Pick the wrong video aspect ratio and your content shows up with ugly black bars, cropped heads, or text that’s cut off — instantly marking it as an afterthought. Get it right and the same footage feels native on every platform. This is a plain-English guide to which ratios to use where, written for Singapore marketers juggling Reels, TikTok, YouTube and feed posts.
What aspect ratio actually means
A video aspect ratio is simply the shape of the frame — its width compared to its height. The three you need to know are:
- 16:9 (landscape) — wider than it is tall. The classic “TV” and YouTube shape.
- 9:16 (vertical) — taller than it is wide. The full-screen phone shape used by Reels, TikTok and Stories.
- 1:1 (square) — equal width and height. A safe middle ground for some feeds.
You’ll occasionally meet 4:5 (vertical portrait), which is the tallest a post can be in the Instagram and Facebook feed without being cut. The numbers themselves just describe proportion, not pixels — a 9:16 video might be 1080 by 1920, but the shape is what determines how it sits on screen.
Which video aspect ratio for which platform
Here’s the practical cheat sheet for the platforms Singapore audiences actually use:
Vertical (9:16)
- Instagram Reels and Stories
- TikTok
- YouTube Shorts
- Facebook Reels and Stories
This is where most short-form attention lives now, so vertical is increasingly the default for social.
Landscape (16:9)
- YouTube (standard videos)
- Website headers and embeds
- Presentations and TV/event screens
Portrait (4:5) or square (1:1)
- Instagram and Facebook in-feed posts — 4:5 takes up the most vertical space without cropping, which usually means more attention.
- LinkedIn feed — square or 4:5 both perform well.
The trap of one-size-fits-all
The most common mistake is filming a 16:9 video and posting it everywhere. On a phone feed, that horizontal clip becomes a tiny letterboxed strip with wasted space above and below — easy to scroll past. Conversely, a vertical video forced onto YouTube’s player gets pillarboxed with black bars on the sides.
The fix isn’t to pick one ratio. It’s to plan for several from the start, which is why we always ask where a video will live before we shoot.
Film once, use everywhere
You don’t need a separate shoot per platform. With a bit of planning you can capture footage that adapts cleanly to multiple ratios.
- Frame loosely. Shoot with more space around your subject so you can crop to 9:16, 1:1 or 16:9 from the same take.
- Keep the action centred. If the important stuff sits in the middle, it survives any crop.
- Shoot vertical-first for social. When short-form is the priority, frame for 9:16 and derive the others.
- Leave safe zones. Keep titles and key visuals away from the very top and bottom, where platform buttons and captions sit.
This kind of multi-format planning is part of good video production — getting it right on the shoot saves painful reframing in the edit. From there, our social media team can cut platform-native versions from a single master.
Mind the safe zones and on-screen text
Picking the right shape is only half the job — where you place text and key visuals within that shape matters just as much. Every platform overlays its own buttons, captions and profile details on top of your video, and they sit in predictable places.
- Top and bottom edges get covered. On vertical feeds, the bottom holds the caption, username and action buttons, while the top can carry the platform’s own UI. Keep titles and logos out of those bands.
- Right side is busy too. On TikTok and Reels, the like, comment and share icons run up the right edge — don’t put readable text there.
- Centre is always safe. Keep your most important visual and any on-screen words in the middle third of the frame.
A quick habit that prevents reshoots: preview your draft inside the actual app before publishing, so you can see exactly what the interface hides.
A quick reference
When in doubt:
- Short-form social (Reels, TikTok, Shorts): 9:16 vertical.
- YouTube long-form, website, screens: 16:9 landscape.
- Feed posts (IG, FB, LinkedIn): 4:5 portrait or 1:1 square.
Get this right once and it becomes second nature — you’ll start framing every shoot with the final destinations already in mind, which is exactly how the pros avoid the black-bar problem.
Frequently asked questions
What is the best video aspect ratio for Instagram?
It depends on the format. For Reels and Stories, use 9:16 vertical to fill the screen. For in-feed posts, 4:5 portrait takes up the most space and tends to get more attention than square or landscape. Many brands post Reels in 9:16 and feed videos in 4:5.
Can I just crop a landscape video to vertical?
You can, and it’s a normal part of repurposing — but only if the footage was framed with room to spare. If the subject fills a tight 16:9 frame, cropping to 9:16 will cut off heads or important detail. That’s why we frame loosely when a video is destined for multiple ratios.
Does aspect ratio affect performance?
Indirectly, yes. A video that fills the screen and looks native to the platform holds attention better than one boxed in with black bars, and attention drives reach. Using the right ratio is one of the simplest ways to stop people scrolling past.
Want content that fits every feed? Tell us about your channels and we’ll plan a shoot that delivers every ratio you need.
