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SmoothLapse

Smooth 3D printer timelapses without any g-code modification. By selecting similar frames from a higher fps video, SmoothLapse outputs a faster and smoother timelapse.

Demos

SmoothLapse Demo #1: Smooth 3d printed timelapses

SmoothLapse Demo #2: Smooth 3d printed timelapses

Notes

  • The algorithm works by splitting the frames into "frame groups", for each frame group we pick the frame that most closely matches the last few frames ("lookback"). We do this for all possible initial frames. The number of possible initial frames is equal to the "group size". "Group size" is also effectively the factor by which the video is sped up.
  • I've personally found that 2*(total frames)/(total layers) is a good group size. Although this is likely not the optimum and your results may vary. It's best to try different values for yourself. Lookback of 5 has proven to be a good balance of performance and quality.
  • At this stage, SmoothLapse is still a work in progress and proof of concept.
  • Lots of experimentation is still required to develop a faster and better performing algorithm.
  • Smoothlapse is currently quite slow. Profiling it proves that most of the time is spent comparing frames and loading the video. Although I've been focusing on optimizing single-thread performance, the code is written to make multiprocessing easy to implement. It is the logical next step, and will greatly improve the computation speed.

Requirements

  • Python 3.7

How to

Windows CLI

git clone https://github.com/SilentSys/SmoothLapse.git SmoothLapse
cd SmoothLapse
python -m venv venv
venv\Scripts\activate.bat
pip install -r requirements.txt
python smoothlapse.py input.mpg output.mp4 10 10

Ubuntu 19.10 CLI

git clone https://github.com/SilentSys/SmoothLapse.git SmoothLapse
cd SmoothLapse
python3 -m venv venv
source venv/Scripts/activate
pip install -r requirements.txt
python smoothlapse.py input.mpg output.mp4 10 10

About

Smooth 3D printer timelapses without any g-code modification

Resources

Readme
GPL-3.0 license
Activity

Stars

14 stars

Watchers

4 watching

Forks

1 fork
Report repository

Releases

Packages

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
SmoothLapse
Smooth 3D printer timelapses without any g-code modification. By selecting similar frames from a higher fps video, SmoothLapse outputs a faster and smoother timelapse.
Demos
SmoothLapse Demo #1: Smooth 3d printed timelapses
SmoothLapse Demo #2: Smooth 3d printed timelapses
Notes
  • The algorithm works by splitting the frames into "frame groups", for each frame group we pick the frame that most closely matches the last few frames ("lookback"). We do this for all possible initial frames. The number of possible initial frames is equal to the "group size". "Group size" is also effectively the factor by which the video is sped up.
  • I've personally found that 2*(total frames)/(total layers) is a good group size. Although this is likely not the optimum and your results may vary. It's best to try different values for yourself. Lookback of 5 has proven to be a good balance of performance and quality.
  • At this stage, SmoothLapse is still a work in progress and proof of concept.
  • Lots of experimentation is still required to develop a faster and better performing algorithm.
  • Smoothlapse is currently quite slow. Profiling it proves that most of the time is spent comparing frames and loading the video. Although I've been focusing on optimizing single-thread performance, the code is written to make multiprocessing easy to implement. It is the logical next step, and will greatly improve the computation speed.
Requirements
  • Python 3.7
How to
Windows CLI
git clone https://github.com/SilentSys/SmoothLapse.git SmoothLapse
cd SmoothLapse
python -m venv venv
venv\Scripts\activate.bat
pip install -r requirements.txt
python smoothlapse.py input.mpg output.mp4 10 10

Ubuntu 19.10 CLI
git clone https://github.com/SilentSys/SmoothLapse.git SmoothLapse
cd SmoothLapse
python3 -m venv venv
source venv/Scripts/activate
pip install -r requirements.txt
python smoothlapse.py input.mpg output.mp4 10 10

About
Smooth 3D printer timelapses without any g-code modification
Resources
Readme
GPL-3.0 license
Activity
Stars
14 stars
Watchers
4 watching
Forks
1 fork
Report repository
Releases
Packages
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
SmoothLapse
Smooth 3D printer timelapses without any g-code modification. By selecting similar frames from a higher fps video, SmoothLapse outputs a faster and smoother timelapse.
Demos
SmoothLapse Demo #1: Smooth 3d printed timelapses
SmoothLapse Demo #2: Smooth 3d printed timelapses
Notes
  • The algorithm works by splitting the frames into "frame groups", for each frame group we pick the frame that most closely matches the last few frames ("lookback"). We do this for all possible initial frames. The number of possible initial frames is equal to the "group size". "Group size" is also effectively the factor by which the video is sped up.
  • I've personally found that 2*(total frames)/(total layers) is a good group size. Although this is likely not the optimum and your results may vary. It's best to try different values for yourself. Lookback of 5 has proven to be a good balance of performance and quality.
  • At this stage, SmoothLapse is still a work in progress and proof of concept.
  • Lots of experimentation is still required to develop a faster and better performing algorithm.
  • Smoothlapse is currently quite slow. Profiling it proves that most of the time is spent comparing frames and loading the video. Although I've been focusing on optimizing single-thread performance, the code is written to make multiprocessing easy to implement. It is the logical next step, and will greatly improve the computation speed.
Requirements
  • Python 3.7
How to
Windows CLI
git clone https://github.com/SilentSys/SmoothLapse.git SmoothLapse
cd SmoothLapse
python -m venv venv
venv\Scripts\activate.bat
pip install -r requirements.txt
python smoothlapse.py input.mpg output.mp4 10 10

Ubuntu 19.10 CLI
git clone https://github.com/SilentSys/SmoothLapse.git SmoothLapse
cd SmoothLapse
python3 -m venv venv
source venv/Scripts/activate
pip install -r requirements.txt
python smoothlapse.py input.mpg output.mp4 10 10

About
Smooth 3D printer timelapses without any g-code modification
Resources
Readme
GPL-3.0 license
Activity
Stars
14 stars
Watchers
4 watching
Forks
1 fork
Report repository
Releases
Packages
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
SmoothLapse
Smooth 3D printer timelapses without any g-code modification. By selecting similar frames from a higher fps video, SmoothLapse outputs a faster and smoother timelapse.
Demos
SmoothLapse Demo #1: Smooth 3d printed timelapses
SmoothLapse Demo #2: Smooth 3d printed timelapses
Notes
  • The algorithm works by splitting the frames into "frame groups", for each frame group we pick the frame that most closely matches the last few frames ("lookback"). We do this for all possible initial frames. The number of possible initial frames is equal to the "group size". "Group size" is also effectively the factor by which the video is sped up.
  • I've personally found that 2*(total frames)/(total layers) is a good group size. Although this is likely not the optimum and your results may vary. It's best to try different values for yourself. Lookback of 5 has proven to be a good balance of performance and quality.
  • At this stage, SmoothLapse is still a work in progress and proof of concept.
  • Lots of experimentation is still required to develop a faster and better performing algorithm.
  • Smoothlapse is currently quite slow. Profiling it proves that most of the time is spent comparing frames and loading the video. Although I've been focusing on optimizing single-thread performance, the code is written to make multiprocessing easy to implement. It is the logical next step, and will greatly improve the computation speed.
Requirements
  • Python 3.7
How to
Windows CLI
git clone https://github.com/SilentSys/SmoothLapse.git SmoothLapse
cd SmoothLapse
python -m venv venv
venv\Scripts\activate.bat
pip install -r requirements.txt
python smoothlapse.py input.mpg output.mp4 10 10

Ubuntu 19.10 CLI
git clone https://github.com/SilentSys/SmoothLapse.git SmoothLapse
cd SmoothLapse
python3 -m venv venv
source venv/Scripts/activate
pip install -r requirements.txt
python smoothlapse.py input.mpg output.mp4 10 10

About
Smooth 3D printer timelapses without any g-code modification
Resources
Readme
GPL-3.0 license
Activity
Stars
14 stars
Watchers
4 watching
Forks
1 fork
Report repository
Releases
Packages
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
SmoothLapse
Smooth 3D printer timelapses without any g-code modification. By selecting similar frames from a higher fps video, SmoothLapse outputs a faster and smoother timelapse.
Demos
SmoothLapse Demo #1: Smooth 3d printed timelapses
SmoothLapse Demo #2: Smooth 3d printed timelapses
Notes
  • The algorithm works by splitting the frames into "frame groups", for each frame group we pick the frame that most closely matches the last few frames ("lookback"). We do this for all possible initial frames. The number of possible initial frames is equal to the "group size". "Group size" is also effectively the factor by which the video is sped up.
  • I've personally found that 2*(total frames)/(total layers) is a good group size. Although this is likely not the optimum and your results may vary. It's best to try different values for yourself. Lookback of 5 has proven to be a good balance of performance and quality.
  • At this stage, SmoothLapse is still a work in progress and proof of concept.
  • Lots of experimentation is still required to develop a faster and better performing algorithm.
  • Smoothlapse is currently quite slow. Profiling it proves that most of the time is spent comparing frames and loading the video. Although I've been focusing on optimizing single-thread performance, the code is written to make multiprocessing easy to implement. It is the logical next step, and will greatly improve the computation speed.
Requirements
  • Python 3.7
How to
Windows CLI
git clone https://github.com/SilentSys/SmoothLapse.git SmoothLapse
cd SmoothLapse
python -m venv venv
venv\Scripts\activate.bat
pip install -r requirements.txt
python smoothlapse.py input.mpg output.mp4 10 10

Ubuntu 19.10 CLI
git clone https://github.com/SilentSys/SmoothLapse.git SmoothLapse
cd SmoothLapse
python3 -m venv venv
source venv/Scripts/activate
pip install -r requirements.txt
python smoothlapse.py input.mpg output.mp4 10 10

About
Smooth 3D printer timelapses without any g-code modification
Resources
Readme
GPL-3.0 license
Activity
Stars
14 stars
Watchers
4 watching
Forks
1 fork
Report repository
Releases
Packages
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
SmoothLapse
Smooth 3D printer timelapses without any g-code modification. By selecting similar frames from a higher fps video, SmoothLapse outputs a faster and smoother timelapse.
Demos
SmoothLapse Demo #1: Smooth 3d printed timelapses
SmoothLapse Demo #2: Smooth 3d printed timelapses
Notes
  • The algorithm works by splitting the frames into "frame groups", for each frame group we pick the frame that most closely matches the last few frames ("lookback"). We do this for all possible initial frames. The number of possible initial frames is equal to the "group size". "Group size" is also effectively the factor by which the video is sped up.
  • I've personally found that 2*(total frames)/(total layers) is a good group size. Although this is likely not the optimum and your results may vary. It's best to try different values for yourself. Lookback of 5 has proven to be a good balance of performance and quality.
  • At this stage, SmoothLapse is still a work in progress and proof of concept.
  • Lots of experimentation is still required to develop a faster and better performing algorithm.
  • Smoothlapse is currently quite slow. Profiling it proves that most of the time is spent comparing frames and loading the video. Although I've been focusing on optimizing single-thread performance, the code is written to make multiprocessing easy to implement. It is the logical next step, and will greatly improve the computation speed.
Requirements
  • Python 3.7
How to
Windows CLI
git clone https://github.com/SilentSys/SmoothLapse.git SmoothLapse
cd SmoothLapse
python -m venv venv
venv\Scripts\activate.bat
pip install -r requirements.txt
python smoothlapse.py input.mpg output.mp4 10 10

Ubuntu 19.10 CLI
git clone https://github.com/SilentSys/SmoothLapse.git SmoothLapse
cd SmoothLapse
python3 -m venv venv
source venv/Scripts/activate
pip install -r requirements.txt
python smoothlapse.py input.mpg output.mp4 10 10

About
Smooth 3D printer timelapses without any g-code modification
Resources
Readme
GPL-3.0 license
Activity
Stars
14 stars
Watchers
4 watching
Forks
1 fork
Report repository
Releases
Packages
Used by
Contributors
Languages

, '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('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
SmoothLapse
Smooth 3D printer timelapses without any g-code modification. By selecting similar frames from a higher fps video, SmoothLapse outputs a faster and smoother timelapse.
Demos
SmoothLapse Demo #1: Smooth 3d printed timelapses
SmoothLapse Demo #2: Smooth 3d printed timelapses
Notes
  • The algorithm works by splitting the frames into "frame groups", for each frame group we pick the frame that most closely matches the last few frames ("lookback"). We do this for all possible initial frames. The number of possible initial frames is equal to the "group size". "Group size" is also effectively the factor by which the video is sped up.
  • I've personally found that 2*(total frames)/(total layers) is a good group size. Although this is likely not the optimum and your results may vary. It's best to try different values for yourself. Lookback of 5 has proven to be a good balance of performance and quality.
  • At this stage, SmoothLapse is still a work in progress and proof of concept.
  • Lots of experimentation is still required to develop a faster and better performing algorithm.
  • Smoothlapse is currently quite slow. Profiling it proves that most of the time is spent comparing frames and loading the video. Although I've been focusing on optimizing single-thread performance, the code is written to make multiprocessing easy to implement. It is the logical next step, and will greatly improve the computation speed.
Requirements
  • Python 3.7
How to
Windows CLI
git clone https://github.com/SilentSys/SmoothLapse.git SmoothLapse
cd SmoothLapse
python -m venv venv
venv\Scripts\activate.bat
pip install -r requirements.txt
python smoothlapse.py input.mpg output.mp4 10 10

Ubuntu 19.10 CLI
git clone https://github.com/SilentSys/SmoothLapse.git SmoothLapse
cd SmoothLapse
python3 -m venv venv
source venv/Scripts/activate
pip install -r requirements.txt
python smoothlapse.py input.mpg output.mp4 10 10

About
Smooth 3D printer timelapses without any g-code modification
Resources
Readme
GPL-3.0 license
Activity
Stars
14 stars
Watchers
4 watching
Forks
1 fork
Report repository
Releases
Packages
Used by
Contributors
Languages

, '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
SmoothLapse
Smooth 3D printer timelapses without any g-code modification. By selecting similar frames from a higher fps video, SmoothLapse outputs a faster and smoother timelapse.
Demos
SmoothLapse Demo #1: Smooth 3d printed timelapses
SmoothLapse Demo #2: Smooth 3d printed timelapses
Notes
  • The algorithm works by splitting the frames into "frame groups", for each frame group we pick the frame that most closely matches the last few frames ("lookback"). We do this for all possible initial frames. The number of possible initial frames is equal to the "group size". "Group size" is also effectively the factor by which the video is sped up.
  • I've personally found that 2*(total frames)/(total layers) is a good group size. Although this is likely not the optimum and your results may vary. It's best to try different values for yourself. Lookback of 5 has proven to be a good balance of performance and quality.
  • At this stage, SmoothLapse is still a work in progress and proof of concept.
  • Lots of experimentation is still required to develop a faster and better performing algorithm.
  • Smoothlapse is currently quite slow. Profiling it proves that most of the time is spent comparing frames and loading the video. Although I've been focusing on optimizing single-thread performance, the code is written to make multiprocessing easy to implement. It is the logical next step, and will greatly improve the computation speed.
Requirements
  • Python 3.7
How to
Windows CLI
git clone https://github.com/SilentSys/SmoothLapse.git SmoothLapse
cd SmoothLapse
python -m venv venv
venv\Scripts\activate.bat
pip install -r requirements.txt
python smoothlapse.py input.mpg output.mp4 10 10

Ubuntu 19.10 CLI
git clone https://github.com/SilentSys/SmoothLapse.git SmoothLapse
cd SmoothLapse
python3 -m venv venv
source venv/Scripts/activate
pip install -r requirements.txt
python smoothlapse.py input.mpg output.mp4 10 10

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Smooth 3D printer timelapses without any g-code modification
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