The Importance of Composition and Aspect Ratio in Video Production

The Importance of Composition and Aspect Ratio in Video Filming

When filming video, simply pressing the shutter won’t produce good results. You must first decide what to place in the frame and how to arrange it, as well as how to set the width-to-height ratio of that frame.

Composition is the process of deciding where to place your subject within the frame. It’s the same as pondering “where should I place the main character” in photography or painting. Video with good composition naturally guides the viewer’s gaze and allows them to focus on the screen without discomfort.

Aspect Ratio is the ratio between the width and height of the screen. In simple terms, it’s a numerical representation of how wide and how tall the screen is. For example, 16:9 means the width is 16 and the height is 9. Since this represents only the ratio and not the actual size of the screen, both 4K video and 1080p video can have a 16:9 aspect ratio.

Composition and aspect ratio are not merely technical settings. These two elements are storytelling tools that directly affect the sense of space, emotion, and focus that viewers experience when watching video.

Composition and Aspect Ratio in Video Filming Tutorial Usage

Understanding composition and aspect ratio conceptually and actually applying them in front of the camera are completely different. The fastest way to improve your skills is by using the grid function.

The grid is a guide line that divides the screen into thirds horizontally and vertically. When you place your subject at one of the four intersection points where these lines meet, a natural and balanced composition is created. This is called the Rule of Thirds.

For iPhone 17, turning on the grid function in the Camera app displays guide lines on the screen in real-time. The settings path is Settings → Camera → Grid ON. Filming in this state will help you develop a habit of naturally composing shots.

For aspect ratio settings, you must decide which platform you’ll upload the video to before filming. If it’s for YouTube, use 16:9; if it’s for Instagram Reels or TikTok, use 9:16 (portrait); if you want a cinematic feel, aim for 2.35:1.

Step-by-Step Setup Method for Composition and Aspect Ratio in Video Filming

By following the steps below in order, you can properly set up composition and aspect ratio before starting to film. Instructions are based on iPhone 17 or general smartphones and camera apps.

Workflow Tips for Composition and Aspect Ratio in Video Filming

Here are practical tips you can use immediately on the filming set. If you make these tips into filming habits, you’ll noticeably reduce editing time.

• ① Before filming, always decide whether you’ll hold the camera horizontally or vertically and start with that decision. Changing direction mid-shoot makes editing extremely complicated.
• ② Always film YouTube videos horizontally (16:9). If you film vertically, black bars will appear on both sides when uploaded, degrading the viewer experience.
• ③ When you want a cinematic feel, film in 16:9 and then crop to 2.35:1 in your editing software (like Premiere Pro). This way you can protect the original quality while achieving a widescreen aesthetic.
• ④ When filming person interview video, position the person’s eyes at the upper 1/3 point of the screen. If eyes are at screen center, there’s too much empty space below, which looks awkward.
• ⑤ The 4:3 aspect ratio can be intentionally used to create a retro or home video feel. However, you should know that on modern screens, pillar-shaped black margins appear on both sides before choosing this ratio.
• ⑥ Develop a habit of filming the same scene in 2-3 different compositions. The more options you have at the editing stage, the higher the final quality will be.

Cautions and Common Mistakes in Composition and Aspect Ratio for Video Filming

I’ve compiled the most common mistakes beginners make when setting up composition and aspect ratio. Use the items below as a checklist before filming.

Changing direction mid-shoot is also very common. If you switch from filming horizontally to vertically or vice versa, your two clips will have different aspect ratios during editing, making it very difficult to connect them. Fix your direction before starting to film and maintain it throughout.

The habit of always placing the subject in the dead center should also be avoided. Center placement isn’t always wrong, but in most cases the screen looks cramped and monotonous. You should practice consciously using the Rule of Thirds intersection points.

Filming without considering the upload platform is also a major problem. For example, if you film vertically (9:16) and upload to YouTube, black bars appear on both sides of the screen; if you film horizontally (16:9) and upload to TikTok, the top and bottom get cropped. You should determine your destination from the beginning and film in the appropriate aspect ratio.

The mistake of filming with a tilted horizon also frequently occurs. When shooting subjects with clear horizontal/vertical elements like the ocean or building exterior, if the camera is tilted even slightly, viewers instinctively feel uneasy. Develop a habit of aligning grid lines with horizontal/vertical elements.