💻 TechnologyGrade 6Lesson 20
← Back🔒 PDF with full access

Video Editing with Captions

Lesson preview: the Mini Lesson and Vocabulary are open to everyone. Guided practice, exercises, the parent checklist and the printable PDF worksheet come with full access (free 7-day trial or membership).

Learning Objectives

  • 1Identify the main edit operations on a video timeline
  • 2Match each edit operation to the purpose it serves
  • 3Sort editing tasks into Cut, Transition, Caption, and Audio
  • 4Add accurate captions that show the spoken words on screen
📘

Mini Lesson

A video editor is a stack of tracks lined up in time. The video track holds clips you can see, the audio track holds the sound, and the caption track holds the words on screen. Editing means trimming what is too long, joining clips smoothly, balancing the audio, and adding captions so every viewer can follow along.

The Four Jobs of an Editor

  1. Cut — remove parts that are unwanted, repeated, or off-topic.
  2. Transition — join two clips with a smooth crossfade or wipe instead of a hard jump.
  3. Caption — type the spoken words on screen so deaf or quiet viewers can follow.
  4. Audio — set the volume so music supports the voice without drowning it.

Common Edit Operations

  • Cut — slice a clip at the playhead and remove a section in one click.
  • Trim — shorten a clip by dragging its start or end inward.
  • Ripple delete — cut a section and slide everything after it back to fill the gap.
  • Crossfade — fade the end of one clip into the start of the next.
  • Caption — show the spoken words as text along the bottom of the frame.
  • Color grade — adjust brightness, contrast, and tint to set the mood.
  • Voice-over — record a narration track over the video.
  • Export — save the finished timeline as a single playable video file.

Why Captions Matter

  • Captions help deaf and hard-of-hearing viewers follow every word.
  • Captions help viewers in noisy places (or with the sound off) still understand.
  • Captions help viewers learning a new language read along while listening.
  • Captions must be accurate and timed — they appear when the speaker says the word, not before or after.
  • Captions stay on screen long enough to read, then disappear before they crowd the next line.
Video Timeline SchematicVideo Timeline — Tracks Stack in Time0:000:100:200:300:40VIDEOAUDIOCAPTIONSClip 1Clip 2Clip 3"Hello!""Watch...""Thanks for viewing"Stack video, audio, and captions on the same timeline.The playhead (red line) shows the current frame.
Video frame with captionVideo Frame — Caption at the BottomREC"Captions show what the speaker is saying."00:12 / 01:30HD 1080pCaptions help every viewer follow the spoken words.
💡

Tip: type captions while you watch the clip at half speed. It is much easier to match the timing of each word when the speaker is not racing past you.

Vocabulary
timeline
The strip in a video editor where clips, audio, and captions sit in time order.
clip
A single piece of video that you place on the timeline.
cut
A clean break that removes part of a clip in one click.
trim
To shorten a clip by dragging its start or end inward.
transition
A smooth visual link between two clips, like a crossfade or wipe.
caption
Text on screen that shows the words the speaker is saying.
export
To save the finished timeline as one playable video file.
Free · 7 days · No credit card

Unlock the full HSEA system for 7 days.

Add your first kid profile and your 7 days start: every lesson in every grade, saved progress for each child. Nothing to set up, no card required, nothing to cancel.

  • ✓ All 1,680 lessons, Grades 1–6, every subject
  • ✓ Profiles + saved progress for every kid
  • ✓ Printable lessons with answer key
Start your 7-day free trial →
← Lesson 19: Image Editing and Layout BasicsLesson 21: Charts and Data Storytelling →