Ceci est une ancienne révision du document !
It's Render time! We have encountered render already (by pressing F12 to render an image) in some previous FCM issues, but now we are going to render an animation. Press the render Tab (right) from the Properties window. First of all, there are 3 choices under Render context: Render (renders a single image), Animation (renders the entire animation), and Audio (renders a sound file of your animation). We’re interested in the second choice (Animation) as we want to render the entire movie. But before pressing this button we have to inspect some things first. A good question to ask yourself before rendering something is “what is the next use of my finished file”.
C'est le temps du Rendu ! Nous avons déjà rencontré Rendu (en appuyant sur F12 pour avoir le rendu d'une image) dans certains numéros précédents du FCM, mais maintenant nous allons obtenir le rendu d'une animation.
Appuyer sur l'onglet Rendu (à droite) de la fenêtre des propriétés.
Tout d'abord, il y a 3 choix de contexte de Rendu : Render (rendu d'une simple image), Animation (rendu d'une animation complète) et Audio (rendu d'un fichier son de votre animation).
Nous sommes intéressé par le deuxième choix (Animation) car nous voulons obtenir le rendu de toute l'animation. Mais avant d'appuyer sur ce bouton, nous avons quelques points à inspecter.
If, for example, you work in the film-making industry as I do, maybe you have to render your animation as an image sequence so that every other co-worker can have the image sequence ready for importing to his suite (avid, sony vegas, final cut or premiere for editing, flame or nuke for compositing, etc.), and they don't have to worry about codecs. If you want your rendered file to be ready for youtube or vimeo, you have to render it as a mp4, a quicktime or a mpeg2 file – youtube and vimeo accept other video files too. Lets assume that we want a video file to show our creation to our friends. A quicktime file with an H.264 codec will do the job.
Now, let’s move on to the next subtext called Dimensions. Here we can adjust the resolution of our exported animation, the frame range that we want to render (in case we want to render just a portion of the entire animation), next we can adjust the Aspect Ratio, the Frame rate (for Europe it’s 25fps), if we want to add borders in our render we have to tick Border, and Time Remapping where we can adjust the time, making the entire animation play slower or faster. I suggest we use some of the presets under the Render Presets pull-down menu. Leave all the other settings to their defaults except the Output subtext. This is where we choose where to put the rendered file or image and also what type of video or image sequence to render. Let’s select H.264 from the pull-down menu (which, by default, has PNG). Another subtext appears called Encoding. Here we can select Quicktime for the Format and H.264 for Codec.
Leave the other settings to their defaults. (The bitrate defines the quality of your rendering, the higher the better, but higher also creates larger files and takes much more time to render). We don't have audio so we don't have to mess with that for now. Now, we are ready to render our animation. By pressing Ctrl-F12 we start the rendering process. Remember that the rendering process is by far the heaviest user of computing power, so, depending from the scene's weight that you are rendering, the whole rendering process will take from some minutes to hours or even days to finish! By “scene weight” I mean the number of objects, the lighting of our scene, the detail of our objects, the textures, etc.
Finally after a while (depending on your PC's power) we have the video file or the image files that we rendered. These are the most basic things to know in order to render a standard scene. The Rendering process is a whole separate study in Computer Graphics and Film Industry. If you are interested in the Blender Game Engine, as I covered in last month’s issue, check out this interesting site: http://www.tutorialsforblender3d.com/