{"id":1628,"date":"2026-11-06T10:00:00","date_gmt":"2026-11-06T10:00:00","guid":{"rendered":"https:\/\/chatx.ai\/blog\/gemini-omni-1-2-flash-2\/"},"modified":"2026-11-10T18:00:46","modified_gmt":"2026-11-10T18:00:46","slug":"gemini-omni-1-2-flash","status":"publish","type":"post","link":"https:\/\/chatx.ai\/blog\/fr\/gemini-omni-1-2-flash\/","title":{"rendered":"Gemini Omni 1.2 Flash cr\u00e9e des vid\u00e9os jusqu\u2019\u00e0 15 secondes"},"content":{"rendered":"<p class=\"intro\">Un nouveau mod\u00e8le est propos\u00e9 dans le g\u00e9n\u00e9rateur de vid\u00e9os de ChatX&nbsp;: Gemini Omni 1.2 Flash de Google. Il produit des clips allant jusqu\u2019\u00e0 15 secondes d\u2019un seul tenant, toujours avec le son. Google a ouvert le mod\u00e8le \u00e0 tous le 5 novembre 2026. Voici ce qu\u2019il sait faire, ce qu\u2019un clip co\u00fbte en tokens et comment r\u00e9diger vos prompts pour obtenir le r\u00e9sultat voulu.<\/p>\n<nav class=\"toc\">\n<ul>\n<li><a href=\"#ueberblick\">L\u2019essentiel en bref<\/a><\/li>\n<li><a href=\"#veo\">De Veo \u00e0 Omni<\/a><\/li>\n<li><a href=\"#kosten\">Ce que co\u00fbte un clip sur ChatX<\/a><\/li>\n<li><a href=\"#test\">Notre test avec trois clips courts<\/a><\/li>\n<li><a href=\"#prompts\">Comment r\u00e9diger de bons prompts<\/a><\/li>\n<li><a href=\"#grenzen\">Les limites du mod\u00e8le<\/a><\/li>\n<\/ul>\n<\/nav>\n<h2 id=\"ueberblick\">L\u2019essentiel en bref<\/h2>\n<ul>\n<li><strong>Dur\u00e9e&nbsp;:<\/strong> de 3 \u00e0 15 secondes par clip, par paliers d\u2019une seconde. Son pr\u00e9d\u00e9cesseur Omni 1.1 plafonnait \u00e0 10 secondes.<\/li>\n<li><strong>Son&nbsp;:<\/strong> la parole, les bruitages et la musique sont g\u00e9n\u00e9r\u00e9s en m\u00eame temps que l\u2019image. Il n\u2019existe pas de vid\u00e9o sans piste audio.<\/li>\n<li><strong>R\u00e9solution&nbsp;:<\/strong> 360p, 720p, 1080p et 4K. Les deux niveaux les plus \u00e9lev\u00e9s sont obtenus par mise \u00e0 l\u2019\u00e9chelle.<\/li>\n<li><strong>Format&nbsp;:<\/strong> paysage 16:9 ou portrait 9:16, 24 images par seconde, en MP4.<\/li>\n<li><strong>Entr\u00e9e&nbsp;:<\/strong> un texte, une image de d\u00e9part, ou une image de d\u00e9part et une image de fin. Avec deux images, la dur\u00e9e est limit\u00e9e \u00e0 10 secondes.<\/li>\n<li><strong>Images de r\u00e9f\u00e9rence&nbsp;:<\/strong> jusqu\u2019\u00e0 six images permettent de garder un personnage ou un produit identique sur tout le clip.<\/li>\n<li><strong>Marquage&nbsp;:<\/strong> chaque vid\u00e9o porte le filigrane invisible SynthID, qui permet de reconna\u00eetre les vid\u00e9os g\u00e9n\u00e9r\u00e9es par IA.<\/li>\n<\/ul>\n<p>D\u2019apr\u00e8s <a href=\"https:\/\/blog.google\/innovation-and-ai\/technology\/developers-tools\/introducing-gemini-omni-1-2-flash\/\" target=\"_blank\" rel=\"noopener\">l\u2019annonce de Google<\/a>, les dialogues sonnent plus naturels et le mouvement des l\u00e8vres suit mieux la parole qu\u2019auparavant. Le mod\u00e8le est en outre 30&nbsp;% moins cher qu\u2019Omni 1.1.<\/p>\n<h2 id=\"veo\">De Veo \u00e0 Omni<\/h2>\n<p>Si vous avez d\u00e9j\u00e0 travaill\u00e9 avec les mod\u00e8les vid\u00e9o de Google, vous connaissez le nom Veo. Dans l\u2019API Gemini, c\u2019est Omni qui a repris ce r\u00f4le&nbsp;:<\/p>\n<ul>\n<li><strong>30 juin 2026&nbsp;:<\/strong> Omni Flash sort en pr\u00e9version, avec des clips jusqu\u2019\u00e0 10 secondes en 720p.<\/li>\n<li><strong>27 ao\u00fbt 2026&nbsp;:<\/strong> Omni 1.1 Flash devient disponible pour tous et apporte l\u2019image de d\u00e9part et l\u2019image de fin, ainsi que des r\u00e9solutions jusqu\u2019\u00e0 la 4K.<\/li>\n<li><strong>22 octobre 2026&nbsp;:<\/strong> Google d\u00e9sactive Veo 3.1 dans l\u2019API Gemini et d\u00e9signe Omni comme son successeur.<\/li>\n<li><strong>5 novembre 2026&nbsp;:<\/strong> Omni 1.2 Flash suit, avec 15 secondes, jusqu\u2019\u00e0 six images de r\u00e9f\u00e9rence et un prix plus bas.<\/li>\n<\/ul>\n<h2 id=\"kosten\">Ce que co\u00fbte un clip sur ChatX<\/h2>\n<p>Vous trouverez Gemini Omni 1.2 Flash dans le g\u00e9n\u00e9rateur de vid\u00e9os, aux c\u00f4t\u00e9s de Seedance 2.5, Kling 4.0, Wan 3.0, MiniMax H3 Max et HeyGen Video 1. Il vous faut pour cela un compte gratuit. La facturation se fait \u00e0 la seconde de vid\u00e9o et le prix d\u00e9pend de la r\u00e9solution.<\/p>\n<table style=\"width: 100%;border-collapse: collapse;text-align: left\" border=\"1\" cellpadding=\"10\">\n<thead style=\"background-color: #f0f0f0\">\n<tr>\n<th scope=\"col\" style=\"text-align: left\">R\u00e9solution<\/th>\n<th scope=\"col\" style=\"text-align: left\">Tokens par seconde<\/th>\n<th scope=\"col\" style=\"text-align: left\">Clip de 10 secondes<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"text-align: left\">360p<\/td>\n<td style=\"text-align: left\">environ 5&nbsp;700<\/td>\n<td style=\"text-align: left\">environ 57&nbsp;000<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\">720p<\/td>\n<td style=\"text-align: left\">17&nbsp;000<\/td>\n<td style=\"text-align: left\">170&nbsp;000<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\">1080p<\/td>\n<td style=\"text-align: left\">25&nbsp;500<\/td>\n<td style=\"text-align: left\">255&nbsp;000<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\">4K<\/td>\n<td style=\"text-align: left\">51&nbsp;000<\/td>\n<td style=\"text-align: left\">510&nbsp;000<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Un clip de 15 secondes compl\u00e8tes en 720p co\u00fbte donc 255&nbsp;000 tokens. Notre conseil&nbsp;: testez d\u2019abord une id\u00e9e en 360p. Cela co\u00fbte trois fois moins et vous montre si la composition, le mouvement et le son conviennent. La r\u00e9solution sup\u00e9rieure ne vaut le coup qu\u2019une fois le prompt au point.<\/p>\n<h2 id=\"test\">Notre test avec trois clips courts<\/h2>\n<p>Nous avons essay\u00e9 trois types d\u2019entr\u00e9e&nbsp;: texte, image de d\u00e9part et image de r\u00e9f\u00e9rence, \u00e0 chaque fois sur 3 secondes en 360p. C\u2019est le r\u00e9glage le moins cher, \u00e0 environ 17&nbsp;000 tokens par clip.<\/p>\n<table style=\"width: 100%;border-collapse: collapse;text-align: left\" border=\"1\" cellpadding=\"10\">\n<thead style=\"background-color: #f0f0f0\">\n<tr>\n<th scope=\"col\" style=\"text-align: left\">Entr\u00e9e<\/th>\n<th scope=\"col\" style=\"text-align: left\">Demande<\/th>\n<th scope=\"col\" style=\"text-align: left\">Temps d\u2019attente<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"text-align: left\">texte seul<\/td>\n<td style=\"text-align: left\">un cerf-volant rouge en papier au-dessus d\u2019une prairie<\/td>\n<td style=\"text-align: left\">24 secondes<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\">image de d\u00e9part<\/td>\n<td style=\"text-align: left\">la cam\u00e9ra avance vers la vitrine d\u2019une librairie, la porte de la boutique s\u2019ouvre<\/td>\n<td style=\"text-align: left\">28 secondes<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\">image de r\u00e9f\u00e9rence<\/td>\n<td style=\"text-align: left\">la m\u00eame librairie par un soir de pluie, des passants avec des parapluies d\u00e9filent<\/td>\n<td style=\"text-align: left\">27 secondes<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Les trois clips sont arriv\u00e9s avec une piste audio. Avec l\u2019image de d\u00e9part, la vid\u00e9o commence exactement sur la photo import\u00e9e&nbsp;: la cam\u00e9ra s\u2019approche, la porte de la boutique s\u2019ouvre et l\u2019ardoise portant l\u2019inscription allemande \u00ab&nbsp;Lesung heute um 19 Uhr, Eintritt frei&nbsp;\u00bb (lecture ce soir \u00e0 19 h, entr\u00e9e libre) reste lisible lettre par lettre.<\/p>\n<p style=\"margin-bottom:4px\"><video controls preload=\"none\" width=\"500\" poster=\"https:\/\/chatx.ai\/blog\/wp-content\/uploads\/2026\/11\/gemini-omni-1-2-flash-buchhandlung-startbild.jpg\" src=\"https:\/\/chatx.ai\/blog\/wp-content\/uploads\/2026\/11\/gemini-omni-1-2-flash-buchhandlung-startbild.mp4\" style=\"border-radius:12px;max-width:100%;height:auto\"><\/video><\/p>\n<p style=\"font-size:13px;color:#777;margin-top:0\">Clip avec image de d\u00e9part&nbsp;: 3 secondes, 360p, avec le son. L\u2019image de la librairie provient de notre <a href=\"https:\/\/chatx.ai\/blog\/fr\/nano-banana-2-1\/\">test de Nano Banana 2.1<\/a>.<\/p>\n<p>Avec l\u2019image de r\u00e9f\u00e9rence, le mod\u00e8le reconstruit la sc\u00e8ne. La boutique, l\u2019enseigne et l\u2019ardoise ont \u00e9t\u00e9 conserv\u00e9es, auxquelles se sont ajout\u00e9s la pluie, les pav\u00e9s mouill\u00e9s et des passants avec des parapluies. Quelques d\u00e9tails se sont perdus, comme le banc devant la porte. L\u2019important est de d\u00e9crire clairement la sc\u00e8ne&nbsp;: \u00ab&nbsp;il pleut \u00e0 verse, pav\u00e9s mouill\u00e9s&nbsp;\u00bb fonctionne mieux qu\u2019un simple \u00ab&nbsp;sous la pluie&nbsp;\u00bb.<\/p>\n<p style=\"margin-bottom:4px\"><video controls preload=\"none\" width=\"500\" poster=\"https:\/\/chatx.ai\/blog\/wp-content\/uploads\/2026\/11\/gemini-omni-1-2-flash-buchhandlung-vorlage.jpg\" src=\"https:\/\/chatx.ai\/blog\/wp-content\/uploads\/2026\/11\/gemini-omni-1-2-flash-buchhandlung-vorlage.mp4\" style=\"border-radius:12px;max-width:100%;height:auto\"><\/video><\/p>\n<p style=\"font-size:13px;color:#777;margin-top:0\">Clip avec image de r\u00e9f\u00e9rence&nbsp;: la m\u00eame boutique, cette fois sous la pluie.<\/p>\n<h2 id=\"prompts\">Comment r\u00e9diger de bons prompts<\/h2>\n<p>Les conseils qui suivent sont tir\u00e9s du guide de prompts de Google pour Omni Flash. Le mieux est de r\u00e9diger vos prompts en anglais (nous y revenons dans la derni\u00e8re section).<\/p>\n<ul>\n<li><strong>Demander un plan unique&nbsp;:<\/strong> sans consigne, le mod\u00e8le a tendance \u00e0 monter plusieurs plans \u00e0 la suite. Si vous voulez une sc\u00e8ne continue, ajoutez \u00ab&nbsp;In a single continuous shot&nbsp;\u00bb ou \u00ab&nbsp;No scene cuts&nbsp;\u00bb.<\/li>\n<li><strong>D\u00e9crire le son&nbsp;:<\/strong> sinon, Omni choisit lui-m\u00eame une piste audio adapt\u00e9e. La musique doit \u00eatre demand\u00e9e explicitement, par exemple avec \u00ab&nbsp;Include calm background music&nbsp;\u00bb. Si personne ne doit parler, \u00ab&nbsp;No dialogue&nbsp;\u00bb fait l\u2019affaire.<\/li>\n<li><strong>Indiquer les moments&nbsp;:<\/strong> vous pouvez pr\u00e9ciser quand quelque chose se produit. Cela fonctionne en langage courant (\u00ab&nbsp;After 3 seconds \u2026&nbsp;\u00bb) ou avec des rep\u00e8res temporels comme [0-5s].<\/li>\n<li><strong>Exclure directement ce que vous ne voulez pas&nbsp;:<\/strong> le mod\u00e8le ne dispose pas d\u2019un champ d\u00e9di\u00e9 aux prompts n\u00e9gatifs. \u00c9crivez simplement vos interdictions dans le prompt.<\/li>\n<li><strong>Imposer le texte \u00e0 l\u2019image&nbsp;:<\/strong> les panneaux ou les incrustations r\u00e9ussissent le mieux lorsque vous donnez la formulation exacte entre guillemets.<\/li>\n<\/ul>\n<p>Trois exemples \u00e0 adapter&nbsp;:<\/p>\n<p><strong>Sc\u00e8ne unique et calme avec bruitages<\/strong><\/p>\n<pre style=\"white-space:pre-wrap;word-break:break-word\">In a single continuous shot, a ceramic mug of coffee steams on a wooden table next to a rain-streaked window. The camera slowly pushes in. Sound design: soft rain, a distant tram bell. No dialogue, no music.<\/pre>\n<p><strong>D\u00e9roul\u00e9 avec rep\u00e8res temporels (15 secondes)<\/strong><\/p>\n<pre style=\"white-space:pre-wrap;word-break:break-word\">[0-5s] A cyclist rides along a foggy lakeside path at dawn.\n[5-10s] She stops and takes a thermos from her bag.\n[10-15s] Wide shot: the sun breaks through the fog over the lake. Calm acoustic guitar music throughout.<\/pre>\n<p><strong>Clip produit avec inscription lisible (format portrait)<\/strong><\/p>\n<pre style=\"white-space:pre-wrap;word-break:break-word\">A slow rotating shot of a matte green water bottle on a white pedestal, soft studio light. A small sign next to it says: \"Refill. Repeat.\" Upbeat, minimal electronic music. No scene cuts, no people.<\/pre>\n<p>Pour le clip produit, vous pouvez importer votre propre photo comme image de r\u00e9f\u00e9rence. La bouteille reste alors nettement plus proche de l\u2019original dans la vid\u00e9o.<\/p>\n<h2 id=\"grenzen\">Les limites du mod\u00e8le<\/h2>\n<ul>\n<li><strong>Langue&nbsp;:<\/strong> d\u2019apr\u00e8s Google, seul l\u2019anglais a \u00e9t\u00e9 enti\u00e8rement test\u00e9. Les prompts dans d\u2019autres langues, en fran\u00e7ais par exemple, peuvent fonctionner, mais les r\u00e9sultats sont plus irr\u00e9guliers.<\/li>\n<li><strong>Personnes sur les images de r\u00e9f\u00e9rence&nbsp;:<\/strong> Google refuse les photos de personnes pr\u00e9cises et reconnaissables. Les images montrant des mineurs ne sont pas non plus accept\u00e9es dans l\u2019Espace \u00e9conomique europ\u00e9en, en Suisse et au Royaume-Uni.<\/li>\n<li><strong>Filtres de contenu&nbsp;:<\/strong> Google contr\u00f4le le prompt et la vid\u00e9o termin\u00e9e. Ce qui enfreint les r\u00e8gles de Google est bloqu\u00e9. ChatX n\u2019a aucune prise l\u00e0-dessus.<\/li>\n<li><strong>Sujets difficiles&nbsp;:<\/strong> Google cite lui-m\u00eame les sc\u00e8nes de sport rapides et la physique complexe parmi les domaines encore en chantier.<\/li>\n<li><strong>Haute r\u00e9solution&nbsp;:<\/strong> le 1080p et la 4K sont obtenus par mise \u00e0 l\u2019\u00e9chelle. L\u2019image ne contient donc pas forc\u00e9ment plus de d\u00e9tails qu\u2019en 720p.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Gemini Omni 1.2 Flash, le mod\u00e8le vid\u00e9o de Google, est arriv\u00e9 dans le g\u00e9n\u00e9rateur de vid\u00e9os de ChatX. Il produit des clips de 3 \u00e0 15 secondes avec le son. Nous d\u00e9taillons ses fonctions, le co\u00fbt en tokens selon la r\u00e9solution, ses limites, et montrons nos propres clips de test.<\/p>\n","protected":false},"author":2,"featured_media":1599,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[631],"tags":[],"class_list":["post-1628","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-gemini"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Gemini Omni 1.2 Flash cr\u00e9e des vid\u00e9os jusqu\u2019\u00e0 15 secondes - ChatX Blog<\/title>\n<meta name=\"description\" content=\"Gemini Omni 1.2 Flash arrive dans le g\u00e9n\u00e9rateur de vid\u00e9os de ChatX\u00a0: clips jusqu\u2019\u00e0 15 secondes avec le son, co\u00fbt par r\u00e9solution et conseils de prompts.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/chatx.ai\/blog\/fr\/gemini-omni-1-2-flash\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Gemini Omni 1.2 Flash cr\u00e9e des vid\u00e9os jusqu\u2019\u00e0 15 secondes - 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