Ask what it eliminates, not what it has
Almost every social media video editor advertises the same handful of features: AI captions, one-click resizing and a template library. Comparing tools by that list doesn’t tell you much, because it’s really the baseline for these tools and the marketing copy tends to look identical from one product to the next.
A better question to ask when building your software stack: what part of today’s workflow does this tool eliminate? Does it get you from raw footage to a decent first cut without manual work on everything, or does it just give you faster tools to do the same manual work you were already doing? That question separates tools a lot more clearly than a feature list does.
Six things that matter most
When you’re picking an editing tool, there are six features and capabilities that make the biggest difference for your end result.
- Speed to a first cut. Look at whether you can trim, rearrange and clean up a clip with minimal manual work, not just whether the interface looks modern. AI with the capability to automatically remove silences and filler words makes a big difference for speed at this stage.
- Caption quality. This goes beyond just “has captions.” Nearly every editor can make AI captions now. What varies is accuracy, whether you can correct them easily, word-by-word timing, styling and whether you can save a caption style once and reuse it on future videos. Captions are part of the visual design for social video, not an afterthought, so make sure they’re treated as such.
- Reframing that keeps the subject in frame. Supporting 9:16, 1:1 and 16:9 is also an almost universal feature at this point. Pay attention to the quality: whether reframing keeps a face or a product in frame, either by tracking the subject during the crop or by extending the frame so nothing gets cut, or whether it just chops the sides off a static center crop and hopes for the best.
- AI that removes tedium. You want to offload manual labor, not every single decision about your video. Useful AI tools find clips in long footage, remove pauses, generate a transcript, clean up audio and suggest B-roll options. Less useful features: a single button that claims to make your whole finished video, AI avatars you don’t need or a huge library of automated effects that don’t bring anything new.
- Manual control when the AI gets something wrong. A tool that automates well but makes it difficult to correct small items, like moving a caption or trimming two extra seconds off a clip, is a tool you’ll eventually stop using, no matter how good the automation features are. This is easy to overlook while comparing tools on a feature checklist, since it only starts causing challenges once something needs fixing after the fact, not during a demo.
- An interface that matches how you work. Look for mobile-first if most editing happens on a phone. Prioritize web or team-based if collaboration, asset management and brand controls matter more. Professional desktop software is best if your work is complex and highly polished. The market has split strongly along these three lines, rather than providing one tool that serves each of these users equally well. Make sure you know where you fit.
One editor, several exports
You generally don’t need separate software for every social platform. What you often need is a different version of the same video, not a different tool.
Instagram Reels, TikTok, YouTube Shorts and Facebook Reels all share the same 9:16 vertical format, so the same edit will often work across all four without creating a separate cut. YouTube’s main feed and some LinkedIn placements run 16:9, and certain LinkedIn and Instagram feed placements are built for 1:1 or 4:5, and that’s where a separate export becomes important.
Rather than a separate tool for every platform, use one editing tool that creates a master video with several exports. And even though a number of platforms share the same aspect ratio, that doesn’t mean the content should be identical everywhere. A hook that works on TikTok might land differently on Instagram, and Facebook Reels is a whole different audience. Captions need to be in the right place, clear of whatever UI element a given platform overlays on its videos. A CTA like “follow for more” doesn’t translate directly to “subscribe,” so you’re likely landing on different endings for each platform. The goal usually isn’t one video that works everywhere but one source edit that efficiently produces the versions you need, with each platform’s watermark or interface quirks accounted for before you hit publish.
Building this into one workflow
Runway Agent can handle reframing and refinement in the same place it handles AI video generation or editing uploaded videos. It can resize a video to 16:9 for YouTube, 9:16 for Reels, TikTok and Stories, 1:1 for square posts, 4:3, 3:4 or 21:9 for ultrawide cinematic framing, and with some image models 3:2 and 2:3 for stills. So producing a 9:16 cut and a 16:9 cut from the same source doesn’t mean exporting into separate software for each one.
When a new aspect ratio needs more frame than the footage has, Runway works differently from a crop. The AI video editor uses Aleph 2.0 to extend the footage, generating the surrounding area so the subject stays in frame and the new ratio gets filled in. It works on filmed footage as well as footage generated from a prompt.
The deeper mechanics of turning one edit into platform-specific versions, including adjusting aspect ratio, adding captions and changing structure, are covered in more depth in our guide to editing videos for social media. If you’re ready to compare specific products against the criteria above, look at our guides to the best vertical video editor, the best short-form video editor and the best social media video maker for deep dives into different tools.
Frequently asked questions
What features matter most in social media video editing software?
Speed to a first cut, accurate and reusable captions, reframing that keeps the subject in frame rather than a static crop and manual control when AI gets something wrong are the key features to look at. Most other features, especially large template libraries, matter less than they seem like they should on a spec sheet.
Can one tool handle every social platform?
Usually, yes. Most platforms share only a couple of aspect ratios, so one editor that can produce a few exports from a single master edit covers nearly every part of the workflow without separate software for each platform.
What’s the difference between essential and nice-to-have AI features?
Essential AI features remove tedious manual work: finding clips in long footage, removing pauses, generating captions and cleaning up audio. These tasks take a long time by hand but are easy to automate and don’t require much human judgment. Nice-to-have AI features are flashier and less load-bearing: effects, huge template libraries and one-click “make my whole video” claims.
How much should you be able to manually correct an AI edit?
As much as you need to, and without a fight. If nudging the position of a caption, changing a word or adjusting a clip’s start point takes more effort than the AI feature saved you in the first place, you’ll end up just reverting to doing the entire edit yourself.
Related resources: How to edit videos for social media · Best vertical video editor · Best short-form video editor · Best social media video maker
