Short Video Caption & Subtitle Design Guide#

Covers caption strategy — styling, placement, timing, accessibility, and engagement — for short video subtitles and on-screen text.

Target Users#

• Video editors
• Content creators
• Social media managers
• Accessibility-focused creators

When to Use#

• Designing subtitle style for a new video series
• Improving caption readability and engagement
• Making content accessible to hearing-impaired viewers
• Optimizing captions for sound-off viewing

Core Workflow#

1. Caption purpose definition
2. Typography selection (font, size, color, stroke/shadow, background)
3. Placement strategy
4. Timing and sync
5. Readability and accessibility checklist
6. Platform-specific caption best practices

Inputs#

• Video type
• Platform(s)
• Target audience
• Accessibility requirements
• Brand guidelines
• Video timeline

Expected Outputs#

• Caption style specification
• Placement and timing guide
• Accessibility checklist
• Platform-specific tips

Example Prompts#

• "Design a caption style for my Douyin cooking videos — needs to work for sound-off viewing."
• "Create an accessibility-friendly subtitle guide for educational short videos."
• "How should I style captions for a high-energy fashion reel vs. a calm meditation video?"

Trigger Keywords#

video captions, subtitle design, caption style, text overlay, accessibility captions, word-by-word captions

Usage Scenarios#

Scenario 1#

User Input: "Design captions for a fast-paced TikTok cooking video. I want word-by-word pop-up style with brand colors #FF6B35 and #004E64."

Expected Output: Caption style guide: font choice (bold sans-serif), animation (word-pop, 0.1s delay), safe-zone template (avoid lower-third where UI overlaps), and color-palette application with contrast compliance check.

Scenario 2#

User Input: "Audit this 45-second Reel captions. Are they readable? Are there any accessibility issues?"

Expected Output: Audit report: 3 instances of captions overlapping with on-screen text, 1 instance where contrast ratio is 2.3:1 (below 4.5:1 WCAG AA), captions too fast at 0:32 (145 WPM exceeds 120 WPM guideline).

Scenario 3#

User Input: "I'm posting the same video on TikTok, Reels, and YouTube Shorts. Adapt the caption placement for each platform's UI overlay zones."

Expected Output: Three caption-layout templates with platform-specific safe zones: TikTok (avoid right sidebar + bottom nav), Reels (avoid bottom-left caption field), Shorts (avoid bottom-right channel icon).

Scenario 4: 短视频字幕怎么做好看#

User input: "我在抖音和小红书做视频，每次加字幕都很丑。有什么简单的方法让字幕看起来专业？" Expected output: 短视频字幕设计指南——手机端（剪映App）：字体选"粗体拼音体"或"文艺体"（黑体/宋体不要用在视频里）；字号：主标题48-60号、副标题36-42号、正文24-30号；颜色：白色字体+黑色描边（描边宽度1.5-2）+半透明底色（60%不透明度黑色）；位置：居中偏下（离底部1/4位置），重要内容可以放大居中；特效：关键帧给个缩放或渐入（0.5秒内完成不要花哨）；一句话单独一行不超过12个字超过要断行。关键：好的字幕=白色描边+半透明底色+不超过两行。

Safety & Limitations#

Caption design guidance only. Does not auto-generate, transcribe, or render captions. Users are responsible for caption accuracy and translation quality.

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Generated for project short-video-skills-2026-04-27