Reaction videos

Split screen or played after. One reaction across many videos, rendered in one go.

What reaction mode does

Reaction mode pairs one of your videos with a reaction clip and renders them as a single 1080×1920 reel, ready for YouTube Shorts, Instagram Reels, TikTok and LinkedIn. It sits beside the original clipping mode as a second tab in Bulk Scheduler's Short Maker, and both work from the same library. You pick the layout, pick which clips pair with which, and get one finished reel per pair — no timeline, no dragging, no export.

One reaction across many videos

Nearly every reaction tool edits one video at a time, which is fine for one reel and useless for twenty. Here the pairing is the feature. Put the same reaction on ten videos, spread five reactions across ten videos, or render every reaction against every video — and before any of it runs, the exact routing appears as a table showing which reaction lands on which video, with a shuffle button and a dropdown on every row if you want to change one. That table is what gets rendered. Nothing is decided after you press start, so the reel count on the button is the reel count you get, and the cost you were shown is the cost you pay.

Two layouts

Split screen

Reaction on top, the video below, each taking exactly half of the 1080×1920 frame. Both play at once. Neither half is letterboxed — each is scaled up and cropped to fill its pane.

Reaction at the end

The video plays in full, then the reaction after it, as one continuous reel. Nothing is cropped here, because each section is watched on its own.

Three ways to pair them

One reaction on everything

Pick a single reaction and ten videos, get ten reels. The usual case, and the cheapest.

One reaction per video

Several reactions spread across your videos, repeating if there are fewer reactions than videos. Shuffle them, or set any row by hand.

Every combination

Every reaction against every video. Five reactions and ten videos is fifty reels — the count is shown before you start, because this one multiplies.

When the reaction is shorter than the video

It usually is, and in split screen the reaction loops while the main video decides how long the reel runs. The alternatives are worse and worth naming: freezing the reaction on its last frame leaves half the screen motionless for most of the reel, and trimming the video down to match an eight-second reaction throws away the thing you wanted to post. Looping keeps both halves moving and the full video intact. In the reaction-at-the-end layout the question never comes up — the reel is simply as long as both clips together.

How to make one

Start to finish, about three minutes. No editor, nothing to install.

  1. Upload both clips to your library

    The video you want to react to and the reaction clip itself both go into your Bulk Scheduler library, the same place every other video lives. Either one can be landscape or portrait — they are fitted to the vertical frame for you.

  2. Open Short Maker and switch to the Reaction tab

    Short Maker has two tabs. Clipping cuts a long video into Shorts; Reaction pairs two videos together. Pick Reaction.

  3. Choose the layout

    Split screen puts the reaction on top and the video below, both playing at once. Reaction at the end plays the video in full and then the reaction after it. Pick whichever suits the clip.

  4. Pick the reaction clips, then the videos

    Choose one reaction to put the same one on everything, or several to spread them across your videos. Then select every video you want a reel made from. A clip used as a reaction cannot also be selected as a main video.

  5. Check the routing and press the button

    If you picked more than one reaction, a routing table shows which reaction lands on which video, with a shuffle button and a dropdown on each row. Choose whose audio plays, then press the button — it tells you exactly how many reels it will make and what they cost before it starts.

Questions about reaction videos

What is reaction mode in Bulk Scheduler?

Reaction mode pairs one of your videos with a reaction clip and renders them as a single vertical reel, ready to publish to YouTube Shorts, Instagram Reels, TikTok or LinkedIn. There are two layouts. Split screen puts the reaction on top and the video below, each taking exactly half of the 1080x1920 frame, both playing at the same time. Reaction at the end plays the video in full and then the reaction after it, as one continuous clip. The difference from a normal video editor is that it works on many videos at once: you choose which reaction lands on which video, see that routing as a table before anything runs, and get one finished reel per pair without editing any of them by hand.

Can I put the same reaction video on multiple videos at once?

Yes, and that is the case it was built for. Select one reaction clip and as many videos as you like, and you get one reel per video with the same reaction on each. There are two other pairing modes as well. One reaction per video spreads several reactions across your videos, repeating them if you have fewer reactions than videos, and you can either shuffle the assignment or set any individual pairing by hand from a dropdown. Every combination renders every reaction against every video, which multiplies: five reactions and ten videos produces fifty reels. Whichever mode you pick, the exact routing is shown as a table before you start, and that table is literally what gets rendered, so there is no gap between what you approved and what comes out.

What happens if the reaction clip is shorter than the video?

In split screen the reaction loops until the main video ends, and the main video decides the final length of the reel. This is deliberate. The two obvious alternatives are both worse: freezing the reaction on its last frame leaves half the screen showing a motionless face for most of the reel, and trimming the main video down to the reaction's length throws away the content you actually wanted to post, which matters when the reaction is eight seconds and the clip is sixty. Looping keeps both halves alive and keeps the full video intact. In the reaction-at-the-end layout the question does not arise, because the two clips play one after the other and the reel is simply as long as both of them together.

Whose audio plays when both videos are on screen?

You choose once, when you set the job up, and it applies to every reel in that batch. The options are the main video's audio only, which is the default and the safest because two people talking over each other is usually unwatchable; both mixed with the reaction sitting underneath the main audio, which is right when the reaction person is actually saying something; or the reaction's audio only, which suits a commentary track laid over footage. If one of the two clips has no audio track at all, the render falls back to whichever one does rather than failing. The setting is disabled for the reaction-at-the-end layout, because there the two parts play one after the other and each simply keeps its own sound.

How much does a reaction video cost to make?

One Short render per finished reel, taken from your plan's monthly render allowance, plus one AI credit per reel if you leave AI titles switched on. Ten videos with one reaction is ten renders. The same ten videos in every-combination mode with five reactions is fifty renders, because that mode multiplies, which is why the reel count and what it will consume are both shown on the button before anything starts. If a reel fails to render, its render and its AI credit are refunded automatically — you are never charged for output you did not get. Large batches are processed one reel at a time, so a big job costs you time rather than being rejected.

Do I need a video editor to make reaction videos?

No. Both clips come from your own library in Bulk Scheduler, the pairing is chosen on one screen, and the rendering happens on the server — nothing is uploaded to a timeline, dragged, or exported from a desktop editor. The finished reels land back in your library as ordinary videos, which means everything else in the product applies to them: AI titles and descriptions, the Virality Score, scheduling, and automatic publishing to YouTube, Instagram, LinkedIn and TikTok. You can also tick a box to have them scheduled as soon as they finish rendering, so a batch of reaction reels can go from two clips to a filled publishing queue without another screen.

One render per reel from your plan's allowance — seepricing and theper-action credit costs. Every finished reel can also be graded with theVirality Score before it goes out.

Last updated 2026-09-30