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Paul IrishPaul Irish Paul Irish Making the www great RSS Blog Archives About Contact Video Stabilization With `ffmpeg` and `VidStab` Apr 30th, 2021 Way back in Dec 2015, @maxogden wrote a nice guide on stabilizing your own video with ffmpeg. I return to it on occasion and have updated my gist comment to offer some updated commands. Since enough has changed regarding installation and use, I figure a new, spiffy, and working guide deserves a non-gist home. Presenting the 2021-era guide to pretty easy DIY video stabilization! On Mac OS, install ffmpeg and vidstab from homebrew: 1 2 brew install ffmpeg brew install libvidstab On linux, you can sudo make install. Run stabilization in two passes There are plenty of options for libvidstab, like shakiness, accuracy, smoothing. The defaults are good, but you may want to experiment. There’s even a visual diagnostic mode. Assuming the source video is named clip.mkv… 1 2 3 4 5 6 # The first pass ('detect') generates stabilization data and saves to `transforms.trf` # The `-f null -` tells ffmpeg there's no output video file ffmpeg -i clip.mkv -vf vidstabdetect -f null - # The second pass ('transform') uses the .trf and creates the new stabilized video. ffmpeg -i clip.mkv -vf vidstabtransform clip-stabilized.mkv You now have a clip-stabilized.mkv! Bonus: create a comparison video Use the vstack or hstack filter, depending on if you want them stacked vertically or side-by-side: 1 2 3 4 5 # vertically stacked ffmpeg -i clip.mkv -i clip-stabilized.mkv -filter_complex vstack clips-stacked.mkv # side-by-side ffmpeg -i clip.mkv -i clip-stabilized.mkv -filter_complex hstack clips-sxs.mkv Double bonus: A two-liner that does everything (because repeating these filenames gets annoying) 1 2 export vid="sourcevid.mkv" ffmpeg -i "$vid" -vf vidstabdetect -f null -; ffmpeg -i "$vid" -vf vidstabtransform "$vid.stab.mkv"; ffmpeg -i "$vid" -i "$vid.stab.mkv" -filter_complex vstack "$vid.stacked.mkv" rAF Internals & Node Debugging Guide Feb 28th, 2018 I’ve published a few articles on Medium that may interest the reader here: requestAnimationFrame Scheduling For Nerds Understand how rAF callbacks are scheduled and why its very reasonable to have multiple callbacks execute within the same frame. Debugging Node.js with Chrome DevTools The canonical guide to using the Chrome DevTools UI for debugging Node.js. It definitely beats console.log. ;) Aside from that, I’ve been busy working on Lighthouse, performance metrics, tooling, and DevTools. Advanced Performance Audits With DevTools Mar 27th, 2015 Recently, I’ve spent some time recently profiling real-world mobile websites. Using the 1000/100/6 performance model1, and spelunking deep into each app, the findings have been fascinating. I’ve written up case study documents for each, incorporating all the findings: Illustrated diagnoses for the poor performance What actions the developer should take How Chrome’s tooling should improve Questions and insights for the rendering engine (Blink) ➜ Perf Audits: CNet, Time, Google Play In this doc, we look at the scrolling of CNET, input latency on CNET, some very interesting challenges on the responsive Time.com, and infinite scroll on Google Play’s desktop site. The intended audience is browser engineers and performance-minded frontend developers. It’s fairly advanced, but I’m spelunking deep to identify how the sites butt heads with the browser APIs and architecture. Lastly, we’re using this research to improve Chrome DevTools and what you hear from Chrome. Wikipedia eng team scrutinizing their performance millisecond by millisecond. (Yes, it’s a long paper printout of the Chrome DevTools timeline flamechart :) (BTW, use this link to view the same doc but with comments enabled) 1 - More on this performance model later. Stay tuned. ← Older Blog Archives Heyo, I’m a front-end developer, and work on the Google Chrome team focused on Developer Tooling. I live in the Bay Area, California. Contact me or read more about me Follow @paul_irish@toot.cafe (I don’t use my twitter anymore) Popular Posts Video Stabilization with `ffmpeg` and `VidStab` What does your sleeping style say about you? “We can’t your recycle single serve coffee packets. Let me share why…” Algorithmically matched to myself. Why I won’t buy another hard drive Paul Irish doesn't care about attribution, b. — It's all yours under Creative Commons CC0.enen1730410741https://paulirish.com

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