{"id":69,"date":"2026-01-01T16:05:54","date_gmt":"2026-01-01T15:05:54","guid":{"rendered":"https:\/\/chainesteve.be\/?p=69"},"modified":"2026-01-02T13:18:24","modified_gmt":"2026-01-02T12:18:24","slug":"acceleration-materielle-plex-boostez-vraiment-les-performances-de-votre-nas-diy","status":"publish","type":"post","link":"https:\/\/chainesteve.be\/index.php\/2026\/01\/01\/acceleration-materielle-plex-boostez-vraiment-les-performances-de-votre-nas-diy\/","title":{"rendered":"Acc\u00e9l\u00e9ration mat\u00e9rielle Plex : boostez vraiment les performances de votre NAS DIY"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Introduction<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Si vous utilisez <strong>Plex<\/strong> sur un <strong>NAS DIY<\/strong> (fait maison) et que votre serveur commence \u00e0 tousser d\u00e8s que plusieurs personnes regardent des vid\u00e9os en m\u00eame temps, cet article est fait pour vous.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nous allons voir <strong>comment activer l\u2019acc\u00e9l\u00e9ration mat\u00e9rielle dans Plex<\/strong>, \u00e9tape par \u00e9tape, <strong>sous Linux<\/strong>, avec un langage clair et accessible, m\u00eame si vous venez de Windows et que la ligne de commande vous intimide.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 Cet article est la version \u00e9crite, d\u00e9taill\u00e9e et durable de la vid\u00e9o YouTube :<br>\ud83c\udfac <strong>Acc\u00e9l\u00e9ration Mat\u00e9rielle Plex : Boostez les Performances de Votre NAS DIY !<\/strong><br>\ud83d\udd17 <a href=\"https:\/\/youtu.be\/_b3-vr3GZOg?si=4vEa-dfLtHgE7gCQ\">https:\/\/youtu.be\/_b3-vr3GZOg?si=4vEa-dfLtHgE7gCQ<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u00c0 qui s\u2019adresse ce guide ?<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>D\u00e9butants complets sous Linux<\/li>\n\n\n\n<li>Utilisateurs de Plex sur NAS DIY<\/li>\n\n\n\n<li>Personnes utilisant OpenMediaVault (OMV)<br><\/li>\n\n\n\n<li>Ceux qui veulent comprendre <em>ce qu\u2019ils font<\/em>, pas juste copier-coller des commandes<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"600\" src=\"https:\/\/chainesteve.be\/wp-content\/uploads\/2026\/01\/OMV-2xl.jpg\" alt=\"\" class=\"wp-image-73\" srcset=\"https:\/\/chainesteve.be\/wp-content\/uploads\/2026\/01\/OMV-2xl.jpg 1024w, https:\/\/chainesteve.be\/wp-content\/uploads\/2026\/01\/OMV-2xl-300x176.jpg 300w, https:\/\/chainesteve.be\/wp-content\/uploads\/2026\/01\/OMV-2xl-768x450.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Comprendre le probl\u00e8me : pourquoi Plex peut ramer<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Qu\u2019est-ce que le transcodage ?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Quand vous regardez un film sur Plex depuis :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>une t\u00e9l\u00e9vision<\/li>\n\n\n\n<li>un smartphone<\/li>\n\n\n\n<li>un navigateur web<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/chainesteve.be\/wp-content\/uploads\/2026\/01\/vlcsnap-2026-01-01-15h54m52s848-1024x576.png\" alt=\"\" class=\"wp-image-71\" srcset=\"https:\/\/chainesteve.be\/wp-content\/uploads\/2026\/01\/vlcsnap-2026-01-01-15h54m52s848-1024x576.png 1024w, https:\/\/chainesteve.be\/wp-content\/uploads\/2026\/01\/vlcsnap-2026-01-01-15h54m52s848-300x169.png 300w, https:\/\/chainesteve.be\/wp-content\/uploads\/2026\/01\/vlcsnap-2026-01-01-15h54m52s848-768x432.png 768w, https:\/\/chainesteve.be\/wp-content\/uploads\/2026\/01\/vlcsnap-2026-01-01-15h54m52s848-1536x864.png 1536w, https:\/\/chainesteve.be\/wp-content\/uploads\/2026\/01\/vlcsnap-2026-01-01-15h54m52s848.png 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u2026 <strong>le fichier vid\u00e9o n\u2019est pas toujours compatible tel quel<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 Plex doit alors <strong>convertir la vid\u00e9o en temps r\u00e9el<\/strong> pour qu\u2019elle soit lisible sur l\u2019appareil utilis\u00e9.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u2019est ce qu\u2019on appelle le <strong>transcodage<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Pourquoi le transcodage fatigue le processeur (CPU)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Sans acc\u00e9l\u00e9ration mat\u00e9rielle :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Tout le travail est fait par le <strong>CPU<\/strong> (processeur)<\/li>\n\n\n\n<li>Le CPU peut vite atteindre ses limites<\/li>\n\n\n\n<li>R\u00e9sultat :\n<ul class=\"wp-block-list\">\n<li>saccades<\/li>\n\n\n\n<li>buffering<\/li>\n\n\n\n<li>serveur lent<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Et plus il y a d\u2019utilisateurs en m\u00eame temps\u2026 plus c\u2019est compliqu\u00e9.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">La solution : l\u2019acc\u00e9l\u00e9ration mat\u00e9rielle<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Principe g\u00e9n\u00e9ral<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">L\u2019<strong>acc\u00e9l\u00e9ration mat\u00e9rielle<\/strong> permet \u00e0 Plex d\u2019utiliser :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>le <strong>GPU<\/strong> (processeur graphique)<\/li>\n\n\n\n<li>ou la partie graphique int\u00e9gr\u00e9e au CPU (iGPU)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">pour effectuer le transcodage.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 Ces composants sont <strong>sp\u00e9cialis\u00e9s<\/strong> pour la vid\u00e9o.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83c\udfaf R\u00e9sultat :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>beaucoup moins de charge CPU<\/li>\n\n\n\n<li>plus de flux simultan\u00e9s<\/li>\n\n\n\n<li>un NAS plus silencieux et plus stable<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u26a0\ufe0f Conditions importantes<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Pour utiliser l\u2019acc\u00e9l\u00e9ration mat\u00e9rielle dans Plex :<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u2714\ufe0f Un <strong>Plex Pass<\/strong> (abonnement payant)<\/li>\n\n\n\n<li>\u2714\ufe0f Un <strong>GPU compatible<\/strong> (Intel, AMD ou Nvidia)<\/li>\n\n\n\n<li>\u2714\ufe0f Des <strong>pilotes correctement install\u00e9s<\/strong> sous Linux<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Dans ce guide, nous nous concentrons sur <strong>les GPU Intel int\u00e9gr\u00e9s<\/strong>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Mat\u00e9riel utilis\u00e9 dans ce guide<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Pour l\u2019exemple, le serveur est \u00e9quip\u00e9 de :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Intel Core i7-4770<\/strong> (4e g\u00e9n\u00e9ration)<\/li>\n\n\n\n<li>GPU int\u00e9gr\u00e9 : <strong>Intel HD Graphics 4600<\/strong><br><\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/chainesteve.be\/wp-content\/uploads\/2026\/01\/vlcsnap-2026-01-01-15h55m28s454-1024x576.png\" alt=\"\" class=\"wp-image-72\" srcset=\"https:\/\/chainesteve.be\/wp-content\/uploads\/2026\/01\/vlcsnap-2026-01-01-15h55m28s454-1024x576.png 1024w, https:\/\/chainesteve.be\/wp-content\/uploads\/2026\/01\/vlcsnap-2026-01-01-15h55m28s454-300x169.png 300w, https:\/\/chainesteve.be\/wp-content\/uploads\/2026\/01\/vlcsnap-2026-01-01-15h55m28s454-768x432.png 768w, https:\/\/chainesteve.be\/wp-content\/uploads\/2026\/01\/vlcsnap-2026-01-01-15h55m28s454-1536x864.png 1536w, https:\/\/chainesteve.be\/wp-content\/uploads\/2026\/01\/vlcsnap-2026-01-01-15h55m28s454.png 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u26a0\ufe0f Ce mat\u00e9riel est ancien :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Pas de 4K HEVC<\/li>\n\n\n\n<li>Pas de HDR<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Mais il reste <strong>tr\u00e8s efficace pour du 1080p<\/strong>, et c\u2019est largement suffisant pour comprendre la m\u00e9thode.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udca1 Avec un processeur Intel plus r\u00e9cent, vous aurez encore plus de compatibilit\u00e9 vid\u00e9o.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u00c9tape 1 \u2013 V\u00e9rifier que le GPU est d\u00e9tect\u00e9 par Linux<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Nous allons travailler <strong>en ligne de commande<\/strong>, via SSH (par exemple avec PuTTY).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udd0d V\u00e9rification de base<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>ls \/dev\/dri\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Si tout va bien, vous devriez voir :<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>card0\nrenderD128\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 Cela signifie que Linux <strong>voit bien le GPU<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u274c Si ce dossier n\u2019existe pas :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>le GPU n\u2019est pas reconnu<\/li>\n\n\n\n<li>ou le pilote n\u2019est pas charg\u00e9<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u00c9tape 2 \u2013 Comprendre VA-API (sans jargon)<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Qu\u2019est-ce que VA-API ?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>VA-API (Video Acceleration API)<\/strong> est une interface qui permet aux logiciels (comme Plex) de discuter avec le GPU pour lui confier le travail vid\u00e9o.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udca1 Analogie :<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">VA-API est l\u2019interpr\u00e8te entre Plex et la carte graphique.<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Sans VA-API fonctionnel, <strong>pas d\u2019acc\u00e9l\u00e9ration mat\u00e9rielle<\/strong>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u00c9tape 3 \u2013 Installer l\u2019outil de diagnostic <code>vainfo<\/code><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Pourquoi <code>vainfo<\/code> ?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><code>vainfo<\/code> permet de :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>v\u00e9rifier si VA-API fonctionne<\/li>\n\n\n\n<li>voir quels codecs sont support\u00e9s<\/li>\n\n\n\n<li>identifier les pilotes utilis\u00e9s<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Installation<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo apt update\nsudo apt install vainfo\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">Ex\u00e9cution<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>vainfo\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u00c9tape 4 \u2013 Comprendre les erreurs (sans paniquer)<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vous verrez probablement :<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>XDG_RUNTIME_DIR is invalid\ncan't connect to X server\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><br>Bonne nouvelle : ce n\u2019est pas grave<\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/chainesteve.be\/wp-content\/uploads\/2026\/01\/vlcsnap-2026-01-01-15h56m43s338-1024x576.png\" alt=\"\" class=\"wp-image-74\" srcset=\"https:\/\/chainesteve.be\/wp-content\/uploads\/2026\/01\/vlcsnap-2026-01-01-15h56m43s338-1024x576.png 1024w, https:\/\/chainesteve.be\/wp-content\/uploads\/2026\/01\/vlcsnap-2026-01-01-15h56m43s338-300x169.png 300w, https:\/\/chainesteve.be\/wp-content\/uploads\/2026\/01\/vlcsnap-2026-01-01-15h56m43s338-768x432.png 768w, https:\/\/chainesteve.be\/wp-content\/uploads\/2026\/01\/vlcsnap-2026-01-01-15h56m43s338-1536x864.png 1536w, https:\/\/chainesteve.be\/wp-content\/uploads\/2026\/01\/vlcsnap-2026-01-01-15h56m43s338.png 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Ces messages apparaissent car :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>OpenMediaVault n\u2019a <strong>pas d\u2019interface graphique<\/strong><\/li>\n\n\n\n<li><code>vainfo<\/code> est pr\u00e9vu \u00e0 l\u2019origine pour un environnement desktop<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 <strong>Aucun impact sur l\u2019acc\u00e9l\u00e9ration mat\u00e9rielle r\u00e9elle<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Le vrai probl\u00e8me<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Si vous voyez :<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>vaInitialize failed\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 Cela signifie que <strong>le pilote graphique n\u2019est pas correct ou absent<\/strong>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u00c9tape 5 \u2013 Installer les bons pilotes Intel<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Cas 1 : processeurs Intel 4e g\u00e9n\u00e9ration (comme l\u2019i7-4770)<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo apt install i965-va-driver libva-drm2 libva-x11-2\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">Cas 2 : processeurs Intel 5e g\u00e9n\u00e9ration et plus r\u00e9cents (recommand\u00e9)<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo apt install intel-media-va-driver-non-free libva-drm2 libva-x11-2\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u26a0\ufe0f Le bon pilote d\u00e9pend <strong>de votre g\u00e9n\u00e9ration de CPU<\/strong>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u00c9tape 6 \u2013 Red\u00e9marrer (obligatoire)<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo reboot\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 Le red\u00e9marrage permet au noyau Linux de charger correctement les nouveaux pilotes.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u00c9tape 7 \u2013 V\u00e9rifier que l\u2019acc\u00e9l\u00e9ration fonctionne<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Relancez :<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>vainfo\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><br>Vous devriez voir :<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/chainesteve.be\/wp-content\/uploads\/2026\/01\/vlcsnap-2026-01-01-15h57m39s182-1024x576.png\" alt=\"\" class=\"wp-image-75\" srcset=\"https:\/\/chainesteve.be\/wp-content\/uploads\/2026\/01\/vlcsnap-2026-01-01-15h57m39s182-1024x576.png 1024w, https:\/\/chainesteve.be\/wp-content\/uploads\/2026\/01\/vlcsnap-2026-01-01-15h57m39s182-300x169.png 300w, https:\/\/chainesteve.be\/wp-content\/uploads\/2026\/01\/vlcsnap-2026-01-01-15h57m39s182-768x432.png 768w, https:\/\/chainesteve.be\/wp-content\/uploads\/2026\/01\/vlcsnap-2026-01-01-15h57m39s182-1536x864.png 1536w, https:\/\/chainesteve.be\/wp-content\/uploads\/2026\/01\/vlcsnap-2026-01-01-15h57m39s182.png 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>H.264 : encodage et d\u00e9codage \u2705<\/li>\n\n\n\n<li>MPEG-2, VC1, JPEG<\/li>\n\n\n\n<li>VAEntrypointVideoProc<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83c\udf89 VA-API fonctionne !<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u00c9tape 8 \u2013 Donner les bons droits (tr\u00e8s important)<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Ajouter l\u2019utilisateur Plex au groupe vid\u00e9o<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo usermod -aG video steve\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 Le groupe <code>video<\/code> permet l\u2019acc\u00e8s au GPU.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u26a0\ufe0f Remplacez <code>steve<\/code> par votre utilisateur si besoin.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u00c9tape 9 \u2013 Donner acc\u00e8s au GPU dans Docker (Plex)<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><br>Dans votre fichier <code>docker-compose.yml<\/code>, ajoutez :<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/chainesteve.be\/wp-content\/uploads\/2026\/01\/vlcsnap-2026-01-01-15h58m19s792-1024x576.png\" alt=\"\" class=\"wp-image-76\" srcset=\"https:\/\/chainesteve.be\/wp-content\/uploads\/2026\/01\/vlcsnap-2026-01-01-15h58m19s792-1024x576.png 1024w, https:\/\/chainesteve.be\/wp-content\/uploads\/2026\/01\/vlcsnap-2026-01-01-15h58m19s792-300x169.png 300w, https:\/\/chainesteve.be\/wp-content\/uploads\/2026\/01\/vlcsnap-2026-01-01-15h58m19s792-768x432.png 768w, https:\/\/chainesteve.be\/wp-content\/uploads\/2026\/01\/vlcsnap-2026-01-01-15h58m19s792-1536x864.png 1536w, https:\/\/chainesteve.be\/wp-content\/uploads\/2026\/01\/vlcsnap-2026-01-01-15h58m19s792.png 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code>devices:\n  - \/dev\/dri:\/dev\/dri\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Puis red\u00e9marrez le conteneur Plex.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u00c9tape 10 \u2013 Activer l\u2019acc\u00e9l\u00e9ration dans Plex<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Dans l\u2019interface Plex :<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Param\u00e8tres<\/li>\n\n\n\n<li>Transcodage<\/li>\n\n\n\n<li>Cocher <strong>Acc\u00e9l\u00e9ration mat\u00e9rielle<\/strong><\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u00c9tape 11 \u2013 V\u00e9rifier que le GPU travaille vraiment<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Installer l\u2019outil de surveillance<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo apt install intel-gpu-tools\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">Lancer la surveillance<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>intel_gpu_top\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 Si la colonne <strong>Video<\/strong> bouge pendant un transcodage :<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83c\udf89 L\u2019acc\u00e9l\u00e9ration mat\u00e9rielle est bien active.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83e\udde0 Encadr\u00e9 \u201cPour les d\u00e9butants\u201d<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Linux n\u2019est pas fragile : les erreurs affich\u00e9es sont souvent informatives<\/li>\n\n\n\n<li>Copier une commande n\u2019est pas grave si vous comprenez <em>ce qu\u2019elle fait<\/em><\/li>\n\n\n\n<li>Le mat\u00e9riel ancien peut encore \u00eatre tr\u00e8s efficace sous Linux<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u274c Erreurs courantes \u00e0 \u00e9viter<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Oublier le red\u00e9marrage apr\u00e8s installation des pilotes<\/li>\n\n\n\n<li>Utiliser le mauvais pilote Intel<\/li>\n\n\n\n<li>Ne pas donner acc\u00e8s \u00e0 <code>\/dev\/dri<\/code> dans Docker<\/li>\n\n\n\n<li>Croire que tout le transcodage est mat\u00e9riel (il reste toujours une petite part CPU)<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Conclusion<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vous savez maintenant :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>ce qu\u2019est le transcodage<\/li>\n\n\n\n<li>pourquoi Plex peut ramer<\/li>\n\n\n\n<li>comment activer l\u2019acc\u00e9l\u00e9ration mat\u00e9rielle Intel<\/li>\n\n\n\n<li>comment v\u00e9rifier qu\u2019elle fonctionne r\u00e9ellement<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 R\u00e9sultat :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>moins de charge CPU<\/li>\n\n\n\n<li>plus de flux simultan\u00e9s<\/li>\n\n\n\n<li>un NAS DIY bien plus performant<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83c\udfac Pour voir la d\u00e9monstration compl\u00e8te en conditions r\u00e9elles, la vid\u00e9o est ici :<br><\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Acc\u00e9l\u00e9ration Mat\u00e9rielle Plex : Boostez les Performances de Votre NAS DIY !\" width=\"1200\" height=\"675\" src=\"https:\/\/www.youtube.com\/embed\/_b3-vr3GZOg?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u27a1\ufe0f D\u2019autres guides Linux et NAS DIY sont disponibles sur le site pour continuer sereinement votre d\u00e9couverte.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Introduction Si vous utilisez Plex sur un NAS DIY (fait maison) et que votre serveur commence \u00e0 tousser d\u00e8s que plusieurs personnes regardent des vid\u00e9os en m\u00eame temps, cet article est fait pour vous. Nous allons voir comment activer l\u2019acc\u00e9l\u00e9ration mat\u00e9rielle dans Plex, \u00e9tape par \u00e9tape, sous Linux, avec un langage clair et accessible, m\u00eame &#8230; <a title=\"Acc\u00e9l\u00e9ration mat\u00e9rielle Plex : boostez vraiment les performances de votre NAS DIY\" class=\"read-more\" href=\"https:\/\/chainesteve.be\/index.php\/2026\/01\/01\/acceleration-materielle-plex-boostez-vraiment-les-performances-de-votre-nas-diy\/\" aria-label=\"Read more about Acc\u00e9l\u00e9ration mat\u00e9rielle Plex : boostez vraiment les performances de votre NAS DIY\">Lire la suite<\/a><\/p>\n","protected":false},"author":1,"featured_media":70,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_crdt_document":"","footnotes":""},"categories":[14],"tags":[],"class_list":["post-69","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-medias-streaming"],"_links":{"self":[{"href":"https:\/\/chainesteve.be\/index.php\/wp-json\/wp\/v2\/posts\/69","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/chainesteve.be\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/chainesteve.be\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/chainesteve.be\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/chainesteve.be\/index.php\/wp-json\/wp\/v2\/comments?post=69"}],"version-history":[{"count":1,"href":"https:\/\/chainesteve.be\/index.php\/wp-json\/wp\/v2\/posts\/69\/revisions"}],"predecessor-version":[{"id":77,"href":"https:\/\/chainesteve.be\/index.php\/wp-json\/wp\/v2\/posts\/69\/revisions\/77"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/chainesteve.be\/index.php\/wp-json\/wp\/v2\/media\/70"}],"wp:attachment":[{"href":"https:\/\/chainesteve.be\/index.php\/wp-json\/wp\/v2\/media?parent=69"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/chainesteve.be\/index.php\/wp-json\/wp\/v2\/categories?post=69"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/chainesteve.be\/index.php\/wp-json\/wp\/v2\/tags?post=69"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}