{"id":2280,"date":"2026-04-23T17:23:58","date_gmt":"2026-04-23T15:23:58","guid":{"rendered":"https:\/\/askem.eu\/?p=2280"},"modified":"2026-04-23T17:24:05","modified_gmt":"2026-04-23T15:24:05","slug":"coollab-creer-des-visuels-generatifs-sans-coder-et-en-open-source","status":"publish","type":"post","link":"https:\/\/askem.eu\/en\/2026\/04\/23\/coollab-creer-des-visuels-generatifs-sans-coder-et-en-open-source\/","title":{"rendered":"Coollab : cr\u00e9er des visuels g\u00e9n\u00e9ratifs sans coder, et en open source"},"content":{"rendered":"<h2 class=\"wp-block-heading\">Coollab&nbsp;: cr\u00e9er des visuels g\u00e9n\u00e9ratifs sans coder, et en open source<\/h2>\n\n\n\n<p>Derri\u00e8re les VJ sets, les installations interactives ou les habillages anim\u00e9s de conf\u00e9rence, il y a presque toujours un moteur de visuels g\u00e9n\u00e9ratifs, souvent propri\u00e9taire (TouchDesigner, Notch, Resolume) et souvent cher. <strong><a href=\"https:\/\/coollab-art.com\">Coollab<\/a><\/strong> propose une alternative radicalement accessible&nbsp;: un logiciel open source, gratuit, pens\u00e9 pour les d\u00e9butants comme pour les VJ exigeants, qui permet de composer des visuels anim\u00e9s par n\u0153uds \u00e0 partir de formes, d&rsquo;images, de modificateurs et d&rsquo;effets de post-traitement. Le projet est port\u00e9 par une tr\u00e8s petite \u00e9quipe (un d\u00e9veloppeur \u00e0 temps plein), ce qui en fait l&rsquo;une des p\u00e9pites discr\u00e8tes de l&rsquo;\u00e9cosyst\u00e8me cr\u00e9atif libre.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Un workflow en trois temps<\/h3>\n\n\n\n<p>La promesse affich\u00e9e sur le site officiel tient en trois \u00e9tapes, et c&rsquo;est effectivement ce que l&rsquo;on retrouve d\u00e8s l&rsquo;ouverture du logiciel&nbsp;:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Partir d&rsquo;une forme ou d&rsquo;une image<\/strong>&nbsp;: cercle, carr\u00e9, bruit proc\u00e9dural, fractale, photo, vid\u00e9o\u2026 La source est le point d&rsquo;entr\u00e9e du graphe.<\/li>\n\n\n\n<li><strong>Ajouter des modificateurs<\/strong>&nbsp;: distorsions, r\u00e9p\u00e9titions, transformations g\u00e9om\u00e9triques, kal\u00e9idoscopes, d\u00e9formations temporelles. Chaque modificateur est un n\u0153ud reliable aux autres.<\/li>\n\n\n\n<li><strong>Post-traiter le r\u00e9sultat<\/strong>&nbsp;: bloom, aberration chromatique, pixelisation, grain, color grading. C&rsquo;est la couche qui donne son identit\u00e9 visuelle finale \u00e0 la composition.<\/li>\n<\/ul>\n\n\n\n<p>La force du mod\u00e8le, c&rsquo;est qu&rsquo;on peut rester au niveau des presets haut-niveau pour produire quelque chose d&rsquo;int\u00e9ressant en quelques minutes, <em>ou<\/em> descendre dans les briques bas-niveau pour tout contr\u00f4ler \u00e0 la virgule pr\u00e8s.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Pens\u00e9 pour les usages live et interactifs<\/h3>\n\n\n\n<p>L\u00e0 o\u00f9 Coollab se distingue vraiment, c&rsquo;est sur ses entr\u00e9es temps r\u00e9el, qui en font un outil utilisable pour du VJing ou des installations&nbsp;:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Audio-r\u00e9actif<\/strong>&nbsp;: les param\u00e8tres d&rsquo;un n\u0153ud peuvent \u00eatre pilot\u00e9s par l&rsquo;amplitude ou le spectre d&rsquo;une source audio.<\/li>\n\n\n\n<li><strong>Webcam<\/strong>&nbsp;: flux cam\u00e9ra utilisable comme texture ou comme d\u00e9clencheur.<\/li>\n\n\n\n<li><strong>Spout<\/strong> (entr\u00e9e et sortie)&nbsp;: standard de partage de texture vid\u00e9o entre applications sous Windows, indispensable pour interconnecter Coollab avec OBS, Resolume ou un autre outil dans une cha\u00eene de production (<a href=\"https:\/\/askem.eu\/en\/2026\/03\/26\/aaaseed-un-moteur-temps-reel-open-source-pour-creations-interactives-sur-windows\/\" type=\"post\" id=\"2134\">AAASeed<\/a> par exemple).<\/li>\n\n\n\n<li><strong>MIDI<\/strong>&nbsp;: contr\u00f4le des param\u00e8tres via un contr\u00f4leur physique (Akai APC, Novation Launchpad, etc.).<\/li>\n\n\n\n<li><strong>OSC<\/strong> (Open Sound Control)&nbsp;: pilotage \u00e0 distance depuis un autre logiciel ou une installation.<\/li>\n\n\n\n<li><strong>HTTP<\/strong>&nbsp;: chaque param\u00e8tre exposable via requ\u00eate HTTP, ce qui ouvre la porte \u00e0 l&rsquo;int\u00e9gration dans des sc\u00e9nographies pilot\u00e9es par des capteurs, des interfaces web ou des agents.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Extensible en GLSL, \u00e0 port\u00e9e de script<\/h3>\n\n\n\n<p>Coollab laisse aux utilisateurs avanc\u00e9s la possibilit\u00e9 d&rsquo;\u00e9crire leurs propres n\u0153uds en GLSL (le langage de shaders d&rsquo;OpenGL) en quelques lignes seulement. Un tutoriel d\u00e9di\u00e9 accompagne le processus. Cela signifie qu&rsquo;un utilisateur qui conna\u00eet d\u00e9j\u00e0 Shadertoy peut porter ses shaders dans Coollab et en faire des briques r\u00e9utilisables, combinables avec tous les autres n\u0153uds de l&rsquo;\u00e9cosyst\u00e8me. Ce pont GLSL \u2192 n\u0153ud fait toute la diff\u00e9rence pour qui veut aller au-del\u00e0 des presets sans repartir de z\u00e9ro dans un moteur complet.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Un positionnement singulier dans l&rsquo;\u00e9cosyst\u00e8me<\/h3>\n\n\n\n<p>Il existe plusieurs familles d&rsquo;outils pour les visuels g\u00e9n\u00e9ratifs&nbsp;: les moteurs nodaux lourds et propri\u00e9taires (TouchDesigner, Notch), les environnements de creative coding code-first (Processing, openFrameworks, p5.js), les VJ tools commerciaux (Resolume, VDMX), et des alternatives open source comme <a href=\"https:\/\/coollab-art.com\">AAASeed<\/a> ou Magic Music Visuals. Coollab occupe un espace sp\u00e9cifique&nbsp;: visuel et nodal comme TouchDesigner, mais gratuit et libre&nbsp;; accessible comme un VJ tool, mais extensible en GLSL. Ce positionnement le rend particuli\u00e8rement adapt\u00e9 aux artistes, aux ateliers de m\u00e9diation, et \u00e0 toute structure qui veut produire des visuels de qualit\u00e9 sans d\u00e9pendre d&rsquo;une licence payante.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Limites \u00e0 conna\u00eetre<\/h3>\n\n\n\n<p>L&rsquo;\u00e9quipe est volontairement petite&nbsp;: un d\u00e9veloppeur \u00e0 temps plein, quelques contributeurs ponctuels, ce qui peut se ressentir sur la cadence d&rsquo;\u00e9volutions et la couverture des cas d&rsquo;usage extr\u00eames. Le logiciel est principalement pens\u00e9 pour Windows (le support macOS\/Linux existe mais est moins \u00e9prouv\u00e9, notamment sur Spout qui est un standard Windows). Les performances temps r\u00e9el d\u00e9pendent fortement du GPU. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Par o\u00f9 commencer<\/h3>\n\n\n\n<p>Le t\u00e9l\u00e9chargement est direct depuis <em>coollab-art.com\/Download<\/em>, la playlist vid\u00e9o d&rsquo;introduction suffit pour une premi\u00e8re composition en moins d&rsquo;une heure, et la <em>Gallery<\/em> du site montre assez d&rsquo;exemples pour juger si le rendu visuel correspond aux besoins. Pour une utilisation en spectacle ou en installation, pr\u00e9voir une phase de test d\u00e9di\u00e9e sur la cha\u00eene MIDI\/OSC\/Spout&nbsp;: c&rsquo;est l\u00e0 que se jouent la fiabilit\u00e9 du signal et l&rsquo;int\u00e9gration r\u00e9ussie avec le reste du dispositif sc\u00e9nique.<\/p>\n\n\n\n<p>Coollab est un bel exemple de ce que l&rsquo;open source fait de mieux&nbsp;: un outil sp\u00e9cialis\u00e9, poli, vraiment utilisable, port\u00e9 par une poign\u00e9e de passionn\u00e9s et qui place la cr\u00e9ation visuelle g\u00e9n\u00e9rative \u00e0 la port\u00e9e de tout le monde, sans ticket d&rsquo;entr\u00e9e financier.<\/p>","protected":false},"excerpt":{"rendered":"<p>Coollab&nbsp;: cr\u00e9er des visuels g\u00e9n\u00e9ratifs sans coder, et en open source Derri\u00e8re les VJ sets, les installations interactives ou les habillages anim\u00e9s de conf\u00e9rence, il y a presque toujours un moteur de visuels g\u00e9n\u00e9ratifs, souvent propri\u00e9taire (TouchDesigner, Notch, Resolume) et souvent cher. Coollab propose une alternative radicalement accessible&nbsp;: un logiciel open source, gratuit, pens\u00e9 pour [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2281,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ocean_post_layout":"","ocean_both_sidebars_style":"","ocean_both_sidebars_content_width":0,"ocean_both_sidebars_sidebars_width":0,"ocean_sidebar":"","ocean_second_sidebar":"","ocean_disable_margins":"enable","ocean_add_body_class":"","ocean_shortcode_before_top_bar":"","ocean_shortcode_after_top_bar":"","ocean_shortcode_before_header":"","ocean_shortcode_after_header":"","ocean_has_shortcode":"","ocean_shortcode_after_title":"","ocean_shortcode_before_footer_widgets":"","ocean_shortcode_after_footer_widgets":"","ocean_shortcode_before_footer_bottom":"","ocean_shortcode_after_footer_bottom":"","ocean_display_top_bar":"default","ocean_display_header":"default","ocean_header_style":"","ocean_center_header_left_menu":"","ocean_custom_header_template":"","ocean_custom_logo":0,"ocean_custom_retina_logo":0,"ocean_custom_logo_max_width":0,"ocean_custom_logo_tablet_max_width":0,"ocean_custom_logo_mobile_max_width":0,"ocean_custom_logo_max_height":0,"ocean_custom_logo_tablet_max_height":0,"ocean_custom_logo_mobile_max_height":0,"ocean_header_custom_menu":"","ocean_menu_typo_font_family":"","ocean_menu_typo_font_subset":"","ocean_menu_typo_font_size":0,"ocean_menu_typo_font_size_tablet":0,"ocean_menu_typo_font_size_mobile":0,"ocean_menu_typo_font_size_unit":"px","ocean_menu_typo_font_weight":"","ocean_menu_typo_font_weight_tablet":"","ocean_menu_typo_font_weight_mobile":"","ocean_menu_typo_transform":"","ocean_menu_typo_transform_tablet":"","ocean_menu_typo_transform_mobile":"","ocean_menu_typo_line_height":0,"ocean_menu_typo_line_height_tablet":0,"ocean_menu_typo_line_height_mobile":0,"ocean_menu_typo_line_height_unit":"","ocean_menu_typo_spacing":0,"ocean_menu_typo_spacing_tablet":0,"ocean_menu_typo_spacing_mobile":0,"ocean_menu_typo_spacing_unit":"","ocean_menu_link_color":"","ocean_menu_link_color_hover":"","ocean_menu_link_color_active":"","ocean_menu_link_background":"","ocean_menu_link_hover_background":"","ocean_menu_link_active_background":"","ocean_menu_social_links_bg":"","ocean_menu_social_hover_links_bg":"","ocean_menu_social_links_color":"","ocean_menu_social_hover_links_color":"","ocean_disable_title":"default","ocean_disable_heading":"default","ocean_post_title":"","ocean_post_subheading":"","ocean_post_title_style":"","ocean_post_title_background_color":"","ocean_post_title_background":0,"ocean_post_title_bg_image_position":"","ocean_post_title_bg_image_attachment":"","ocean_post_title_bg_image_repeat":"","ocean_post_title_bg_image_size":"","ocean_post_title_height":0,"ocean_post_title_bg_overlay":0.5,"ocean_post_title_bg_overlay_color":"","ocean_disable_breadcrumbs":"default","ocean_breadcrumbs_color":"","ocean_breadcrumbs_separator_color":"","ocean_breadcrumbs_links_color":"","ocean_breadcrumbs_links_hover_color":"","ocean_display_footer_widgets":"default","ocean_display_footer_bottom":"default","ocean_custom_footer_template":"","osh_disable_topbar_sticky":"default","osh_disable_header_sticky":"default","osh_sticky_header_style":"default","osh_sticky_header_effect":"","osh_custom_sticky_logo":0,"osh_custom_retina_sticky_logo":0,"osh_custom_sticky_logo_height":0,"osh_background_color":"","osh_links_color":"","osh_links_hover_color":"","osh_links_active_color":"","osh_links_bg_color":"","osh_links_hover_bg_color":"","osh_links_active_bg_color":"","osh_menu_social_links_color":"","osh_menu_social_hover_links_color":"","ocean_post_oembed":"","ocean_post_self_hosted_media":"","ocean_post_video_embed":"","ocean_link_format":"","ocean_link_format_target":"self","ocean_quote_format":"","ocean_quote_format_link":"post","ocean_gallery_link_images":"on","ocean_gallery_id":[],"footnotes":""},"categories":[20],"tags":[],"class_list":["post-2280","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-3d","entry","has-media"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Coollab : cr\u00e9er des visuels g\u00e9n\u00e9ratifs sans coder, et en open source - askem<\/title>\n<meta name=\"description\" content=\"ASKEM BUREAU D&#039;\u00c9TUDES ET DE FORMATION NUM\u00c9RIQUE. 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