50:51 2019-02-15
19 Helical Model of Fibers in Yarns 54:39 2019-02-09
20 Relations Among Yarn Count, Twist, and Diameter (contd.) 58:48 2019-02-09
21 Relations Among Yarn Count, Twist, and Diameter 1:00:23 2019-02-09
22 Basic Characteristics of Yarns (contd.-1) 13:40 2019-02-01
23 Basic Characteristics of Yarns 1:00:38 2019-02-01
24 The Building Block of Yarns (contd.) 55:41 2019-05-06
25 The Building Block of Yarns 1:20:25 2019-05-06
26 INTRO 5:30 2019-12-10
For your README

Embed a badge

Show the watch time in a README or course description — it links back here and updates itself

Watch time: 21h 1m · 26 videos

Markdown
[![Watch time: 21h 1m · 26 videos](https://playlistduration.com/badge/playlist/PLp6ek2hDcoND0qADz6q3d1zaqgFlfkoOj.svg)](https://playlistduration.com/playlist/PLp6ek2hDcoND0qADz6q3d1zaqgFlfkoOj)
HTML
<a href="https://playlistduration.com/playlist/PLp6ek2hDcoND0qADz6q3d1zaqgFlfkoOj"><img src="https://playlistduration.com/badge/playlist/PLp6ek2hDcoND0qADz6q3d1zaqgFlfkoOj.svg" alt="Watch time: 21h 1m · 26 videos" width="203" height="20"></a>

Add ?speed=1.5 to the image URL for the time at that speed, ?label=Course to change the left text, or ?style=flat-square for square corners.

Want the numbers themselves? GET https://playlistduration.com/api/v1/playlist/PLp6ek2hDcoND0qADz6q3d1zaqgFlfkoOj returns them as JSON — free, no key. API docs →

Data from the YouTube Data API as of 2026-10-23 (cached). Private or deleted videos are excluded from totals.