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YouTube 4K","Téléchargeur YouTube 4K gratuit en ligne. Enregistrez des vidéos YouTube en 2160p Ultra HD, 1440p, 1080p et 8K si disponibles — directement depuis votre navigateur, sans installation.","Téléchargeur YouTube 4K - Télécharger des vidéos YouTube en 4K en ligne","téléchargeur youtube 4k",[355,356,357,358,359],"téléchargeur 4k youtube","télécharger youtube 4k","téléchargement youtube 2160p","téléchargeur ultra hd youtube","téléchargeur 8k youtube","tool","youtube","/seo/images/video-download-flow-illustration.webp","Un parcours dans le navigateur qui transforme un lien YouTube en une option de téléchargement 4K Ultra HD.","Collez un lien YouTube compatible 4K, puis choisissez 2160p, 1440p ou 1080p selon votre appareil.","/seo/screenshots/any4k-youtube-video-downloader.webp",[367,370,373,376],{"name":368,"text":369},"Copiez l’URL YouTube","Ouvrez la vidéo YouTube dans votre navigateur ou votre application, puis copiez le lien de partage ou l’URL de la barre d’adresse.",{"name":371,"text":372},"Collez le lien dans Any4K","Sur any4k.com, collez l’URL YouTube dans le champ de saisie et lancez l’analyse.",{"name":374,"text":375},"Choisissez le format 4K","Lorsque la vidéo source propose la 4K, sélectionnez le 2160p (ou 1440p / 1080p) et le conteneur adapté à votre lecteur.",{"name":377,"text":378},"Enregistrez le fichier","Confirmez le téléchargement pour enregistrer la vidéo haute résolution dans le stockage de votre appareil.",[380,382,384,386],{"title":381,"path":313},"Téléchargeur de vidéos YouTube",{"title":383,"path":312},"YouTube en MP4",{"title":385,"path":309},"Téléchargeur de YouTube Shorts",{"title":387,"path":4},"Téléchargeur 4K : en ligne ou logiciel",[389,392,395,398,401],{"question":390,"answer":391},"Qu’est-ce qu’un téléchargeur YouTube 4K ?","Un téléchargeur YouTube 4K est un outil qui peut enregistrer une vidéo YouTube en 2160p (Ultra HD) lorsque la source a été mise en ligne dans cette qualité ou supérieure. Any4K fonctionne dans le navigateur et liste la résolution la plus élevée que YouTube expose pour la vidéo que vous soumettez.",{"question":393,"answer":394},"Pourquoi l’option 4K manque-t-elle sur certaines vidéos ?","YouTube ne diffuse la 4K que lorsque le créateur a téléversé l’original en 2160p ou plus. De nombreuses vidéos anciennes, des directs ou des téléversements mobiles plafonnent à 1080p. Si la 4K n’apparaît pas, c’est que la source ne contient pas de flux 4K.",{"question":396,"answer":397},"Le téléchargement 4K prend-il plus de temps et d’espace ?","Oui. Un fichier vidéo 4K est généralement 3 à 5 fois plus volumineux que la même vidéo en 1080p ; les téléchargements sont donc plus longs et occupent plus d’espace disque. Prévoyez plusieurs centaines de mégaoctets pour des clips courts et plusieurs gigaoctets pour des vidéos longues.",{"question":399,"answer":400},"Puis-je télécharger en 8K ?","Quand la mise en ligne YouTube d’origine inclut un flux 8K (4320p), Any4K peut le proposer comme option de téléchargement. La disponibilité du 8K est rare ; la plupart des créateurs s’arrêtent à 1080p ou 4K.",{"question":402,"answer":403},"Mon téléphone va-t-il lire un fichier 4K ?","Les smartphones haut de gamme récents (iPhone 12 et plus, flagships Android récents) lisent la 4K sans problème. Les appareils plus anciens peuvent peiner. Si votre appareil date un peu, préférez le 1440p ou le 1080p — le fichier restera net sur un petit écran.",{"type":405,"children":406,"toc":563},"root",[407,415,422,435,440,446,451,456,462,498,503,509,514,547,552,558],{"type":408,"tag":409,"props":410,"children":411},"element","p",{},[412],{"type":413,"value":414},"text","Le téléchargeur YouTube 4K d’Any4K enregistre les vidéos YouTube publiques dans la résolution la plus haute disponible. Lorsqu’un créateur a téléversé une vidéo en 2160p ou 4320p, vous pouvez choisir exactement cette qualité et télécharger le fichier directement depuis votre navigateur — sans installation, sans inscription, et sans filigrane ajouté de notre part.",{"type":408,"tag":416,"props":417,"children":419},"h2",{"id":418},"quand-la-4k-vaut-vraiment-le-téléchargement",[420],{"type":413,"value":421},"Quand la 4K vaut vraiment le téléchargement",{"type":408,"tag":409,"props":423,"children":424},{},[425,427,433],{"type":413,"value":426},"La 4K s’impose quand l’original est net, que l’appareil de lecture est grand et que vous disposez d’espace de stockage. Un téléchargement 4K d’un vlog tourné au smartphone ne sera pas sensiblement meilleur que le 1080p parce que la source elle-même est limitée. En revanche, un téléchargement 4K d’un court métrage cinématographique, d’un clip musical ou d’un test produit filmé avec une vraie caméra ",{"type":408,"tag":428,"props":429,"children":430},"em",{},[431],{"type":413,"value":432},"montrera",{"type":413,"value":434}," la différence sur un téléviseur ou un écran 4K.",{"type":408,"tag":409,"props":436,"children":437},{},[438],{"type":413,"value":439},"Test rapide : ouvrez la vidéo YouTube, cliquez sur l’icône d’engrenage et consultez le menu de qualité. Si 2160p est listé, la source prend en charge la 4K et Any4K peut l’enregistrer. Si le maximum est 1080p HD, télécharger en « 4K » ne vous apporte rien — les pixels sous-jacents n’existent pas.",{"type":408,"tag":416,"props":441,"children":443},{"id":442},"comment-fonctionne-la-chaîne-4k",[444],{"type":413,"value":445},"Comment fonctionne la chaîne 4K",{"type":408,"tag":409,"props":447,"children":448},{},[449],{"type":413,"value":450},"YouTube diffuse la 4K via des flux audio et vidéo séparés, dans des formats comme VP9 ou AV1 (vidéo) et Opus ou AAC (audio). Un téléchargeur basé sur le navigateur doit récupérer les deux, puis les fusionner en un MP4 ou MKV lisible. Any4K gère le muxage, vous obtenez donc un seul fichier prêt à lire dans n’importe quel lecteur.",{"type":408,"tag":409,"props":452,"children":453},{},[454],{"type":413,"value":455},"Si vous voyez ailleurs un 2160p « vidéo uniquement », il s’agit du flux non fusionné. Any4K propose par défaut le résultat muxé.",{"type":408,"tag":416,"props":457,"children":459},{"id":458},"_4k-1440p-ou-1080p-choisir-la-bonne-option",[460],{"type":413,"value":461},"4K, 1440p ou 1080p — choisir la bonne option",{"type":408,"tag":463,"props":464,"children":465},"ul",{},[466,478,488],{"type":408,"tag":467,"props":468,"children":469},"li",{},[470,476],{"type":408,"tag":471,"props":472,"children":473},"strong",{},[474],{"type":413,"value":475},"2160p (4K UHD)",{"type":413,"value":477}," — idéal pour les téléviseurs 4K et les moniteurs externes. La taille peut atteindre 1 à 5 Go pour 10 minutes de vidéo. À choisir lorsque la qualité d’archivage compte.",{"type":408,"tag":467,"props":479,"children":480},{},[481,486],{"type":408,"tag":471,"props":482,"children":483},{},[484],{"type":413,"value":485},"1440p (2K QHD)",{"type":413,"value":487}," — le bon compromis pour les écrans de portables et les smartphones haute densité. À peu près la moitié de la taille du 4K, avec une perte de qualité quasi imperceptible à distance de visionnage.",{"type":408,"tag":467,"props":489,"children":490},{},[491,496],{"type":408,"tag":471,"props":492,"children":493},{},[494],{"type":413,"value":495},"1080p (Full HD)",{"type":413,"value":497}," — universel, lu partout, suffisamment léger pour être partagé via AirDrop ou téléversé dans le cloud.",{"type":408,"tag":409,"props":499,"children":500},{},[501],{"type":413,"value":502},"Vous pouvez toujours descendre en résolution ; vous ne pouvez pas remonter en 4K une fois que vous n’avez qu’une copie 1080p.",{"type":408,"tag":416,"props":504,"children":506},{"id":505},"choix-du-codec-mp4-webm-mkv",[507],{"type":413,"value":508},"Choix du codec : MP4, WebM, MKV",{"type":408,"tag":409,"props":510,"children":511},{},[512],{"type":413,"value":513},"Pour les téléchargements 4K, le conteneur compte parce que le codec conditionne la compatibilité :",{"type":408,"tag":463,"props":515,"children":516},{},[517,527,537],{"type":408,"tag":467,"props":518,"children":519},{},[520,525],{"type":408,"tag":471,"props":521,"children":522},{},[523],{"type":413,"value":524},"MP4 (H.264 / AVC)",{"type":413,"value":526}," — le plus compatible. Pas forcément le plus efficace en 4K, mais lu sur tous les appareils et toutes les suites de montage.",{"type":408,"tag":467,"props":528,"children":529},{},[530,535],{"type":408,"tag":471,"props":531,"children":532},{},[533],{"type":413,"value":534},"WebM (VP9)",{"type":413,"value":536}," — le format haute efficacité par défaut de Google. Fichier plus petit à qualité égale. Lu dans Chrome, Firefox et les Android récents. Non pris en charge nativement par les anciens iOS ou par beaucoup d’éditeurs.",{"type":408,"tag":467,"props":538,"children":539},{},[540,545],{"type":408,"tag":471,"props":541,"children":542},{},[543],{"type":413,"value":544},"MKV (AV1)",{"type":413,"value":546}," — le codec le plus récent et le plus efficace. Environ 30 % plus léger que VP9 à qualité équivalente. Support limité hors de VLC et des systèmes d’exploitation récents.",{"type":408,"tag":409,"props":548,"children":549},{},[550],{"type":413,"value":551},"Si vous prévoyez de monter la vidéo, choisissez le MP4 H.264 par sécurité. Si vous voulez seulement la regarder et économiser de l’espace, WebM ou AV1 conviennent.",{"type":408,"tag":416,"props":553,"children":555},{"id":554},"usage-responsable",[556],{"type":413,"value":557},"Usage responsable",{"type":408,"tag":409,"props":559,"children":560},{},[561],{"type":413,"value":562},"Réservez les téléchargements 4K aux contenus que vous avez le droit de conserver — vos propres mises en ligne, des œuvres du domaine public, des contenus sous licence Creative Commons, ou des vidéos pour lesquelles le créateur autorise explicitement le téléchargement. Respectez les conditions de YouTube, le droit d’auteur et les droits des créateurs.",{"title":349,"searchDepth":564,"depth":564,"links":565},2,[566,567,568,569,570],{"id":418,"depth":564,"text":421},{"id":442,"depth":564,"text":445},{"id":458,"depth":564,"text":461},{"id":505,"depth":564,"text":508},{"id":554,"depth":564,"text":557},"markdown","content:fr:4k-youtube-downloader.md","content","fr/4k-youtube-downloader.md","fr/4k-youtube-downloader","md",[5,9,40,73,104,143,176,209,241,277,315],null,1793415031779]