What Are Open Captions?

Legendas abertas are text overlays permanently embedded into a video file, displaying dialogue and relevant audio information directly on screen without any option for viewers to turn them off. Unlike closed captions that viewers can toggle on or off, open captions are “burned in” or “hardcoded” into the video itself, making them visible on every device and platform regardless of whether the player supports captioning features.

How Open Captions Work

Open captions become part of your video’s visual layer during the export or rendering process. Think of it like printing text directly onto each frame of your video — once it’s there, it’s permanent.

The process typically involves three steps:

1. Transcrição — Creating an accurate text version of the spoken content, including timestamps that indicate when each phrase should appear
2. Styling — Choosing font, size, color, and positioning that ensures readability without obstructing important visuals
3. Rendering — Burning the captions into the video file itself, combining the text layer with the original footage

Because open captions are embedded in the video, the resulting file plays identically everywhere. There’s no separate caption file to upload, no player settings to configure, and no risk that a viewer’s device won’t support captions.

This permanence comes with a tradeoff: if you spot a typo or need to update your captions, you’ll need to re-export the entire video. That’s why starting with an accurate transcrição automática matters — fixing errors before burning in captions saves significant time.

Open Captions vs. Closed Captions

The fundamental difference between open and closed captions comes down to viewer control:

Legendas abertas:

• Always visible (burned-in)
• Require video re-export to edit
• Work on every platform
• Lower SEO benefits (text not indexable)
• No viewer customization (creator controls style)

Legendas ocultas:

• Viewer toggles on/off
• Caption file edits don’t require video re-export
• Require player support
• Higher SEO benefits (separate file indexed)
• Viewers can adjust size, color, and position

De acordo com accessibility experts, the choice between open and closed captions often depends on your platform and primary goal. Closed captions offer flexibility and meet WCAG accessibility guidelines more completely because viewers can customize them. Open captions guarantee visibility but remove viewer agency.

For accessibility compliance, closed captions are typically preferred because they allow users to adjust styling to their needs. However, open captions serve situations where closed caption support isn’t available or reliable.

Why Open Captions Matter

Open captions have become increasingly essential for three reasons:

Sound-Off Viewing Is Now Standard: Investigação shows that 69% dos consumidores watch video muted in public spaces. Social media platforms auto-play videos muted by default. If your captions don’t appear automatically, you’ve lost those viewers before they hear a word.

Universal Device Compatibility: Not every video player supports closed captions. Open captions eliminate this variable entirely — they work on any screen, any player, any platform. This matters for content displayed on digital signage, kiosks, trade show displays, or older playback systems.

Guaranteed Accessibility: While closed captions depend on proper implementation and player support, open captions ensure that deaf and hard-of-hearing viewers always have access to your content. This reliability is why many accessibility advocates support open caption screenings in movie theaters.

For video producers and marketers, according to Wistia’s State of Video Report, caption usage in marketing videos has increased 572% since 2021, driven largely by social media consumption patterns. Open captions have become the default for short-form content on platforms where closed caption support varies.

When to Use Open Captions

Open captions work best in specific situations:

Social Media Content: Instagram Reels, TikTok videos, and Facebook feed videos typically perform better with burned-in captions because they capture attention during auto-play and don’t require users to enable captions manually.

Public Displays: Digital signage, waiting room screens, trade show presentations, and kiosk videos need captions that appear automatically without user interaction.

Physical Media: DVDs and video files distributed without guaranteed player support benefit from embedded captions that work regardless of playback environment.

Platforms Without Caption Support: Some video hosting solutions and legacy systems don’t support closed caption files. Open captions ensure accessibility regardless of technical limitations.

For long-form content on platforms like YouTube or Vimeo — where closed caption support is robust and SEO matters — closed captions often make more sense. The captions remain editable, search engines can index the text, and viewers can customize their experience.

How to Create Open Captions

Creating open captions starts with an accurate transcript. You can transcribe manually (time-consuming for anything beyond a few minutes), use software de transcrição to generate time-coded text automatically, or convert existing transcripts into caption format.

Once you have timestamped captions, most video editing software can burn them into your footage:

1. Import your caption file (SRT or VTT format) into your editing timeline
2. Adjust font, size, color, and positioning for readability
3. Export the final video with captions rendered into the visual layer

Platforms like Sonix let you generate legendas automatizadas from your transcripts, style them to match your brand, and export in formats ready for burning into video. For multilingual content, you can translate your captions and create open caption versions in multiple languages.

Related Terms

• Legendas ocultas — Captions viewers can toggle on or off, stored as separate files
• SDH Subtitles — Subtitles for the deaf and hard of hearing, including non-speech audio descriptions
• SRT File — Common subtitle format used as the source for open captions
• Transcrição — Converting spoken audio to text, the foundation for all captioning
• Hardcoded Subtitles — Another term for open captions, emphasizing their permanent nature

Perguntas mais frequentes

Can I edit open captions after they’re added to my video?

No — once captions are burned into video, you’ll need to re-export the entire file to make changes. This is why accuracy matters before rendering. Start with reliable transcription and carefully proofread before committing captions to your final export.

Are open captions better for accessibility than closed captions?

Not necessarily. Federal accessibility guidelines generally prefer closed captions because they allow viewers to customize text size, color, and positioning to their needs. Open captions guarantee visibility but remove this customization. The best choice depends on your platform and audience.

Do open captions hurt my video’s SEO?

They can. Search engines can’t read text burned into video pixels, but they can index separate caption files. If discoverability matters, consider uploading both: open captions for social media engagement and closed caption files for platforms where SEO benefits apply.

Why do so many social media videos use open captions?

Social platforms auto-play videos muted, and most users scroll past content that doesn’t immediately communicate its value. Open captions capture attention during silent auto-play and don’t depend on users manually enabling closed captions — which many never do.

What’s the difference between open captions and subtitles?

Subtitles typically translate dialogue for viewers who understand the audio language but need text in another language. Captions include both dialogue and non-speech audio information (sound effects, music descriptions) for viewers who can’t hear the audio. Open captions are simply captions that can’t be turned off.