--- title: Troubleshooting Video Delay On The Raspberry Pi | daily.dev description: MattKC tracked down a persistent 3-frame video latency issue while building a Raspberry Pi Zero 2W-based clone of the WiiU gamepad's video receiver. The delay... canonical: https://daily.dev/posts/troubleshooting-video-delay-on-the-raspberry-pi-myamzrurj twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Troubleshooting Video Delay On The Raspberry Pi | daily.dev og:description: MattKC tracked down a persistent 3-frame video latency issue while building a Raspberry Pi Zero 2W-based clone of the WiiU gamepad's video receiver. The delay... og:url: https://daily.dev/posts/troubleshooting-video-delay-on-the-raspberry-pi-myamzrurj og:image: https://api.daily.dev/og/posts/mYamZrURJ.png og:image:alt: Troubleshooting Video Delay On The Raspberry Pi og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Troubleshooting Video Delay On The Raspberry Pi **[Hackaday](https://daily.dev/sources/hackaday)** · 2 min read · 0 upvotes · 0 comments ## Summary MattKC tracked down a persistent 3-frame video latency issue while building a Raspberry Pi Zero 2W-based clone of the WiiU gamepad's video receiver. The delay turned out to be time-based rather than frame-based, roughly 50ms, caused by the first decoded frame taking much longer (about 50ms) than subsequent frames (as little as 5ms). His code wasn't pulling frames from the decoder as soon as they were ready, so the initial lag carried through the whole pipeline. Polling the decoder more aggressively fixed the issue, letting the Pi Zero 2W match the responsiveness of the original WiiU gamepad. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### Why does my video decoder pipeline on a Raspberry Pi have a fixed few-frame latency that won't go away? The delay is often time-based rather than frame-count based. In one WiiU gamepad clone project on a Raspberry Pi Zero 2W, the first decoded frame took about 50 milliseconds while later frames took as little as 5 milliseconds, and code that didn't pull frames from the decoder as soon as they were ready let that initial lag carry forward through the whole pipeline. Polling the decoder promptly for completed frames resolved the stuck latency. _Anyone chasing similar decoder latency bugs on embedded video pipelines can find hands-on debugging writeups like this through daily.dev._ ## Similar posts on daily.dev - [Linux gamers have dealt with hidden input lag for years, and someone finally figured out why](https://daily.dev/posts/linux-gamers-have-dealt-with-hidden-input-lag-for-years-and-someone-finally-figured-out-why-fxfnxqssh) · XDA Developers · 6 upvotes · 0 comments - [60fps Video on a CGA?](https://daily.dev/posts/60fps-video-on-a-cga--6dmcdlx1s) · Two Stop Bits · 0 upvotes · 0 comments - [Turns Out Wayland Isn't the Input Lag Disaster Everyone Says it is](https://daily.dev/posts/turns-out-wayland-isn-t-the-input-lag-disaster-everyone-says-it-is-inq9dpjvv) · It's Foss · 18 upvotes · 1 comments - [Solve Your TTL Video Woes With An RP2350](https://daily.dev/posts/solve-your-ttl-video-woes-with-an-rp2350-lnsrj8zzl) · Hackaday · 0 upvotes · 0 comments - [Measuring input latency on Linux: X11 vs Wayland, VRR, and DXVK](https://daily.dev/posts/measuring-input-latency-on-linux-x11-vs-wayland-vrr-and-dxvk-omvfjgq35) · Hacker News · 0 upvotes · 0 comments --- Tags: [#embedded](https://daily.dev/tags/embedded), [#raspberry-pi](https://daily.dev/tags/raspberry-pi) [View this post on daily.dev](https://daily.dev/posts/troubleshooting-video-delay-on-the-raspberry-pi-myamzrurj) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Troubleshooting Video Delay On The Raspberry Pi","url":"https://daily.dev/posts/troubleshooting-video-delay-on-the-raspberry-pi-myamzrurj","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/troubleshooting-video-delay-on-the-raspberry-pi-myamzrurj"},"datePublished":"2026-08-13T23:25:58.183Z","dateModified":"2026-08-13T23:34:14.308Z","description":"MattKC tracked down a persistent 3-frame video latency issue while building a Raspberry Pi Zero 2W-based clone of the WiiU gamepad's video receiver. 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In one WiiU gamepad clone project on a Raspberry Pi Zero 2W, the first decoded frame took about 50 milliseconds while later frames took as little as 5 milliseconds, and code that didn't pull frames from the decoder as soon as they were ready let that initial lag carry forward through the whole pipeline. Polling the decoder promptly for completed frames resolved the stuck latency. Anyone chasing similar decoder latency bugs on embedded video pipelines can find hands-on debugging writeups like this through daily.dev."}}]} ```