Short answer
Before you start
- A vertical stream clip you own
- CapCut desktop or mobile
- a folder for source and exported files
- permission for music and memes
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Step by step
- 01
Start with a vertical source
Nicole Rojas · YouTube · 0:30 ↗Download or export a clip you are allowed to edit. Nicole's tutorial uses a vertical Twitch clip download and then works with the file inside CapCut. Keep the original untouched so you can return to it if the crop or audio goes wrong.
What you should see: The file opens with the camera and game framing you meant to keep, and the original remains available.
- 02
Create a project and import
Nicole Rojas · YouTube · 3:00 ↗Open CapCut, create a project, and import the clip. Check the canvas ratio before adding effects. For Reels and TikTok, confirm that the vertical canvas does not cut the face, the play, or the text that carries the moment.
What you should see: The timeline uses the intended format and the first preview has no surprise crop.
- 03
Cut the slow parts first
Nicole Rojas · YouTube · 4:01 ↗Play from the start, place the playhead at the beginning and end of each pause, use Split, and delete only the section that adds nothing. Leave enough context to understand who is speaking and what happened. Watch the full cut before adding zooms.
What you should see: The clip reaches the central moment quickly while the reaction still makes sense.
The timeline collects the moment's cuts before text and movement are added. YouTube · 3:51 ↗ - 04
Fix color and voice
Nicole Rojas · YouTube · 5:01 ↗Reposition the camera and game inside the canvas. Make small exposure and contrast changes, then use keyframes only when the focus needs to follow a reaction. Check the safe center so mobile UI does not cover the face or text.
What you should see: The reaction and action stay visible in the vertical format without distracting movement.
- 05
Generate and edit captions
Nicole Rojas · YouTube · 7:33 ↗Listen with headphones and lower the game when the person speaks. Use noise reduction only when it removes a specific sound. If you add music, lower it and check that it does not compete with the words or the alert you want to keep.
What you should see: Voice is clear, game audio adds context, and the loudest phrase does not clip.
Captions are generated first, then corrected against the original audio. YouTube · 8:21 ↗ - 06
Keep captions readable
CapCut automatic captions guide, reviewed September 6, 2026 ↗Open Auto captions, choose the spoken language, and generate the track. CapCut's current help reminds you that automatic recognition needs review. Correct names, slang, punctuation, and in and out timing, then play each change with sound.
What you should see: Every caption matches the spoken phrase and appears at the right time without covering the face or game information.
- 07
Add sound and movement with restraint
Nicole Rojas · YouTube · 13:10 ↗Choose a readable font, keep only a few words on screen, and place text inside the safe area. Add an effect, meme, or transition only when it clarifies the moment. Compare the version with the effect to the clean version and remove anything that steals attention.
What you should see: A viewer can read the text on a phone and every effect has a clear job.
Keyframes change position or scale between two specific points in the clip. YouTube · 15:51 ↗ - 08
Export and inspect the file
Nicole Rojas · YouTube · 17:15 ↗If a reaction needs focus, add a small keyframe and watch it at normal speed. Do not let the crop jump between cuts or cover captions. Keep a copy of the project before trying a faster version.
What you should see: Movement guides attention to the reaction without cutting information or making the clip hard to watch.
Export shows resolution, bitrate, codec, and format before saving. YouTube · 17:31 ↗ - 09
Publish with a repeatable note
Nicole Rojas · YouTube · 18:15 ↗Choose the project resolution and frame rate, name the export, and watch the file outside CapCut. Check the first caption, last frame, audio, crop, and phone volume. Write a short note about the clip's moment and keep the editable project.
What you should see: The export matches the preview, plays from start to finish on a phone, and the editable project remains saved.
If something does not work
- Captions mishear a phrase or arrive late
- Edit the caption text and timing in the caption track. Split a long line if it covers the screen and play the section with sound. Check names and game terms in a second pass.
- The vertical crop hides the reaction or text
- Return to the canvas ratio and reposition the clip before adding keyframes. Check the result on a phone, where platform controls and margins can cover more of the image than the desktop preview.
- The export sounds different or loses quality
- Compare voice, game, and music levels in the project. Play the exported file outside CapCut, check resolution and frame rate, and export again with the project settings if the file does not match the preview.
Test before you go live
- The vertical source is yours or licensed for editing
- Canvas ratio checked before effects
- Pauses removed without losing needed context
- Voice stays clear over game and music
- Captions, names, and timing reviewed with sound
- Framing checked on a phone
- Export opened outside CapCut and project saved
Cómo editar clips de stream para Reels y TikTok en CapCut
Watch the full tutorial ↗Common questions
Should I edit a native Twitch vertical clip?
It is a useful starting file when you have permission to edit it. Check the source and account rules before adding music, memes, or other people's material.
Are CapCut auto captions final?
No. CapCut's current help recommends reviewing text and timing after generation. Review matters for names, slang, accents, and phrases recorded over noise.
What ratio works for Reels and TikTok?
Start with a vertical canvas when the clip will be posted as a Reel or TikTok. Check the result on a phone and keep text inside the safe area for the platform you will use.
How many effects should I add?
Use effects that clarify the moment. If one competes with voice, captions, or the action, remove it. A small keyframe zoom is often enough to point to a reaction.
What should I check before publishing?
Watch the export on a phone and check caption timing, audio, crop, opening hook, and final frame. Open the file outside CapCut as well so an incomplete export is easy to catch.
