Edits / Instagram Reels / Long videos into Reels

How to Turn Long Videos into Instagram Reels

One podcast episode, tutorial or webinar holds 5 to 10 Reels. This guide shows how to find the moments, cut them clean, reframe 16:9 footage to vertical, add a hook and captions, and post them as a series - without the clips looking like reposts.

Find the moments Cut one idea per Reel Reframe to 9:16 Hook & captions Export to spec Post as a series
WHY

Why cut it, not post it whole

Instagram accepts Reels up to 20 minutes, but it only recommends Reels under 3 minutes to people who don't follow you. A 45-minute podcast posted as one Reel reaches your followers and stops there. The same episode cut into eight 30-second clips gets eight shots at the Reels tab, and each one can send viewers back to the full thing.

45:00
One long Reel
Followers only · 1 chance · low completion
Eight short Reels
Recommended to new viewers · 8 chances
A week of content
From one recording session
YIELD

How many Reels you'll get from each kind of video

Rough numbers from cutting a lot of footage. The limit isn't length, it's how many self-contained moments the video has.

Podcast / interview
6–10 per hour

Quotable answers, disagreements, stories. Stack two speakers or cut to whoever's talking. See podcast clips.

Tutorial / how-to
3–5 per 10 min

One step per Reel, result first. "Here's the finished thing, here's the step."

Vlog / day-in-the-life
2–4 per 10 min

Moments with a visual payoff - the reveal, the view, the reaction. Montage the rest.

Webinar / talk
5–8 per hour

Each slide's key point, the audience question, the one-line takeaway. Zoom into slides.

Product demo
3–6 per 10 min

One feature per Reel, 15-20 s, problem → feature → result. See product videos.

Live stream / Q&A
4–8 per hour

Best answers only. Trim the question to a text hook and keep just the answer.

01–06

The six-step method

Mark → cut → reframe → hook & caption → export → schedule. About 45 minutes for a one-hour video once you've done it twice.

1

Step 01

Find the moments

Don't start by cutting - start by marking. Play the video (or read its transcript at 2×) and drop a marker at every point that works for someone who hasn't seen the rest: a surprising claim, a clear tip, a before/after, a punchline, a question answered. Aim for 5-10 markers per hour of talk, 3-5 per 10-minute tutorial.

  • Listen for the lines you'd quote to a friend - those are the hooks
  • A moment must survive zero context; if it needs the setup, skip it or add a text hook later
  • Mark the end too: a Reel that stops on the payoff gets replayed
  • Need the transcript? Auto captions in Edits give you a searchable one - see auto captions
2

Step 02

Cut one idea per Reel

Import the full video into Edits and split at each marker, then trim each piece to 15-60 seconds. Cut the wind-up before the point ("so, um, one thing I always say is…") and the trail-off after it. One idea per clip; if a moment has two ideas, that's two Reels.

  • Start on the first word of the point, not the breath before it
  • Under 30 s for pure reach; 30-60 s when the idea needs a worked example
  • Save each cut as its own project so you can revise them separately
  • Keep everything under 3 minutes - longer clips aren't recommended to non-followers (length limits)
3

Step 03

Reframe 16:9 to 9:16

Landscape footage posted as-is shows as a thin strip with black bars - the fastest way to look like a repost. Crop the frame to vertical and use keyframes so the crop follows whoever is talking. Two speakers? Stack two crops, one above the other. Screen recordings or wide shots? Put the full clip over a blurred background with captions above and below.

  • Set the canvas to 9:16 first, then scale the clip up ~1.8× and position it
  • Keyframe position only at cuts and speaker changes - constant drifting looks seasick
  • For slides or screenshares, zoom into the part being discussed instead of showing the whole screen
  • Check faces land in the centre: the safe zone trims the top and bottom
Shortcut: if you can, record future long videos with the camera a little further back and centred. A 16:9 shot with the speaker in the middle third crops to 9:16 without any keyframing.
4

Step 04

Add a hook and captions

A clip pulled from minute 42 needs a reason to stop the scroll. Put a one-line text hook on the first two seconds - the claim, the question or the outcome - and turn on auto captions so it works with the sound off. Keep both inside the safe zone, hook high, captions mid-frame.

  • Hook formula: the result ("How I doubled…"), the mistake ("Stop doing this…") or the number ("3 rules for…") - more in Reel hooks
  • Captions word-by-word, big, two lines max - caption guide
  • Lower the original audio slightly and add a soft music bed from the library for pace
  • Trim any dead air the captions reveal; silence over 1 s is a scroll
5

Step 05

Export every clip to spec

Export each Reel at 1080 × 1920, H.264 MP4, 30 fps, 10-15 Mbps. From Edits that's the default and there's no watermark; from other tools, check for a logo or a 720p default. Batch-export all the clips at once and name them in order.

  • Match the source frame rate if it's 24 or 25 fps rather than forcing 30
  • Constant frame rate only - variable fps is the top cause of blurry Reels (fix blurry Reels)
  • Full settings walkthrough: Edits export settings
6

Step 06

Post them as a series

Space the clips out, one a day, and number them in the caption (Part 3/5) with the same cover style so they read as a set on your grid. Each one still has to stand alone, but the numbering lets a viewer who liked Part 3 go find Parts 1, 2, 4 and 5. Link the full video in your bio or a pinned comment.

  • Post at the time your followers are online - best time to post
  • Lead with the strongest clip, not Part 1; order the rest by strength
  • Watch which part wins in Reels analytics and cut the next video for more of that
  • Also share each one to your Story the same day so existing followers see it
AVOID

Six ways repurposed clips give themselves away

Viewers don't mind that a Reel came from a longer video. They mind when it looks like it did.

Giveaway 1

Black bars

A 16:9 strip in the middle of a 9:16 screen. Reframe (step 3) - crop, stack or blurred background - every time.

Giveaway 2

Starts mid-sentence

"…and that's why I think" is not a hook. Cut to the first full sentence of the point and put a text hook over it.

Giveaway 3

Burned-in logos and end screens

YouTube end cards, podcast lower-thirds and other platforms' watermarks. Crop them out or re-export from the source. Instagram also de-prioritises visible TikTok watermarks - see repurposing TikToks.

Giveaway 4

No captions

Long-form viewers had sound on. Reels viewers mostly don't. Auto captions are one tap. How to add them.

Giveaway 5

All five posted at once

Five Reels in one hour compete with each other. One a day, each at the best time, with the strongest first.

Giveaway 6

Soft, muddy video

A second generation of compression on top of the first. Export from the original file at 10-15 Mbps, never from a downloaded copy. Fix blurry Reels.

TOOL

Doing it in the Edits app

Instagram's free editor handles the whole workflow on your phone: import the full video, split at markers, reframe with keyframes, auto-caption and export every clip with no watermark.

Split & trim

Cut at every marker

Tap split on the timeline, trim each piece, and the pinch-zoom gets you to the exact frame. Trim & split tutorial.

Reframe

Keyframe the crop

Set the canvas to 9:16, scale the clip and add position keyframes where the speaker changes. Keyframes tutorial.

CC
Caption & export

Auto captions, clean export

One tap for captions, then export 1080p H.264 with no watermark. Captions · Export settings.

FAQ

Long video to Reels - quick answers

Never made a Reel from scratch? Start with how to make a Reel; sizes and limits are in the spec guide.

can i post a long video as one reel
Yes, up to 20 minutes - but only Reels under 3 minutes are recommended to non-followers. Cut it up for reach; post the long version for your existing audience if you like.
how many reels from one video
5-10 per hour of talking content; 3-5 from a 10-minute tutorial or vlog. See the yield table above.
how to make a horizontal video vertical
Crop 16:9 to 9:16 and keyframe the crop to follow the subject, stack two crops for two speakers, or place the full clip over a blurred background.
can i repost my youtube video as reels
Yes if it's yours. Remove end screens and logos, reframe to vertical, add a fresh hook and captions so it looks native.
which app cuts long videos into reels
Edits (free, by Instagram): import, split, keyframe reframing, auto captions, no-watermark export. Compare with CapCut or VN.
should i number the parts
Only if each part stands alone. "Part 3/5" helps viewers find the set, but a clip that only makes sense after Part 2 won't travel.
how do i link to the full video
Link in bio, a pinned comment, or a Story with the link sticker the same day. Captions can't hold clickable links.
what about the audio - music or voice
Keep the original voice as the main track and add a quiet library track under it for pace. Mark the audio as original so others can reuse it.
my clips look blurry after upload
Export from the original file, not a download, at 1080 × 1920 and 10-15 Mbps constant frame rate. Full checklist in fix blurry Reels.

One recording. A week of Reels.

Edits splits, reframes, captions and exports every clip - free, no watermark.