Videos, live or animated, are made up of still images woven together to give an illusion of movement. The more frames a video shows in a second, the more fluid its movement. Rendering 3D art and animation and rendering videos are not all that different. When rendering 3D art, the software transforms the three-dimensional elements of a scene into a 2D image with the intended lighting, texture, and appearance of depth.
Once the artist has attached the rigs to characters and has transformed minuscule movements into a series of images or frames, animation can then take place. These images can be used in a video game, a movie, or other types of video content. So you can see how animation and video editing have similar rendering processes. In both cases, rendering is the act of stitching together elements, images, or frames into a coherent piece.
Exporting these assets is what turns them into usable files. But the two greatly differ in the time required to fulfill this process. But for a CGI-heavy movie like Shrek, render time could take 5,, hours, which was actually the case for the Pixar movie. What makes rendering 3D animation so slow is the rendering of frames or images from a 3D scene to a 2D image, according to Pixar.
We answer this in the next section. If exporting is what turns media files into a single video file, is rendering even needed after editing a video? Surprisingly, no. So why do video editors still render their work? We asked our video editors whether they think rendering is a vital step in the video editing process, and of course, their opinions varied.
Another editor does it differently, exporting their output at a low resolution first for reviewing purposes. Every editor has a unique way of approaching their work in the same way an artist approaches their canvas differently. Let's start with a basic understanding of what video rendering actually means.
When you render a video project, your computer is processing all the data that goes into creating images. You experience video rendering granted at smaller scale every time you look at your computer, the images on your screen have all been rendered to produce the website, photo or video you are looking at. For video editors, rendering takes place in the editing software.
For smooth playback of your project or creating stunning graphics and effects your computer has to render that data to produce the image. This process can be one of the most intensive on your workstation hardware. Real time rendering is what happens when you are browsing the internet or looking at basic graphics.
Your computer can handle those quickly but there is a limit to the complexity of what can be rendered in real time. In order to make a video good looking, you will need to add one or multiple effects and enhancements. Some transitions are also required in case of joining multiple videos. Quite often, your video edit will also contain several callouts, animated texts, and the credits section.
Not to mention the various intro screens, and motion captures. All these effects, as soon as they are used in your video project, will be available in a preview render window. This window, however, will only show the approximate result. You will be able to preview the video frames in a lower quality.
Depending on your video editing software you will be able to adjust the preview render quality, but this will also affect the speed and response time of your video editor.
Now, after the editing process is complete — you will have to render your video. Rendering will allow your work to be shared via YouTube , Vimeo, or other video streaming platforms. Rendering in video editing — is a process of creating the encoded video file from your video project or a scene that you have created using the video editing software.
Sometimes, adding the powerful GPU can greatly increase the video rendering speed of some videos. Your video project can be a very simple recording from a digital camera. You may choose to not add any effects, or animations into that video. In this case, the speed of video rendering only depends on 4 main factors:.
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