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<link rel="search" type="application/opensearchdescription+xml" title="Frigate" href="/frigate/opensearch.xml"><title data-react-helmet="true">Detectors | Frigate</title><meta data-react-helmet="true" name="twitter:card" content="summary_large_image"><meta data-react-helmet="true" name="docsearch:language" content="en"><meta data-react-helmet="true" name="docsearch:version" content="current"><meta data-react-helmet="true" name="docsearch:docusaurus_tag" content="docs-default-current"><meta data-react-helmet="true" property="og:title" content="Detectors | Frigate"><meta data-react-helmet="true" name="description" content="The default config will look for a USB Coral device. If you do not have a Coral, you will need to configure a CPU detector. If you have PCI or multiple Coral devices, you need to configure your detector devices in the config file. When using multiple detectors, they run in dedicated processes, but pull from a common queue of requested detections across all cameras."><meta data-react-helmet="true" property="og:description" content="The default config will look for a USB Coral device. If you do not have a Coral, you will need to configure a CPU detector. If you have PCI or multiple Coral devices, you need to configure your detector devices in the config file. When using multiple detectors, they run in dedicated processes, but pull from a common queue of requested detections across all cameras."><meta data-react-helmet="true" property="og:url" content="https://blakeblackshear.github.io/frigate/configuration/detectors"><link data-react-helmet="true" rel="shortcut icon" href="/frigate/img/favicon.ico"><link data-react-helmet="true" rel="preconnect" href="https://BH4D9OD16A-dsn.algolia.net" crossorigin="anonymous"><link data-react-helmet="true" rel="canonical" href="https://blakeblackshear.github.io/frigate/configuration/detectors"><link rel="stylesheet" href="/frigate/styles.4dd8d972.css">
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0"></path></g></svg></button></div></div><main class="docMainContainer_2iGs"><div class="container padding-vert--lg docItemWrapper_1bxp"><div class="row"><div class="col docItemCol_U38p"><div class="docItemContainer_a7m4"><article><header><h1 class="docTitle_Oumm">Detectors</h1></header><div class="markdown"><p>The default config will look for a USB Coral device. If you do not have a Coral, you will need to configure a CPU detector. If you have PCI or multiple Coral devices, you need to configure your detector devices in the config file. When using multiple detectors, they run in dedicated processes, but pull from a common queue of requested detections across all cameras.</p><p>Frigate supports <code>edgetpu</code> and <code>cpu</code> as detector types. The device value should be specified according to the <a href="https://coral.ai/docs/edgetpu/multiple-edgetpu/#using-the-tensorflow-lite-python-api" target="_blank" rel="noopener noreferrer">Documentation for the TensorFlow Lite Python API</a>.</p><p><strong>Note</strong>: There is no support for Nvidia GPUs to perform object detection with tensorflow. It can be used for ffmpeg decoding, but not object detection.</p><p>Single USB Coral:</p><div class="mdxCodeBlock_1zKU"><div class="codeBlockContent_actS"><div tabindex="0" class="prism-code language-yaml codeBlock_tuNs thin-scrollbar"><div class="codeBlockLines_3uvA" style="color:#bfc7d5;background-color:#292d3e"><div class="token-line" style="color:#bfc7d5"><span class="token key atrule">detectors</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token key atrule">coral</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token key atrule">type</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> edgetpu</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token key atrule">device</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> usb</span></div></div></div><button type="button" aria-label="Copy code to clipboard" class="copyButton_2GIj">Copy</button></div></div><p>Multiple USB Corals:</p><div class="mdxCodeBlock_1zKU"><div class="codeBlockContent_actS"><div tabindex="0" class="prism-code language-yaml codeBlock_tuNs thin-scrollbar"><div class="codeBlockLines_3uvA" style="color:#bfc7d5;background-color:#292d3e"><div class="token-line" style="color:#bfc7d5"><span class="token key atrule">detectors</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token key atrule">coral1</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token key atrule">type</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> edgetpu</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token key atrule">device</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> usb</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token number" style="color:rgb(247, 140, 108)">0</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token key atrule">coral2</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token key atrule">type</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> edgetpu</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token key atrule">device</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> usb</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token number" style="color:rgb(247, 140, 108)">1</span></div></div></div><button type="button" aria-label="Copy code to clipboard" class="copyButton_2GIj">Copy</button></div></div><p>Mixing Corals:</p><div class="mdxCodeBlock_1zKU"><div class="codeBlockContent_actS"><div tabindex="0" class="prism-code language-yaml codeBlock_tuNs thin-scrollbar"><div class="codeBlockLines_3uvA" style="color:#bfc7d5;background-color:#292d3e"><div class="token-line" style="color:#bfc7d5"><span class="token key atrule">detectors</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token key atrule">coral_usb</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token key atrule">type</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> edgetpu</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token key atrule">device</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> usb</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token key atrule">coral_pci</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token key atrule">type</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> edgetpu</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token key atrule">device</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> pci</span></div></div></div><button type="button" aria-label="Copy code to clipboard" class="copyButton_2GIj">Copy</button></div></div><p>CPU Detectors (not recommended):</p><div class="mdxCodeBlock_1zKU"><div class="codeBlockContent_actS"><div tabindex="0" class="prism-code language-yaml codeBlock_tuNs thin-scrollbar"><div class="codeBlockLines_3uvA" style="color:#bfc7d5;background-color:#292d3e"><div class="token-line" style="color:#bfc7d5"><span class="token key atrule">detectors</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token key atrule">cpu1</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token key atrule">type</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> cpu</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token key atrule">cpu2</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token key atrule">type</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> cpu</span></div></div></div><button type="button" aria-label="Copy code to clipboard" class="copyButton_2GIj">Copy</button></div></div></div></article><div class="margin-vert--xl"><div class="row"><div class="col"><a href="https://github.com/blakeblackshear/frigate/edit/master/docs/docs/configuration/detectors.md" target="_blank" rel="noreferrer noopener"><svg fill="currentColor" height="1.2em" width="1.2em" preserveAspectRatio="xMidYMid meet" role="img" viewBox="0 0 40 40" class="iconEdit_2LL7"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></div></div><div class="margin-vert--lg"><nav class="pagination-nav" aria-label="Blog list page 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