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Loop Control (Video Section Loop)

Firefox AMO

CI Status

What It Does

LoopControl is a browser extension for Chrome and Firefox that lets you loop custom sections of videos - not just from the beginning to end. A controller overlays all videos, letting you set a start and end point for the loop.

Why Use It?

  • Skip the fluff - loop just the part that you care about
  • Master that recipe, riff, or dance move by repeating important sections
  • Turn any video segment into a gif-like loop
  • Utilize the visual controller overlay or keybindings
  • Works on virtually any HTML5 video across Chrome and Firefox

How?

All HTML5 videos will display a moveable and hideable controller that indicates if loops are currently toggled on or off. Here you can set the start and end times of the sections you want to loop.

loopcontrol-example

You can also manually toggle LoopControl by right-clicking the video and selecting loop.

Default Keybindings (targets the last video controller you interacted with):

  • Q - Set loop start
  • E - Set loop end
  • R - Toggle loop
  • H - Hide controller

Cross-platform Browser Support

Since 2024, Google deprecated Manifest V2 for Chrome extensions in favour of Manifest V3. So while Firefox supports both Manifest V2 and Manifest V3 extensions, Chrome will only support Manifest V3 moving forward. Among other changes, Manifest V3 was interfering with how Firefox prompted for required permissions. Therefore two different manifests exist in the ./manifests/ folder.

To switch manifest types before testing/building:

npm run prepare:chrome # Copies Manifest V3
npm run prepare:firefox # Copies Manifest V2

Installation

Install from Addons.Mozilla.Org (AMO)

Install through the official Firefox Add-ons Web Store link.

Firefox Temporary Add-on (For testing purposes)

  1. Download this repo as a .zip file
  2. Unzip the file. The folder is loopcontrol-main
  3. Change into the directory with cd loopcontrol
  4. Copy the proper manifest version for Firefox with npm run prepare:firefox
  5. In Firefox, go to about:debugging
  6. Click on This Firefox -> Load Temporary Add-on
  7. Select manifest.json within the loopcontrol-main folder

Chrome Temporary Add-on (For testing purposes)

  1. Download this repo as a .zip file
  2. Unzip the file. The folder is loopcontrol-main
  3. Change into the directory with cd loopcontrol
  4. Copy the proper manifest version for Chrome with npm run prepare:chrome
  5. In Chrome, go to chrome://extensions
  6. Enable Developer Mode in the top-right
  7. Click 'Load unpacked extension...'
  8. Select the loopcontrol-main folder

Testing

  1. Change into the project directory with cd loopcontrol
  2. Install test dependencies with npm install
  3. Run the automated Jest tests with npm test

To-do

  • 48x48 and 128x128 logos for Chrome store

Credit

Huge thanks to Video Speed Controller, the Firefox fork (seemingly abandoned) and the more updated gediminasel fork with a few helpful fixes. The loop UI and settings pages were adapted from these extensions.

Credit to Samplelib's videos for the test .mp4.

Extension icon created by Pixel perfect - Flaticon

Mockup assets used in extension listings from MockupDen and Shaping Rain

About

A Firefox and Chrome extension that lets you loop specific sections of any HTML 5 video.

Topics

browser-extensionchrome-extensionextensionhtml5-videojavascriptvideoweb-extension

Resources

Readme
MIT license
Activity

Stars

6 stars

Watchers

1 watching

Forks

0 forks
Report repository

Used by

Contributors

Languages

, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

Skip to content
BranchesTags
Repository files navigation
Loop Control (Video Section Loop)
Firefox AMO
CI Status
What It Does
LoopControl is a browser extension for Chrome and Firefox that lets you loop custom sections of videos - not just from the beginning to end. A controller overlays all videos, letting you set a start and end point for the loop.
Why Use It?
  • Skip the fluff - loop just the part that you care about
  • Master that recipe, riff, or dance move by repeating important sections
  • Turn any video segment into a gif-like loop
  • Utilize the visual controller overlay or keybindings
  • Works on virtually any HTML5 video across Chrome and Firefox
How?
All HTML5 videos will display a moveable and hideable controller that indicates if loops are currently toggled on or off. Here you can set the start and end times of the sections you want to loop.
loopcontrol-example
You can also manually toggle LoopControl by right-clicking the video and selecting loop.
Default Keybindings (targets the last video controller you interacted with):
  • Q - Set loop start
  • E - Set loop end
  • R - Toggle loop
  • H - Hide controller
Cross-platform Browser Support
Since 2024, Google deprecated Manifest V2 for Chrome extensions in favour of Manifest V3. So while Firefox supports both Manifest V2 and Manifest V3 extensions, Chrome will only support Manifest V3 moving forward. Among other changes, Manifest V3 was interfering with how Firefox prompted for required permissions. Therefore two different manifests exist in the ./manifests/ folder.
To switch manifest types before testing/building:
npm run prepare:chrome # Copies Manifest V3
npm run prepare:firefox # Copies Manifest V2
Installation
Install from Addons.Mozilla.Org (AMO)
Install through the official Firefox Add-ons Web Store link.
Firefox Temporary Add-on (For testing purposes)
  1. Download this repo as a .zip file
  2. Unzip the file. The folder is loopcontrol-main
  3. Change into the directory with cd loopcontrol
  4. Copy the proper manifest version for Firefox with npm run prepare:firefox
  5. In Firefox, go to about:debugging
  6. Click on This Firefox -> Load Temporary Add-on
  7. Select manifest.json within the loopcontrol-main folder
Chrome Temporary Add-on (For testing purposes)
  1. Download this repo as a .zip file
  2. Unzip the file. The folder is loopcontrol-main
  3. Change into the directory with cd loopcontrol
  4. Copy the proper manifest version for Chrome with npm run prepare:chrome
  5. In Chrome, go to chrome://extensions
  6. Enable Developer Mode in the top-right
  7. Click 'Load unpacked extension...'
  8. Select the loopcontrol-main folder
Testing
  1. Change into the project directory with cd loopcontrol
  2. Install test dependencies with npm install
  3. Run the automated Jest tests with npm test
To-do
  •  48x48 and 128x128 logos for Chrome store
Credit
Huge thanks to Video Speed Controller, the Firefox fork (seemingly abandoned) and the more updated gediminasel fork with a few helpful fixes. The loop UI and settings pages were adapted from these extensions.
Credit to Samplelib's videos for the test .mp4.
Extension icon created by Pixel perfect - Flaticon
Mockup assets used in extension listings from MockupDen and Shaping Rain
About
A Firefox and Chrome extension that lets you loop specific sections of any HTML 5 video.
Topics
browser-extensionchrome-extensionextensionhtml5-videojavascriptvideoweb-extension
Resources
Readme
MIT license
Activity
Stars
6 stars
Watchers
1 watching
Forks
0 forks
Report repository
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
Loop Control (Video Section Loop)
Firefox AMO
CI Status
What It Does
LoopControl is a browser extension for Chrome and Firefox that lets you loop custom sections of videos - not just from the beginning to end. A controller overlays all videos, letting you set a start and end point for the loop.
Why Use It?
  • Skip the fluff - loop just the part that you care about
  • Master that recipe, riff, or dance move by repeating important sections
  • Turn any video segment into a gif-like loop
  • Utilize the visual controller overlay or keybindings
  • Works on virtually any HTML5 video across Chrome and Firefox
How?
All HTML5 videos will display a moveable and hideable controller that indicates if loops are currently toggled on or off. Here you can set the start and end times of the sections you want to loop.
loopcontrol-example
You can also manually toggle LoopControl by right-clicking the video and selecting loop.
Default Keybindings (targets the last video controller you interacted with):
  • Q - Set loop start
  • E - Set loop end
  • R - Toggle loop
  • H - Hide controller
Cross-platform Browser Support
Since 2024, Google deprecated Manifest V2 for Chrome extensions in favour of Manifest V3. So while Firefox supports both Manifest V2 and Manifest V3 extensions, Chrome will only support Manifest V3 moving forward. Among other changes, Manifest V3 was interfering with how Firefox prompted for required permissions. Therefore two different manifests exist in the ./manifests/ folder.
To switch manifest types before testing/building:
npm run prepare:chrome # Copies Manifest V3
npm run prepare:firefox # Copies Manifest V2
Installation
Install from Addons.Mozilla.Org (AMO)
Install through the official Firefox Add-ons Web Store link.
Firefox Temporary Add-on (For testing purposes)
  1. Download this repo as a .zip file
  2. Unzip the file. The folder is loopcontrol-main
  3. Change into the directory with cd loopcontrol
  4. Copy the proper manifest version for Firefox with npm run prepare:firefox
  5. In Firefox, go to about:debugging
  6. Click on This Firefox -> Load Temporary Add-on
  7. Select manifest.json within the loopcontrol-main folder
Chrome Temporary Add-on (For testing purposes)
  1. Download this repo as a .zip file
  2. Unzip the file. The folder is loopcontrol-main
  3. Change into the directory with cd loopcontrol
  4. Copy the proper manifest version for Chrome with npm run prepare:chrome
  5. In Chrome, go to chrome://extensions
  6. Enable Developer Mode in the top-right
  7. Click 'Load unpacked extension...'
  8. Select the loopcontrol-main folder
Testing
  1. Change into the project directory with cd loopcontrol
  2. Install test dependencies with npm install
  3. Run the automated Jest tests with npm test
To-do
  •  48x48 and 128x128 logos for Chrome store
Credit
Huge thanks to Video Speed Controller, the Firefox fork (seemingly abandoned) and the more updated gediminasel fork with a few helpful fixes. The loop UI and settings pages were adapted from these extensions.
Credit to Samplelib's videos for the test .mp4.
Extension icon created by Pixel perfect - Flaticon
Mockup assets used in extension listings from MockupDen and Shaping Rain
About
A Firefox and Chrome extension that lets you loop specific sections of any HTML 5 video.
Topics
browser-extensionchrome-extensionextensionhtml5-videojavascriptvideoweb-extension
Resources
Readme
MIT license
Activity
Stars
6 stars
Watchers
1 watching
Forks
0 forks
Report repository
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
Loop Control (Video Section Loop)
Firefox AMO
CI Status
What It Does
LoopControl is a browser extension for Chrome and Firefox that lets you loop custom sections of videos - not just from the beginning to end. A controller overlays all videos, letting you set a start and end point for the loop.
Why Use It?
  • Skip the fluff - loop just the part that you care about
  • Master that recipe, riff, or dance move by repeating important sections
  • Turn any video segment into a gif-like loop
  • Utilize the visual controller overlay or keybindings
  • Works on virtually any HTML5 video across Chrome and Firefox
How?
All HTML5 videos will display a moveable and hideable controller that indicates if loops are currently toggled on or off. Here you can set the start and end times of the sections you want to loop.
loopcontrol-example
You can also manually toggle LoopControl by right-clicking the video and selecting loop.
Default Keybindings (targets the last video controller you interacted with):
  • Q - Set loop start
  • E - Set loop end
  • R - Toggle loop
  • H - Hide controller
Cross-platform Browser Support
Since 2024, Google deprecated Manifest V2 for Chrome extensions in favour of Manifest V3. So while Firefox supports both Manifest V2 and Manifest V3 extensions, Chrome will only support Manifest V3 moving forward. Among other changes, Manifest V3 was interfering with how Firefox prompted for required permissions. Therefore two different manifests exist in the ./manifests/ folder.
To switch manifest types before testing/building:
npm run prepare:chrome # Copies Manifest V3
npm run prepare:firefox # Copies Manifest V2
Installation
Install from Addons.Mozilla.Org (AMO)
Install through the official Firefox Add-ons Web Store link.
Firefox Temporary Add-on (For testing purposes)
  1. Download this repo as a .zip file
  2. Unzip the file. The folder is loopcontrol-main
  3. Change into the directory with cd loopcontrol
  4. Copy the proper manifest version for Firefox with npm run prepare:firefox
  5. In Firefox, go to about:debugging
  6. Click on This Firefox -> Load Temporary Add-on
  7. Select manifest.json within the loopcontrol-main folder
Chrome Temporary Add-on (For testing purposes)
  1. Download this repo as a .zip file
  2. Unzip the file. The folder is loopcontrol-main
  3. Change into the directory with cd loopcontrol
  4. Copy the proper manifest version for Chrome with npm run prepare:chrome
  5. In Chrome, go to chrome://extensions
  6. Enable Developer Mode in the top-right
  7. Click 'Load unpacked extension...'
  8. Select the loopcontrol-main folder
Testing
  1. Change into the project directory with cd loopcontrol
  2. Install test dependencies with npm install
  3. Run the automated Jest tests with npm test
To-do
  •  48x48 and 128x128 logos for Chrome store
Credit
Huge thanks to Video Speed Controller, the Firefox fork (seemingly abandoned) and the more updated gediminasel fork with a few helpful fixes. The loop UI and settings pages were adapted from these extensions.
Credit to Samplelib's videos for the test .mp4.
Extension icon created by Pixel perfect - Flaticon
Mockup assets used in extension listings from MockupDen and Shaping Rain
About
A Firefox and Chrome extension that lets you loop specific sections of any HTML 5 video.
Topics
browser-extensionchrome-extensionextensionhtml5-videojavascriptvideoweb-extension
Resources
Readme
MIT license
Activity
Stars
6 stars
Watchers
1 watching
Forks
0 forks
Report repository
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

Skip to content
BranchesTags
Repository files navigation
Loop Control (Video Section Loop)
Firefox AMO
CI Status
What It Does
LoopControl is a browser extension for Chrome and Firefox that lets you loop custom sections of videos - not just from the beginning to end. A controller overlays all videos, letting you set a start and end point for the loop.
Why Use It?
  • Skip the fluff - loop just the part that you care about
  • Master that recipe, riff, or dance move by repeating important sections
  • Turn any video segment into a gif-like loop
  • Utilize the visual controller overlay or keybindings
  • Works on virtually any HTML5 video across Chrome and Firefox
How?
All HTML5 videos will display a moveable and hideable controller that indicates if loops are currently toggled on or off. Here you can set the start and end times of the sections you want to loop.
loopcontrol-example
You can also manually toggle LoopControl by right-clicking the video and selecting loop.
Default Keybindings (targets the last video controller you interacted with):
  • Q - Set loop start
  • E - Set loop end
  • R - Toggle loop
  • H - Hide controller
Cross-platform Browser Support
Since 2024, Google deprecated Manifest V2 for Chrome extensions in favour of Manifest V3. So while Firefox supports both Manifest V2 and Manifest V3 extensions, Chrome will only support Manifest V3 moving forward. Among other changes, Manifest V3 was interfering with how Firefox prompted for required permissions. Therefore two different manifests exist in the ./manifests/ folder.
To switch manifest types before testing/building:
npm run prepare:chrome # Copies Manifest V3
npm run prepare:firefox # Copies Manifest V2
Installation
Install from Addons.Mozilla.Org (AMO)
Install through the official Firefox Add-ons Web Store link.
Firefox Temporary Add-on (For testing purposes)
  1. Download this repo as a .zip file
  2. Unzip the file. The folder is loopcontrol-main
  3. Change into the directory with cd loopcontrol
  4. Copy the proper manifest version for Firefox with npm run prepare:firefox
  5. In Firefox, go to about:debugging
  6. Click on This Firefox -> Load Temporary Add-on
  7. Select manifest.json within the loopcontrol-main folder
Chrome Temporary Add-on (For testing purposes)
  1. Download this repo as a .zip file
  2. Unzip the file. The folder is loopcontrol-main
  3. Change into the directory with cd loopcontrol
  4. Copy the proper manifest version for Chrome with npm run prepare:chrome
  5. In Chrome, go to chrome://extensions
  6. Enable Developer Mode in the top-right
  7. Click 'Load unpacked extension...'
  8. Select the loopcontrol-main folder
Testing
  1. Change into the project directory with cd loopcontrol
  2. Install test dependencies with npm install
  3. Run the automated Jest tests with npm test
To-do
  •  48x48 and 128x128 logos for Chrome store
Credit
Huge thanks to Video Speed Controller, the Firefox fork (seemingly abandoned) and the more updated gediminasel fork with a few helpful fixes. The loop UI and settings pages were adapted from these extensions.
Credit to Samplelib's videos for the test .mp4.
Extension icon created by Pixel perfect - Flaticon
Mockup assets used in extension listings from MockupDen and Shaping Rain
About
A Firefox and Chrome extension that lets you loop specific sections of any HTML 5 video.
Topics
browser-extensionchrome-extensionextensionhtml5-videojavascriptvideoweb-extension
Resources
Readme
MIT license
Activity
Stars
6 stars
Watchers
1 watching
Forks
0 forks
Report repository
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
Loop Control (Video Section Loop)
Firefox AMO
CI Status
What It Does
LoopControl is a browser extension for Chrome and Firefox that lets you loop custom sections of videos - not just from the beginning to end. A controller overlays all videos, letting you set a start and end point for the loop.
Why Use It?
  • Skip the fluff - loop just the part that you care about
  • Master that recipe, riff, or dance move by repeating important sections
  • Turn any video segment into a gif-like loop
  • Utilize the visual controller overlay or keybindings
  • Works on virtually any HTML5 video across Chrome and Firefox
How?
All HTML5 videos will display a moveable and hideable controller that indicates if loops are currently toggled on or off. Here you can set the start and end times of the sections you want to loop.
loopcontrol-example
You can also manually toggle LoopControl by right-clicking the video and selecting loop.
Default Keybindings (targets the last video controller you interacted with):
  • Q - Set loop start
  • E - Set loop end
  • R - Toggle loop
  • H - Hide controller
Cross-platform Browser Support
Since 2024, Google deprecated Manifest V2 for Chrome extensions in favour of Manifest V3. So while Firefox supports both Manifest V2 and Manifest V3 extensions, Chrome will only support Manifest V3 moving forward. Among other changes, Manifest V3 was interfering with how Firefox prompted for required permissions. Therefore two different manifests exist in the ./manifests/ folder.
To switch manifest types before testing/building:
npm run prepare:chrome # Copies Manifest V3
npm run prepare:firefox # Copies Manifest V2
Installation
Install from Addons.Mozilla.Org (AMO)
Install through the official Firefox Add-ons Web Store link.
Firefox Temporary Add-on (For testing purposes)
  1. Download this repo as a .zip file
  2. Unzip the file. The folder is loopcontrol-main
  3. Change into the directory with cd loopcontrol
  4. Copy the proper manifest version for Firefox with npm run prepare:firefox
  5. In Firefox, go to about:debugging
  6. Click on This Firefox -> Load Temporary Add-on
  7. Select manifest.json within the loopcontrol-main folder
Chrome Temporary Add-on (For testing purposes)
  1. Download this repo as a .zip file
  2. Unzip the file. The folder is loopcontrol-main
  3. Change into the directory with cd loopcontrol
  4. Copy the proper manifest version for Chrome with npm run prepare:chrome
  5. In Chrome, go to chrome://extensions
  6. Enable Developer Mode in the top-right
  7. Click 'Load unpacked extension...'
  8. Select the loopcontrol-main folder
Testing
  1. Change into the project directory with cd loopcontrol
  2. Install test dependencies with npm install
  3. Run the automated Jest tests with npm test
To-do
  •  48x48 and 128x128 logos for Chrome store
Credit
Huge thanks to Video Speed Controller, the Firefox fork (seemingly abandoned) and the more updated gediminasel fork with a few helpful fixes. The loop UI and settings pages were adapted from these extensions.
Credit to Samplelib's videos for the test .mp4.
Extension icon created by Pixel perfect - Flaticon
Mockup assets used in extension listings from MockupDen and Shaping Rain
About
A Firefox and Chrome extension that lets you loop specific sections of any HTML 5 video.
Topics
browser-extensionchrome-extensionextensionhtml5-videojavascriptvideoweb-extension
Resources
Readme
MIT license
Activity
Stars
6 stars
Watchers
1 watching
Forks
0 forks
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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Loop Control (Video Section Loop)
Firefox AMO
CI Status
What It Does
LoopControl is a browser extension for Chrome and Firefox that lets you loop custom sections of videos - not just from the beginning to end. A controller overlays all videos, letting you set a start and end point for the loop.
Why Use It?
  • Skip the fluff - loop just the part that you care about
  • Master that recipe, riff, or dance move by repeating important sections
  • Turn any video segment into a gif-like loop
  • Utilize the visual controller overlay or keybindings
  • Works on virtually any HTML5 video across Chrome and Firefox
How?
All HTML5 videos will display a moveable and hideable controller that indicates if loops are currently toggled on or off. Here you can set the start and end times of the sections you want to loop.
loopcontrol-example
You can also manually toggle LoopControl by right-clicking the video and selecting loop.
Default Keybindings (targets the last video controller you interacted with):
  • Q - Set loop start
  • E - Set loop end
  • R - Toggle loop
  • H - Hide controller
Cross-platform Browser Support
Since 2024, Google deprecated Manifest V2 for Chrome extensions in favour of Manifest V3. So while Firefox supports both Manifest V2 and Manifest V3 extensions, Chrome will only support Manifest V3 moving forward. Among other changes, Manifest V3 was interfering with how Firefox prompted for required permissions. Therefore two different manifests exist in the ./manifests/ folder.
To switch manifest types before testing/building:
npm run prepare:chrome # Copies Manifest V3
npm run prepare:firefox # Copies Manifest V2
Installation
Install from Addons.Mozilla.Org (AMO)
Install through the official Firefox Add-ons Web Store link.
Firefox Temporary Add-on (For testing purposes)
  1. Download this repo as a .zip file
  2. Unzip the file. The folder is loopcontrol-main
  3. Change into the directory with cd loopcontrol
  4. Copy the proper manifest version for Firefox with npm run prepare:firefox
  5. In Firefox, go to about:debugging
  6. Click on This Firefox -> Load Temporary Add-on
  7. Select manifest.json within the loopcontrol-main folder
Chrome Temporary Add-on (For testing purposes)
  1. Download this repo as a .zip file
  2. Unzip the file. The folder is loopcontrol-main
  3. Change into the directory with cd loopcontrol
  4. Copy the proper manifest version for Chrome with npm run prepare:chrome
  5. In Chrome, go to chrome://extensions
  6. Enable Developer Mode in the top-right
  7. Click 'Load unpacked extension...'
  8. Select the loopcontrol-main folder
Testing
  1. Change into the project directory with cd loopcontrol
  2. Install test dependencies with npm install
  3. Run the automated Jest tests with npm test
To-do
  •  48x48 and 128x128 logos for Chrome store
Credit
Huge thanks to Video Speed Controller, the Firefox fork (seemingly abandoned) and the more updated gediminasel fork with a few helpful fixes. The loop UI and settings pages were adapted from these extensions.
Credit to Samplelib's videos for the test .mp4.
Extension icon created by Pixel perfect - Flaticon
Mockup assets used in extension listings from MockupDen and Shaping Rain
About
A Firefox and Chrome extension that lets you loop specific sections of any HTML 5 video.
Topics
browser-extensionchrome-extensionextensionhtml5-videojavascriptvideoweb-extension
Resources
Readme
MIT license
Activity
Stars
6 stars
Watchers
1 watching
Forks
0 forks
Report repository
Used by
Contributors
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

Skip to content
BranchesTags
Repository files navigation
Loop Control (Video Section Loop)
Firefox AMO
CI Status
What It Does
LoopControl is a browser extension for Chrome and Firefox that lets you loop custom sections of videos - not just from the beginning to end. A controller overlays all videos, letting you set a start and end point for the loop.
Why Use It?
  • Skip the fluff - loop just the part that you care about
  • Master that recipe, riff, or dance move by repeating important sections
  • Turn any video segment into a gif-like loop
  • Utilize the visual controller overlay or keybindings
  • Works on virtually any HTML5 video across Chrome and Firefox
How?
All HTML5 videos will display a moveable and hideable controller that indicates if loops are currently toggled on or off. Here you can set the start and end times of the sections you want to loop.
loopcontrol-example
You can also manually toggle LoopControl by right-clicking the video and selecting loop.
Default Keybindings (targets the last video controller you interacted with):
  • Q - Set loop start
  • E - Set loop end
  • R - Toggle loop
  • H - Hide controller
Cross-platform Browser Support
Since 2024, Google deprecated Manifest V2 for Chrome extensions in favour of Manifest V3. So while Firefox supports both Manifest V2 and Manifest V3 extensions, Chrome will only support Manifest V3 moving forward. Among other changes, Manifest V3 was interfering with how Firefox prompted for required permissions. Therefore two different manifests exist in the ./manifests/ folder.
To switch manifest types before testing/building:
npm run prepare:chrome # Copies Manifest V3
npm run prepare:firefox # Copies Manifest V2
Installation
Install from Addons.Mozilla.Org (AMO)
Install through the official Firefox Add-ons Web Store link.
Firefox Temporary Add-on (For testing purposes)
  1. Download this repo as a .zip file
  2. Unzip the file. The folder is loopcontrol-main
  3. Change into the directory with cd loopcontrol
  4. Copy the proper manifest version for Firefox with npm run prepare:firefox
  5. In Firefox, go to about:debugging
  6. Click on This Firefox -> Load Temporary Add-on
  7. Select manifest.json within the loopcontrol-main folder
Chrome Temporary Add-on (For testing purposes)
  1. Download this repo as a .zip file
  2. Unzip the file. The folder is loopcontrol-main
  3. Change into the directory with cd loopcontrol
  4. Copy the proper manifest version for Chrome with npm run prepare:chrome
  5. In Chrome, go to chrome://extensions
  6. Enable Developer Mode in the top-right
  7. Click 'Load unpacked extension...'
  8. Select the loopcontrol-main folder
Testing
  1. Change into the project directory with cd loopcontrol
  2. Install test dependencies with npm install
  3. Run the automated Jest tests with npm test
To-do
  •  48x48 and 128x128 logos for Chrome store
Credit
Huge thanks to Video Speed Controller, the Firefox fork (seemingly abandoned) and the more updated gediminasel fork with a few helpful fixes. The loop UI and settings pages were adapted from these extensions.
Credit to Samplelib's videos for the test .mp4.
Extension icon created by Pixel perfect - Flaticon
Mockup assets used in extension listings from MockupDen and Shaping Rain
About
A Firefox and Chrome extension that lets you loop specific sections of any HTML 5 video.
Topics
browser-extensionchrome-extensionextensionhtml5-videojavascriptvideoweb-extension
Resources
Readme
MIT license
Activity
Stars
6 stars
Watchers
1 watching
Forks
0 forks
Report repository
Used by
Contributors
Languages