{"id":9838,"date":"2019-06-03T06:00:20","date_gmt":"2019-06-03T04:00:20","guid":{"rendered":"https:\/\/www.cpaonline.es\/blog\/?p=9838"},"modified":"2020-03-24T10:54:43","modified_gmt":"2020-03-24T09:54:43","slug":"como-exportar-un-video-con-canal-alfa-en-after-effects","status":"publish","type":"post","link":"https:\/\/www.cpaonline.es\/blog\/postproduccion-digital\/como-exportar-un-video-con-canal-alfa-en-after-effects\/","title":{"rendered":"C\u00f3mo exportar un v\u00eddeo con canal alfa en After Effects"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">A veces, necesitamos que nuestros v\u00eddeos tengan informaci\u00f3n de transparencia para un proyecto. Si est\u00e1s aprendiendo a utilizar Adobe After Effects, es posible que no sepas c\u00f3mo incluir dicha informaci\u00f3n de transparencia en sus exportaciones.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Este es un aspecto importante de los gr\u00e1ficos en movimiento porque es muy \u00fatil a la hora representar elementos gr\u00e1ficos que podremos utilizar en otros montajes de v\u00eddeo. De hecho, con la transparencia, nos podemos ahorrar mucho trabajo, con un simple arrastrar y soltar los archivos sobre la pista de v\u00eddeo. Por tanto, estamos hablando de exportar v\u00eddeo con un canal alfa para conservar dicha transparencia.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">El canal alfa<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Como seguramente ya sabr\u00e1s, los archivos de v\u00eddeo se componen de canales rojo, verde y azul (RGB). Pero, \u00bfsab\u00edas que existe un canal m\u00e1s?  Este cuarto canal se denomina canal alfa. No obstante, solo ciertos c\u00f3decs de v\u00eddeo pueden incluir un alfa. Si agregas una secuencia a la cola de procesamiento en After Effects, por defecto no incluir\u00e1 un canal alfa. Esto significa que los gr\u00e1ficos carecer\u00e1n de informaci\u00f3n de transparencia en el archivo final. Entonces, \u00bfc\u00f3mo conseguimos obtener dicha transparencia en After Effects?<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Transparencia y colores de fondo<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f3mo ya hemos comentado, el After effects no muestra por defecto el canal de transparencia por defecto en el panel de control. En su lugar, se ve el fondo de la composici\u00f3n. As\u00ed que este es el primer cambio que debemos realizar.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Si queremos cambiar el color de fondo deberemos ir a Composici\u00f3n&gt; Configuraci\u00f3n de composici\u00f3n. Para ver r\u00e1pidamente la transparencia tan solo debemos hacer clic en el bot\u00f3n Alternar transparencia en la parte inferior del panel Composici\u00f3n. Para ver los canales de forma individual podremos verlo si pulsamos el bot\u00f3n de Mostrar canal.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Exportando con Transparencia<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Al exportar un archivo desde la cola de procesamiento, After Effects establece de forma predeterminada del color de fondo de la composici\u00f3n. Para exportar con la transparencia tan solo habr\u00e1 que seguir estos pasos: <\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Agregar a la cola de procesamiento<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Primero, querr\u00e1 agregar su secuencia a la cola de procesamiento.  Composici\u00f3n> Agregar a la cola de procesamiento.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Incluir el canal alfa<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A continuaci\u00f3n, haga clic en \u00abSin p\u00e9rdida\u00bb para que aparezca la configuraci\u00f3n del m\u00f3dulo de salida. Justo debajo de \u00abSalida de v\u00eddeo\u00bb, abra el men\u00fa desplegable del canal. Seleccione \u00abRGB + Alpha\u00bb, y luego haga clic en Aceptar. Especificaremos d\u00f3nde guardaremos el v\u00eddo y finalmente pulsaremos \u00abRenderizar\u00bb.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ahora ya tenemos el v\u00eddeo listo para utilizar en cualquier edici\u00f3n <strong>\u00bfquieres aprender m\u00e1s t\u00e9cnicas para que tus v\u00eddeos se vean m\u00e1s profesionales?<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Te ense\u00f1amos a renderizar un v\u00eddeo con fondo trasnparente en After Effetts.<\/p>\n","protected":false},"author":20,"featured_media":9839,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[24],"tags":[2148,1407],"class_list":["post-9838","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-postproduccion-digital","tag-after-effects","tag-curso-de-postproduccion"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"Sigue paso a paso este tutorial para conseguir que tus v\u00eddeos tengan el fondo transparente. 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