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l'erreur « Signature extraction failed » de yt-dlp","yt-dlp affiche « Signature extraction failed » ? YouTube a renouvelé son player JS. Mettez yt-dlp à jour ou utilisez le téléchargeur web Any4K, qui suit les changements de signature pour vous.","/seo/how-to/yt-dlp-403-forbidden.webp",[354,356,358],{"title":355,"path":139},"Résolution de l'erreur HTTP 403 Interdit de yt-dlp",{"title":357,"path":140},"Résoudre l'erreur HTTP 429 Too Many Requests de yt-dlp",{"title":359,"path":138},"Télécharger des vidéos YouTube soumises à une limite d'âge avec yt-dlp",{"type":361,"children":362,"toc":588},"root",[363,372,395,408,414,419,431,436,470,476,481,487,501,507,551,557,570,576],{"type":364,"tag":365,"props":366,"children":368},"element","h2",{"id":367},"ce-que-veut-dire-signature-extraction-failed",[369],{"type":370,"value":371},"text","Ce que veut dire « Signature extraction failed »",{"type":364,"tag":373,"props":374,"children":375},"p",{},[376,378,385,387,393],{"type":370,"value":377},"Quand yt-dlp affiche ",{"type":364,"tag":379,"props":380,"children":382},"code",{"className":381},[],[383],{"type":370,"value":384},"Signature extraction failed: Some formats may be missing",{"type":370,"value":386}," ou ",{"type":364,"tag":379,"props":388,"children":390},{"className":389},[],[391],{"type":370,"value":392},"Could not find JS function",{"type":370,"value":394},", YouTube a fait tourner le fichier JavaScript du player qui signe chaque URL de flux. Chaque URL de flux YouTube contient un jeton de signature à déchiffrer à l'aide d'une fonction JS contenue dans ce player JS. Quand YouTube change cette fonction (ce qui arrive toutes les quelques semaines), les anciennes versions de yt-dlp ne retrouvent plus son nouveau nom et l'extraction échoue.",{"type":364,"tag":373,"props":396,"children":397},{},[398,400,406],{"type":370,"value":399},"La page de la vidéo continue de se charger dans votre navigateur — c'est pour cela que l'erreur surprend. Mais le ",{"type":364,"tag":401,"props":402,"children":403},"em",{},[404],{"type":370,"value":405},"téléchargement",{"type":370,"value":407}," a besoin du jeton déchiffré, et yt-dlp n'a pas encore appris le nouveau motif.",{"type":364,"tag":365,"props":409,"children":411},{"id":410},"comment-le-corriger-côté-yt-dlp",[412],{"type":370,"value":413},"Comment le corriger côté yt-dlp",{"type":364,"tag":373,"props":415,"children":416},{},[417],{"type":370,"value":418},"La solution fiable, c'est de mettre yt-dlp à jour :",{"type":364,"tag":420,"props":421,"children":426},"pre",{"className":422,"code":424,"language":425,"meta":349},[423],"language-sh","# installation pip\npip install -U yt-dlp\n\n# brew\nbrew upgrade yt-dlp\n\n# pipx\npipx upgrade yt-dlp\n\n# binaire autonome\nyt-dlp -U\n","sh",[427],{"type":364,"tag":379,"props":428,"children":429},{"__ignoreMap":349},[430],{"type":370,"value":424},{"type":364,"tag":373,"props":432,"children":433},{},[434],{"type":370,"value":435},"Si vous êtes déjà sur la toute dernière version et que l'erreur persiste :",{"type":364,"tag":437,"props":438,"children":439},"ul",{},[440,454,465],{"type":364,"tag":441,"props":442,"children":443},"li",{},[444,446,452],{"type":370,"value":445},"Allez voir les issues yt-dlp sur GitHub : il y a généralement un thread qui suit le changement de signature en cours, avec un patch déjà mergé sur ",{"type":364,"tag":379,"props":447,"children":449},{"className":448},[],[450],{"type":370,"value":451},"master",{"type":370,"value":453},".",{"type":364,"tag":441,"props":455,"children":456},{},[457,459],{"type":370,"value":458},"Installez depuis master : ",{"type":364,"tag":379,"props":460,"children":462},{"className":461},[],[463],{"type":370,"value":464},"pip install -U \"yt-dlp[default] @ git+https://github.com/yt-dlp/yt-dlp@master\"",{"type":364,"tag":441,"props":466,"children":467},{},[468],{"type":370,"value":469},"Attendez 12 à 48 heures qu'une release taguée inclue le correctif.",{"type":364,"tag":365,"props":471,"children":473},{"id":472},"pourquoi-ça-revient-sans-cesse",[474],{"type":370,"value":475},"Pourquoi ça revient sans cesse",{"type":364,"tag":373,"props":477,"children":478},{},[479],{"type":370,"value":480},"YouTube fait tourner volontairement son schéma de signatures pour décourager le scraping. Le scénario est toujours le même : un nouveau player JS est mis en production, la fonction de déchiffrage est renommée et minifiée différemment, et chaque téléchargeur doit redétecter la fonction et réécrire son extracteur. Les mainteneurs de yt-dlp suivent ces changements et publient des mises à jour, mais il existe toujours une fenêtre où le dernier changement YouTube va plus vite que la dernière release de yt-dlp.",{"type":364,"tag":365,"props":482,"children":484},{"id":483},"utiliser-any4k-à-la-place",[485],{"type":370,"value":486},"Utiliser Any4K à la place",{"type":364,"tag":373,"props":488,"children":489},{},[490,492,499],{"type":370,"value":491},"Any4K maintient l'extraction de signature côté serveur dans le cadre du fonctionnement normal. Quand YouTube fait tourner le player JS, notre infrastructure se met à jour et les téléchargements continuent de marcher — généralement en moins d'une heure, pas en 48. De votre côté, il n'y a rien à mettre à jour : collez l'URL sur ",{"type":364,"tag":493,"props":494,"children":496},"a",{"href":495},"https://any4k.com",[497],{"type":370,"value":498},"any4k.com",{"type":370,"value":500}," et téléchargez.",{"type":364,"tag":365,"props":502,"children":504},{"id":503},"avantages-dany4k-pendant-les-rotations-de-signature",[505],{"type":370,"value":506},"Avantages d'Any4K pendant les rotations de signature",{"type":364,"tag":437,"props":508,"children":509},{},[510,521,531,541],{"type":364,"tag":441,"props":511,"children":512},{},[513,519],{"type":364,"tag":514,"props":515,"children":516},"strong",{},[517],{"type":370,"value":518},"Pas de mise à jour de yt-dlp",{"type":370,"value":520}," : on déploie le correctif de notre côté.",{"type":364,"tag":441,"props":522,"children":523},{},[524,529],{"type":364,"tag":514,"props":525,"children":526},{},[527],{"type":370,"value":528},"Pas d'installation nightly",{"type":370,"value":530}," : l'outil web est toujours à jour.",{"type":364,"tag":441,"props":532,"children":533},{},[534,539],{"type":364,"tag":514,"props":535,"children":536},{},[537],{"type":370,"value":538},"Même parcours quels que soient les changements YouTube",{"type":370,"value":540}," : coller, choisir, enregistrer.",{"type":364,"tag":441,"props":542,"children":543},{},[544,549],{"type":364,"tag":514,"props":545,"children":546},{},[547],{"type":370,"value":548},"Multiplateforme",{"type":370,"value":550}," : YouTube, TikTok, Twitter, Instagram, Facebook, Reddit, Shorts.",{"type":364,"tag":365,"props":552,"children":554},{"id":553},"quand-yt-dlp-reste-le-bon-choix",[555],{"type":370,"value":556},"Quand yt-dlp reste le bon choix",{"type":364,"tag":373,"props":558,"children":559},{},[560,562,568],{"type":370,"value":561},"Pour les gros travaux d'archivage, l'extraction de sous-titres intégrés, les abonnements à des chaînes et l'automatisation par script, yt-dlp reste l'outil le plus profond. Acceptez simplement que les erreurs de signature font partie de la maintenance — gardez ",{"type":364,"tag":379,"props":563,"children":565},{"className":564},[],[566],{"type":370,"value":567},"yt-dlp -U",{"type":370,"value":569}," dans votre cron.",{"type":364,"tag":365,"props":571,"children":573},{"id":572},"conclusion",[574],{"type":370,"value":575},"Conclusion",{"type":364,"tag":373,"props":577,"children":578},{},[579,581,586],{"type":370,"value":580},"« Signature extraction failed », c'est YouTube qui change ses serrures. yt-dlp publie régulièrement de nouvelles clés ; en attendant, ",{"type":364,"tag":493,"props":582,"children":583},{"href":495},[584],{"type":370,"value":585},"Any4K Video Downloader",{"type":370,"value":587}," prend en charge les rotations de signature côté serveur pour que vos téléchargements continuent.",{"title":349,"searchDepth":589,"depth":589,"links":590},2,[591,592,593,594,595,596,597],{"id":367,"depth":589,"text":371},{"id":410,"depth":589,"text":413},{"id":472,"depth":589,"text":475},{"id":483,"depth":589,"text":486},{"id":503,"depth":589,"text":506},{"id":553,"depth":589,"text":556},{"id":572,"depth":589,"text":575},"markdown","content:fr:how-to-download-video:yt-dlp-signature-extraction-failed.md","content","fr/how-to-download-video/yt-dlp-signature-extraction-failed.md","fr/how-to-download-video/yt-dlp-signature-extraction-failed","md",[21,52,85,116,141,155,188,221,253,289,327],"Comment télécharger des vidéos — guides et dépannage",1793415031977]