{"id":11695,"date":"2024-04-24T10:27:07","date_gmt":"2024-04-24T08:27:07","guid":{"rendered":"https:\/\/kainoo.ch\/?p=11695"},"modified":"2024-04-24T11:05:17","modified_gmt":"2024-04-24T09:05:17","slug":"quest-ce-quune-video-360","status":"publish","type":"post","link":"https:\/\/kainoo.ch\/de\/quest-ce-quune-video-360\/","title":{"rendered":"Qu\u2019est-ce qu\u2019une vid\u00e9o 360\u00b0 ?"},"content":{"rendered":"<p>[et_pb_section fb_built=&#8220;1&#8243; _builder_version=&#8220;4.23.4&#8243; _module_preset=&#8220;default&#8220; da_disable_devices=&#8220;off|off|off&#8220; global_colors_info=&#8220;{}&#8220; theme_builder_area=&#8220;post_content&#8220; da_is_popup=&#8220;off&#8220; da_exit_intent=&#8220;off&#8220; da_has_close=&#8220;on&#8220; da_alt_close=&#8220;off&#8220; da_dark_close=&#8220;off&#8220; da_not_modal=&#8220;on&#8220; da_is_singular=&#8220;off&#8220; da_with_loader=&#8220;off&#8220; da_has_shadow=&#8220;on&#8220;][et_pb_row _builder_version=&#8220;4.23.4&#8243; _module_preset=&#8220;default&#8220; global_colors_info=&#8220;{}&#8220; theme_builder_area=&#8220;post_content&#8220;][et_pb_column type=&#8220;4_4&#8243; _builder_version=&#8220;4.23.4&#8243; _module_preset=&#8220;default&#8220; global_colors_info=&#8220;{}&#8220; theme_builder_area=&#8220;post_content&#8220;][et_pb_text _builder_version=&#8220;4.23.4&#8243; _module_preset=&#8220;default&#8220; global_colors_info=&#8220;{}&#8220; theme_builder_area=&#8220;post_content&#8220;]<\/p>\n<h1><span lang=\"FR-CH\">Diff\u00e9rents formats<o:p><\/o:p><\/span><\/h1>\n<h2><\/h2>\n<p>[\/et_pb_text][et_pb_text _builder_version=&#8220;4.23.4&#8243; _module_preset=&#8220;default&#8220; global_colors_info=&#8220;{}&#8220; theme_builder_area=&#8220;post_content&#8220;]<\/p>\n<p><span>Les ordinateurs sont des appareils digitaux et ils travaillent avec des images rectangulaires compos\u00e9es de pixels. Il n\u2019est pas possible de repr\u00e9senter une image sph\u00e9rique directement en informatique. Pour ceci nous travaillons avec des images carr\u00e9es qui sont ensuite appliqu\u00e9es \u00e0 une sph\u00e8re via des projections. La repr\u00e9sentation de la sc\u00e8ne dans l\u2019image peut varier comme nous allons voir ci-apr\u00e8s. <\/span><\/p>\n<p>[\/et_pb_text][et_pb_image src=&#8220;https:\/\/kainoo.ch\/wp-content\/uploads\/2024\/04\/Image1.png&#8220; title_text=&#8220;Image1&#8243; align=&#8220;center&#8220; _builder_version=&#8220;4.23.4&#8243; _module_preset=&#8220;default&#8220; width=&#8220;100%&#8220; max_width=&#8220;100%&#8220; min_height=&#8220;416px&#8220; height=&#8220;298px&#8220; max_height=&#8220;602px&#8220; global_colors_info=&#8220;{}&#8220; theme_builder_area=&#8220;post_content&#8220;][\/et_pb_image][et_pb_text _builder_version=&#8220;4.23.4&#8243; _module_preset=&#8220;default&#8220; header_6_font_size=&#8220;13px&#8220; global_colors_info=&#8220;{}&#8220; theme_builder_area=&#8220;post_content&#8220;]<\/p>\n<h6 style=\"text-align: center;\"><em>Figure 1 &#8211; Exemple reprojection exag\u00e9r\u00e9e pour illustration<\/em><\/h6>\n<p><em><\/em><\/p>\n<p><em><\/em><\/p>\n<p><em><\/em><\/p>\n<h3>Panoramique (360\u00b0\/180\u00b0)<\/h3>\n<p>[\/et_pb_text][et_pb_image src=&#8220;https:\/\/kainoo.ch\/wp-content\/uploads\/2024\/04\/Capture360_Scene_Maraiches.png&#8220; title_text=&#8220;Capture360_Scene_Maraiches&#8220; _builder_version=&#8220;4.23.4&#8243; _module_preset=&#8220;default&#8220; global_colors_info=&#8220;{}&#8220; theme_builder_area=&#8220;post_content&#8220;][\/et_pb_image][et_pb_text _builder_version=&#8220;4.23.4&#8243; _module_preset=&#8220;default&#8220; header_6_font_size=&#8220;13px&#8220; locked=&#8220;off&#8220; global_colors_info=&#8220;{}&#8220; theme_builder_area=&#8220;post_content&#8220;]<\/p>\n<h6 style=\"text-align: center;\"><em>Figure 2 &#8211; Exemple image format panoramique non-projet\u00e9e<\/em><\/h6>\n<p><em><\/em><\/p>\n<h3><\/h3>\n<p>[\/et_pb_text][et_pb_text _builder_version=&#8220;4.23.4&#8243; _module_preset=&#8220;default&#8220; global_colors_info=&#8220;{}&#8220; theme_builder_area=&#8220;post_content&#8220;]<\/p>\n<p><span>Le projection panoramique, ou projection cylindrique \u00e9quidistante, est une repr\u00e9sentation qui peut para\u00eetre tr\u00e8s logique et naturelle. Ceci est d\u00fb au fait qu\u2019on y a \u00e9t\u00e9 bien habitu\u00e9, en effet c\u2019est une repr\u00e9sentation quasi identique \u00e0 un atlas de plan\u00e8te, cependant on regarde la sph\u00e8re depuis l\u2019int\u00e9rieur et pas depuis l\u2019ext\u00e9rieur ici. Cette m\u00e9thode de projection est la plus commune car elle a une bonne distribution de qualit\u00e9 \u00e0 la hauteur des yeux, mais si on approche les p\u00f4les de la sph\u00e8re la qualit\u00e9 va diminuer car les pixels seront plus \u00e9tir\u00e9s que ceux au centre.<\/span><\/p>\n<p>[\/et_pb_text][et_pb_text _builder_version=&#8220;4.23.4&#8243; _module_preset=&#8220;default&#8220; header_6_font_size=&#8220;13px&#8220; locked=&#8220;off&#8220; global_colors_info=&#8220;{}&#8220; theme_builder_area=&#8220;post_content&#8220;]<\/p>\n<p>&nbsp;<\/p>\n<h3><span lang=\"FR-CH\">Cubemap \/ 6-cubeface<o:p><\/o:p><\/span><\/h3>\n<p>[\/et_pb_text][et_pb_image src=&#8220;https:\/\/kainoo.ch\/wp-content\/uploads\/2024\/04\/cube_map2.png&#8220; title_text=&#8220;cube_map2&#8243; align=&#8220;center&#8220; _builder_version=&#8220;4.23.4&#8243; _module_preset=&#8220;default&#8220; global_colors_info=&#8220;{}&#8220; theme_builder_area=&#8220;post_content&#8220;][\/et_pb_image][et_pb_text _builder_version=&#8220;4.23.4&#8243; _module_preset=&#8220;default&#8220; locked=&#8220;off&#8220; global_colors_info=&#8220;{}&#8220; theme_builder_area=&#8220;post_content&#8220;]<\/p>\n<p><span>Cette technique a \u00e9t\u00e9 principalement utilis\u00e9e dans les applications temps r\u00e9el, comme les jeux vid\u00e9o, sous le nom de Cubemap. Elle y \u00e9tait mieux adapt\u00e9e car le calcul de reprojection est plus facile \u00e0 effectuer et ceci a pour effet une meilleure performance. On repr\u00e9sente la projection par un cube \u00e0 6 faces qui repr\u00e9sente chaque direction du regard. On reprojette ensuite ce cube \u00e0 l\u2019infini par rapport au point de vue de la sc\u00e8ne et l\u2019illusion d\u2019une sph\u00e8re est bien reconstitu\u00e9e. <\/span><\/p>\n<p>[\/et_pb_text][et_pb_image src=&#8220;https:\/\/kainoo.ch\/wp-content\/uploads\/2024\/04\/cubemap_3x2.png&#8220; title_text=&#8220;cubemap_3x2&#8243; align=&#8220;center&#8220; _builder_version=&#8220;4.23.4&#8243; _module_preset=&#8220;default&#8220; global_colors_info=&#8220;{}&#8220; theme_builder_area=&#8220;post_content&#8220;][\/et_pb_image][et_pb_text _builder_version=&#8220;4.23.4&#8243; _module_preset=&#8220;default&#8220; locked=&#8220;off&#8220; global_colors_info=&#8220;{}&#8220; theme_builder_area=&#8220;post_content&#8220;]<\/p>\n<p><span>On peut voir cette image comme un cube d\u00e9coup\u00e9 en 2 \u00ab\u00a0C\u00a0\u00bb qui sont imbriqu\u00e9s selon l\u2019illustration ci-dessous.<\/span><\/p>\n<p>[\/et_pb_text][et_pb_image src=&#8220;https:\/\/kainoo.ch\/wp-content\/uploads\/2024\/04\/Capture-decran-2024-03-27-172250.png&#8220; title_text=&#8220;Capture d\u2019\u00e9cran 2024-03-27 172250&#8243; _builder_version=&#8220;4.23.4&#8243; _module_preset=&#8220;default&#8220; global_colors_info=&#8220;{}&#8220; theme_builder_area=&#8220;post_content&#8220;][\/et_pb_image][et_pb_text _builder_version=&#8220;4.23.4&#8243; _module_preset=&#8220;default&#8220; locked=&#8220;off&#8220; global_colors_info=&#8220;{}&#8220; theme_builder_area=&#8220;post_content&#8220;]<\/p>\n<h3><span lang=\"FR-CH\">Re-projection entre les variantes<o:p><\/o:p><\/span><\/h3>\n<p>[\/et_pb_text][et_pb_text _builder_version=&#8220;4.23.4&#8243; _module_preset=&#8220;default&#8220; locked=&#8220;off&#8220; global_colors_info=&#8220;{}&#8220; theme_builder_area=&#8220;post_content&#8220;]<\/p>\n<p><span>Certaines applications ne supportent pas automatiquement le format qu\u2019on a \u00e0 disposition. Dans ce cas, on peut reprojeter entre ces formats avec des outils comme Photoshop (pour les images) ou FFMPEG (pour les images et les vid\u00e9os). C\u2019est une op\u00e9ration avec de la perte d\u2019information, donc il vaut mieux toujours conserver la source et travailler \u00e0 partir de celle-ci pour la cr\u00e9ation de nouvelles projections.<\/span><\/p>\n<p><span>FFMPEG est \u00e9galement tr\u00e8s bien adapt\u00e9 \u00e0 changer la r\u00e9solution ou la bande passante des vid\u00e9os pour optimiser la taille de la vid\u00e9o par rapport \u00e0 la qualit\u00e9 souhait\u00e9e ou l\u2019appareil utilis\u00e9e pour l\u2019affichage. En effet, un Meta Quest 3 est relativement puissant, mais il ne pourra pas lire une vid\u00e9o avec une large bande passante (250Mbps ou plus haut). Cela aura aussi un effet sur la taille du fichier qui fera environ 30MB par seconde de vid\u00e9o.<\/span><\/p>\n<p>[\/et_pb_text][et_pb_text _builder_version=&#8220;4.23.4&#8243; _module_preset=&#8220;default&#8220; locked=&#8220;off&#8220; global_colors_info=&#8220;{}&#8220; theme_builder_area=&#8220;post_content&#8220;]<\/p>\n<h2><span lang=\"FR-CH\">St\u00e9r\u00e9oscopie<o:p><\/o:p><\/span><\/h2>\n<p>[\/et_pb_text][et_pb_text _builder_version=&#8220;4.23.4&#8243; _module_preset=&#8220;default&#8220; locked=&#8220;off&#8220; global_colors_info=&#8220;{}&#8220; theme_builder_area=&#8220;post_content&#8220;]<\/p>\n<p><span>La st\u00e9r\u00e9oscopie est le terme utilis\u00e9 pour la technique qui reproduit notre vision humaine \u00e0 2 yeux. Elle permet de berner le cerveau pour lui faire croire qu\u2019il voit une sc\u00e8ne en profondeur, mais elle a du sens uniquement lorsqu\u2019elle est utilis\u00e9e avec un casque de r\u00e9alit\u00e9 virtuelle pour afficher chaque image \u00e0 son \u0153il respectif.<\/span><\/p>\n<p><span>Vous vous demandez peut-\u00eatre comment, c\u2019est possible de capturer une image 360 st\u00e9r\u00e9oscopique\u00a0? Si on utilise 2 cam\u00e9ras 360 l\u2019une \u00e0 c\u00f4t\u00e9 de l\u2019autre, on verra chaque fois la cam\u00e9ra dans l\u2019autre capture. Autrement on pourrait capturer les images une apr\u00e8s l\u2019autre, mais cela devient compliqu\u00e9 et p\u00e9nible de faire des images, sans parler du fait que cela devient impossible pour une vid\u00e9o. En r\u00e9alit\u00e9, les captures se font sur des appareils photographiques de forme cylindrique ou sph\u00e9rique avec 3 ou plus de cam\u00e9ras (6 ou 8 cam\u00e9ras est le plus courant).<\/span><\/p>\n<p><span>Dans le pr\u00e9c\u00e9dent paragraphe nous n\u2019avons pas parl\u00e9 d\u2019un aspect important\u00a0: si on part du principe qu\u2019on fait 2 captures l\u2019une \u00e0 c\u00f4t\u00e9 de l\u2019autre, le d\u00e9calage des yeux ne correspondra plus lorsqu\u2019on tourne la t\u00eate. Il faut comprendre qu\u2019en fait les appareils qui produisent des images ou des vid\u00e9os 360 st\u00e9r\u00e9oscopiques doivent faire beaucoup de calcul pour ajuster l\u2019image 360 pour donner l\u2019impression que le d\u00e9calage des yeux donne un bon effet de st\u00e9r\u00e9oscopie. Nous n\u2019allons pas aller dans les d\u00e9tails des techniques utilis\u00e9es.<\/span><\/p>\n<p><span>N\u00e9cessite cam\u00e9ra 360 sp\u00e9ciale avec minimum 3 cam\u00e9ras. Mat\u00e9riel tr\u00e8s co\u00fbteux, exemple ci-contre est \u00e0 environ 15&#8217;000.-. Ensuite, du c\u00f4t\u00e9 logiciel on a une reconstruction qui repr\u00e9sente la sc\u00e8ne st\u00e9r\u00e9oscopique avec uniquement 2 images.<\/span><\/p>\n<p>[\/et_pb_text][et_pb_image src=&#8220;https:\/\/kainoo.ch\/wp-content\/uploads\/2024\/04\/Insta360_Pro2.png&#8220; title_text=&#8220;Insta360_Pro2&#8243; align=&#8220;center&#8220; _builder_version=&#8220;4.23.4&#8243; _module_preset=&#8220;default&#8220; global_colors_info=&#8220;{}&#8220; theme_builder_area=&#8220;post_content&#8220;][\/et_pb_image][et_pb_text _builder_version=&#8220;4.23.4&#8243; _module_preset=&#8220;default&#8220; locked=&#8220;off&#8220; global_colors_info=&#8220;{}&#8220; theme_builder_area=&#8220;post_content&#8220;]<\/p>\n<p><span>Au niveau du fichier image ou vid\u00e9o, les images sont g\u00e9n\u00e9ralement dispos\u00e9es l\u2019une en-dessus de l\u2019autre. L\u2019image du haut correspond g\u00e9n\u00e9ralement \u00e0 l\u2019\u0153il de droite, et l\u2019image du bas \u00e0 l\u2019\u0153il de gauche. Le logiciel qui lit le fichier va lui ensuite s\u00e9parer la texture et l\u2019afficher correctement.<\/span><\/p>\n<p>[\/et_pb_text][et_pb_text _builder_version=&#8220;4.23.4&#8243; _module_preset=&#8220;default&#8220; locked=&#8220;off&#8220; global_colors_info=&#8220;{}&#8220; theme_builder_area=&#8220;post_content&#8220;]<\/p>\n<h1><span>Qualit\u00e9 recommand\u00e9e<\/span><\/h1>\n<p>[\/et_pb_text][et_pb_text _builder_version=&#8220;4.23.4&#8243; _module_preset=&#8220;default&#8220; locked=&#8220;off&#8220; global_colors_info=&#8220;{}&#8220; theme_builder_area=&#8220;post_content&#8220;]<\/p>\n<p><span>Comme les pixels de l\u2019image sont distribu\u00e9 sur toute une sph\u00e8re. Un champ de vision standard est d\u2019environ 60\u00b0 \u00e0 l\u2019horizontale. Ainsi, si on prenait l\u2019\u00e9quivalent de qualit\u00e9 1080p (1920&#215;1080 pixels) pour des photos prises avec un appareil photo standard, il faudrait une photo 360 de <\/span>\u00a0pixels de large pour avoir le m\u00eame degr\u00e9 de qualit\u00e9. Si on calcule ceci pour les 2 axes, on se retrouverait avec une image d\u2019environ 120 m\u00e9gapixels. Ceci est au niveau de la qualit\u00e9 des satellites scientifiques, ainsi on doit vivre avec le compromis qu\u2019on n\u2019aura pas encore une qualit\u00e9 absolue sur nos appareils.<\/p>\n<p><span>Pour les casques de r\u00e9alit\u00e9 virtuelle, nous recommandons une r\u00e9solution de vid\u00e9o entre 4096px et 5760px de large id\u00e9alement. Au-dessus, cela devient probl\u00e9matique pour \u00eatre jou\u00e9 sur des appareils de VR mobiles haut-de-gamme, tels que des Meta Quest 2 ou des Pico Neo 4. Nous recommandons de ne pas aller au-dessous de 3000px de large pour garder un certain degr\u00e9 de qualit\u00e9, surtout en VR.<\/span><\/p>\n<p>[\/et_pb_text][et_pb_image src=&#8220;https:\/\/kainoo.ch\/wp-content\/uploads\/2024\/04\/Maraiches_1024px_champ-de-vision-60-deg.png&#8220; title_text=&#8220;Maraiches_1024px_champ de vision 60 deg&#8220; align=&#8220;center&#8220; _builder_version=&#8220;4.23.4&#8243; _module_preset=&#8220;default&#8220; global_colors_info=&#8220;{}&#8220; theme_builder_area=&#8220;post_content&#8220;][\/et_pb_image][et_pb_text _builder_version=&#8220;4.23.4&#8243; _module_preset=&#8220;default&#8220; header_6_font_size=&#8220;13px&#8220; locked=&#8220;off&#8220; global_colors_info=&#8220;{}&#8220; theme_builder_area=&#8220;post_content&#8220;]<\/p>\n<h6 style=\"text-align: center;\"><em>Figure 4 &#8211; Photo 360 de 3000px exemple<\/em><\/h6>\n<p>[\/et_pb_text][et_pb_image src=&#8220;https:\/\/kainoo.ch\/wp-content\/uploads\/2024\/04\/Maraiches_1024px_champ-de-vision-30-deg.png&#8220; title_text=&#8220;Maraiches_1024px_champ de vision 30 deg&#8220; _builder_version=&#8220;4.23.4&#8243; _module_preset=&#8220;default&#8220; global_colors_info=&#8220;{}&#8220; theme_builder_area=&#8220;post_content&#8220;][\/et_pb_image][et_pb_text _builder_version=&#8220;4.23.4&#8243; _module_preset=&#8220;default&#8220; header_6_font_size=&#8220;13px&#8220; locked=&#8220;off&#8220; global_colors_info=&#8220;{}&#8220; theme_builder_area=&#8220;post_content&#8220;]<\/p>\n<h6 style=\"text-align: center;\"><em>Figure 5 &#8211; Photo 360 3000px avec large zoom<\/em><\/h6>\n<h3><\/h3>\n<p>[\/et_pb_text][et_pb_text _builder_version=&#8220;4.23.4&#8243; _module_preset=&#8220;default&#8220; hover_enabled=&#8220;0&#8243; global_colors_info=&#8220;{}&#8220; theme_builder_area=&#8220;post_content&#8220; sticky_enabled=&#8220;0&#8243;]<\/p>\n<h2><span>Pour r\u00e9sumer<\/span><\/h2>\n<table width=\"937\" height=\"211\">\n<tbody>\n<tr>\n<td style=\"width: 303.078px;\"><span>\u00a0<\/span><\/td>\n<td style=\"width: 346.438px;\"><strong><span>Recommand\u00e9<\/span><\/strong><\/td>\n<td style=\"width: 265.484px;\"><strong><span>Minimum<\/span><\/strong><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 303.078px;\"><strong><span>R\u00e9solution<\/span><\/strong><\/td>\n<td style=\"width: 346.438px;\"><span>4096-5760px de large<\/span><\/td>\n<td style=\"width: 265.484px;\"><span>3000px de large<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 303.078px;\"><strong><span>Bande passante (minimum)<\/span><\/strong><\/td>\n<td style=\"width: 346.438px;\">35-50 Mbit\/s<br \/>(ou 50-70 Mbit\/s en H.264)<\/td>\n<td style=\"width: 265.484px;\">15-20+ Mbit\/s<br \/>(ou 20-25 Mbit\/s en H.264)<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 303.078px;\"><strong>Encodage<\/strong><\/td>\n<td style=\"width: 346.438px;\">H.265 ou H.264<\/td>\n<td style=\"width: 265.484px;\">H.265 ou H.264<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>[\/et_pb_text][et_pb_text _builder_version=&#8220;4.23.4&#8243; _module_preset=&#8220;default&#8220; global_colors_info=&#8220;{}&#8220; theme_builder_area=&#8220;post_content&#8220;]<\/p>\n<h1><span>Quels avantages\u00a0?<\/span><\/h1>\n<ul>\n<li><strong><span>Immersion visuelle<\/span><\/strong><span>, <br \/>Lorsqu\u2019on visionne la vid\u00e9o en VR, on est englob\u00e9 dans la sc\u00e8ne<\/span><\/li>\n<li><strong><span>Immersion auditive<\/span><\/strong><span><br \/>Possibilit\u00e9 d\u2019int\u00e9grer de l\u2019audio ambisonique qui enregistre l\u2019origine de tous les sons et s\u2019adapte en fonction de la rotation de la t\u00eate<\/span><\/li>\n<li><strong><span>Immersion sc\u00e9naristique<\/span><\/strong><span><br \/>On est au centre de l\u2019action car la cam\u00e9ra ne va rarement \u00eatre d\u00e9plac\u00e9e.<\/span><\/li>\n<li><strong><span>Rejouabilit\u00e9 d\u2019une vid\u00e9o<\/span><\/strong><span><br \/>Dans une vid\u00e9o 360, on ne peut pas voir tous les angles \u00e0 la fois, on voudra \u00e9ventuellement revoir la vid\u00e9o pour remarquer des choses qu\u2019on n\u2019avait jusqu\u2019alors pas remarqu\u00e9s.<\/span><\/li>\n<li><strong><span>R\u00e9alisme<\/span><\/strong><span><br \/>Comme la capture est faite \u00e0 partir d\u2019une vraie sc\u00e8ne, on sera au plus proche de la r\u00e9alit\u00e9. M\u00eame avec les avancements des appareils, les vid\u00e9os 360 enregistr\u00e9es ou rendues auront un niveau de fid\u00e9lit\u00e9 sup\u00e9rieur par rapport \u00e0 une sc\u00e8ne 3D reconstruite \u00e0 partir de la r\u00e9alit\u00e9. L\u2019\u00e9cart se r\u00e9duit en revanche d\u2019ann\u00e9e en ann\u00e9e.<\/span><\/li>\n<\/ul>\n<p>[\/et_pb_text][et_pb_text _builder_version=&#8220;4.23.4&#8243; _module_preset=&#8220;default&#8220; global_colors_info=&#8220;{}&#8220; theme_builder_area=&#8220;post_content&#8220;]<\/p>\n<h1><span>Quels inconv\u00e9nients\u00a0?<\/span><\/h1>\n<p><span>D\u00e9savantages pointilleux, si on recherche l\u2019immersion avec les 360, cela joue bien.<\/span><\/p>\n<p><span>Par rapport aux vid\u00e9os standard\u00a0:<\/span><\/p>\n<ul>\n<li><span>Les fichiers sont plus importants et il est n\u00e9cessaire d\u2019avoir une bonne bande passante si la vid\u00e9o est stream\u00e9e via le r\u00e9seau<\/span><\/li>\n<li><span>Plus difficile \u00e0 produire, tout le plateau de tournage doit \u00eatre libre\u00a0: l\u2019\u00e9quipe de tournage ne peut : pas se \u00ab\u00a0cacher\u00a0\u00bb derri\u00e8re la cam\u00e9ra, pas de perchman pour l\u2019enregistrement audio, etc. C\u2019est pourquoi il arrive de mettre les cam\u00e9ras 360 sur les acteurs directement, mais l\u2019acteur doit alors fait attention \u00e0 ne pas trop se d\u00e9placer.<\/span><\/li>\n<li><span>L\u2019utilisateur choisit o\u00f9 il veut regarder, mais il peut rater des \u00e9l\u00e9ments qu\u2019on souhaitait lui montrer. Ainsi il faut veiller \u00e0 bien le guider sur o\u00f9 regarder avec des indications visuelles ou acoustiques.<\/span><\/li>\n<\/ul>\n<p><span>Par rapport \u00e0 une sc\u00e8ne immersive 3D (visite virtuelle, jeu vid\u00e9o VR, etc.)\u00a0:<\/span><\/p>\n<ul>\n<li><span>Le point de vue reste fixe, on ne peut pas se d\u00e9placer dans la sc\u00e8ne.<\/span><\/li>\n<li><span>Pas d\u2019interaction possible, on subit la vid\u00e9o sans pouvoir agir, prendre un objet, presser un bouton, etc.<\/span><\/li>\n<li><span>Sans st\u00e9r\u00e9oscopie, l\u2019effet est bizarre en r\u00e9alit\u00e9 virtuelle car tout est \u00e0 la m\u00eame distance<br \/>Une autre option serait de faire l\u2019environnement en 3D enti\u00e8rement<\/span><\/li>\n<\/ul>\n<p>[\/et_pb_text][et_pb_text disabled_on=&#8220;on|on|on&#8220; _builder_version=&#8220;4.23.4&#8243; _module_preset=&#8220;default&#8220; disabled=&#8220;on&#8220; global_colors_info=&#8220;{}&#8220; theme_builder_area=&#8220;post_content&#8220;]<\/p>\n<h1><span>Propositions KA\u00cfNOO<\/span><\/h1>\n<p><span>Nous proposons avec notre service de location<\/span><span> un lecteur de vid\u00e9o 360 d\u00e9velopp\u00e9 in-house que nous pouvons enti\u00e8rement personnaliser selon les besoins de votre entreprise. Il permet la lecture des vid\u00e9os fournies pour des salons ou des \u00e9v\u00e9nements d\u2019entreprise.<\/span><\/p>\n<p><span>Le lecteur est tr\u00e8s simple \u00e0 l\u2019utilisation, il fonctionne enti\u00e8rement avec le regard, ainsi il n\u2019y a pas besoin de g\u00e9rer des manettes ou d\u2019expliquer des touches \u00e0 l\u2019utilisateur.<\/span><\/p>\n<p><span>Nous pouvons \u00e9galement vous proposer de produire des vid\u00e9os 360 sur mesure pour vos usages.<\/span><\/p>\n<p><span>Alors n\u2019h\u00e9sitez pas \u00e0 nous contacter pour en savoir plus.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p>[\/et_pb_text][et_pb_text disabled_on=&#8220;on|on|on&#8220; _builder_version=&#8220;4.23.4&#8243; _module_preset=&#8220;default&#8220; disabled=&#8220;on&#8220; global_colors_info=&#8220;{}&#8220; theme_builder_area=&#8220;post_content&#8220;]<\/p>\n<h1><span>Vous souhaitez le tester\u00a0?<\/span><\/h1>\n<p>KA\u00cfNOO propose un service de location pour pouvoir tester l\u2019appareil si vous ne souhaitez pas l\u2019acheter et que vous n\u2019avez pas la possibilit\u00e9 de vous d\u00e9placer aux Etats-Unis pour le procurer. Retrouvez plus d\u2019informations au sujet du casque sur notre page d\u00e9di\u00e9e \u00e0 la location du casque.<\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Diff\u00e9rents formats Les ordinateurs sont des appareils digitaux et ils travaillent avec des images rectangulaires compos\u00e9es de pixels. Il n\u2019est pas possible de repr\u00e9senter une image sph\u00e9rique directement en informatique. Pour ceci nous travaillons avec des images carr\u00e9es qui sont ensuite appliqu\u00e9es \u00e0 une sph\u00e8re via des projections. La repr\u00e9sentation de la sc\u00e8ne dans l\u2019image [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":11703,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","inline_featured_image":false,"footnotes":""},"categories":[17,57,20],"tags":[],"class_list":["post-11695","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-materiel-vr-ar-mr","category-news","category-realite-virtuelle-3d"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Qu\u2019est-ce qu\u2019une vid\u00e9o 360\u00b0 ? - Ka\u00efnoo<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/kainoo.ch\/quest-ce-quune-video-360\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Qu\u2019est-ce qu\u2019une vid\u00e9o 360\u00b0 ? 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