Blender Render Output Settings: Resolution, Framing, and FPS

What you’ll learn in this guide

When preparing a Blender scene for rendering, output settings such as resolution, aspect ratio, and animation frame rate determine what the final file will look like. In this guide, we’ll cover how to set horizontal and vertical pixel dimensions using the basic options in Blender’s Format panel, create a low-resolution test render, and render only part of an image. We’ll also explain what FPS and Base mean for animation.

These settings are more than just a technical delivery step. In architectural visualization, choosing the dimensions correctly from the outset helps ensure an image is suitable for its intended use when preparing different framings and output sizes from the same scene. However, the source guide does not recommend a resolution, frame rate, or hardware requirement for a specific project. Values should therefore be chosen according to delivery requirements; the information here focuses on what each option does.

Requirements

You’ll need a working scene in Blender and access to the Format panel, where the output settings are located. The Blender manual used as the source is an online document and does not specify which Blender version to use. It also provides no information about whether an account is required. The manual itself is published under the CC BY-SA 4.0 license; this is the license information for the document used to prepare this guide.

If you’re preparing a still image, you can focus on resolution, scale, and, if needed, the render region. For animation output, you should also check the frame rate settings. Choose values based on the delivery dimensions, framing, and animation requirements. Since the source does not provide a ready-made table of project-specific values, we do not recommend specific numerical settings here.

Output settings, step by step

1. Set the horizontal and vertical resolution. The Resolution X and Resolution Y fields in the Format panel show the image’s horizontal and vertical pixel counts. Decide whether the output will be landscape or portrait and what dimensions are required, then enter the two values. According to the Blender manual, you can also right-click the fields and choose Swap Dimensions to switch the X and Y values. This means you don’t have to edit both values manually to change the orientation.

2. Start with a small test render. The Percentage slider scales the render size up or down relative to the Resolution values. To check the overall composition and framing, you can lower this value to create a smaller test output. This option does not replace the resolution fields; it changes the render size in relation to those values. During testing, check whether the framing and overall appearance work rather than evaluating detail at the final output size. Review the scale value again before creating the final output.

3. Change the pixel aspect ratio only when needed. Aspect X and Aspect Y control the shape of a pixel along each axis. The Blender manual notes that this setting can be used for situations such as older televisions with non-square pixels. Such a ratio may deliberately distort the image so it appears stretched on a computer screen, with the aim of making it look correct on the target television. For a standard computer image, keeping the default values is a cautious approach unless there’s a reason to change them. An incorrect pixel ratio may require rescaling and reduce image quality.

4. Render only part of the image if needed. Render Region lets you process a specific part of the view rather than the entire frame. How to define this area is explained in a separate Render Region document; because the source text used here does not describe the selection method, we’re not adding any further usage steps. When Crop to Render Region is enabled, the output is cropped to the render region’s dimensions. If this option is not enabled, the area around the region has a transparent background. Keep this difference in mind when checking the framing of the final file.

5. Check the frame rate if you’re rendering an animation. Frame Rate is the number of frames displayed per second in an animation. The menu includes common frame rate options; if you need a custom value, choose Custom to access the FPS and Base settings. FPS specifies the frame rate, while Base serves as the denominator in a fractional representation; the ratio is expressed as FPS/Base. The source document cites NTSC as an example of a standard that requires a more precise ratio, but does not recommend a value for any specific project. Use the frame rate specified in the delivery requirements.

Common mistakes and checklist

One of the most common sources of confusion is treating Percentage as the same thing as the final resolution. Resolution X and Y set the base pixel dimensions, while Percentage affects the render size relative to those dimensions. Lowering the scale can make it easier to create a small test, but check that the setting is appropriate for the intended output before delivery.

Another mistake is confusing Aspect X and Aspect Y with the image aspect ratio. The manual says these fields control pixel shape and can be used for non-square pixels on older televisions. Render Region and Crop to Render Region also do not do the same thing: the former limits the area being processed, while the latter determines whether the output is cropped to that area.

When preparing a single still image rather than an animation, resolution and framing take priority over frame rate. For an animation render, compare the frame rate with the delivery requirements. During the final check, also review the pixel aspect ratio, render region, and crop option, and make sure the low Percentage value used for the test render hasn’t been left in place for the final output.

Use in architecture and archviz workflows

Architecture, interior design, and archviz projects may require different framings or animation outputs from the same scene. Resolution and orientation settings help define the delivery format, while Percentage can be used to check the composition with a smaller render. Render Region is useful when only part of the image needs to be processed.

These options alone do not guarantee quality; the right choice depends on delivery requirements and the intended use of the scene. The source manual does not specify hardware requirements, version compatibility, or license costs. Rather than generalizing about these points, check the interface in the Blender version you’re using and the project’s delivery requirements.

Next steps

Before rendering, review the target dimensions, landscape or portrait orientation, pixel aspect ratio, and any render region cropping, in that order. If you’re preparing an animation, confirm that the required FPS value is set. A small test render is useful for evaluating composition; you should also check the final output settings separately.

Source and license

This guide has been adapted into Turkish using the “Format” page of the Blender Manual. The source is published under the CC BY-SA 4.0 license.