How to add subtitles to video
Adding subtitles is more than dragging a file into a timeline. You decide whether captions stay toggleable for accessibility or burn into pixels for places where people never turn sound on. You also decide how text sits next to logos, lower thirds, and vertical safe areas.
This guide walks through importing an SRT, setting sane defaults, previewing on a small screen, and exporting the right flavor for YouTube, a course LMS, or a client review. You will avoid the usual layout traps that make great transcripts look amateur on phones.
If you still need the SRT itself, generate it from your audio or video with our free upload tool, download, then import into Premiere, Resolve, DaVinci, or your platform. The converter handles the tedious draft; you handle design and placement.
If you work with a brand template, decide caption style once and reuse it. Font, size, background, and margin should not change randomly between episodes. Consistency signals professionalism more than fancy animation.
When you preview, watch once with sound and once muted. Muted preview catches missing context that audio hid. Sound preview catches timing issues that scanning text missed.
If you deliver to a client, send both the video and the SRT in one package with a short readme: language, frame rate, and known limitations. Small notes prevent big arguments.
If you use brand fonts in captions, test legibility on small screens before you approve.
If you localize, keep one timeline per language to reduce mistakes.
When clients ask for burned-in captions, confirm they cannot use soft captions for accessibility.
Generate SRT first, then import into your NLE or platform with style presets you can reuse.
Import is only the start. Style, safe area, and export mode decide whether captions help or hurt. Preview on a phone once; most viewers are not on your grading monitor.
If you burn in, confirm the client truly needs pixels instead of toggleable tracks for accessibility.
If you deliver to clients, include a short handoff note: language, frame rate, whether captions are soft or burned, and known limitations. Small context prevents big arguments.
When you test, export a short sample with captions before you render the full master. Errors are cheaper to fix early.
If you use brand fonts, test legibility at small sizes before you approve. Elegant type can fail on phones.
When clients ask for “open captions,” confirm they mean burned-in and understand the accessibility trade-offs.
Use our free tool to convert your audio into SRT subtitles in seconds.
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Step-by-step guide
Step 1: Start from an SRT you trust
Import the latest revision. If the file name ends in `_draft`, assume it is wrong. Confirm UTF-8 encoding so accents render correctly in the player.
Step 2: Import into captions, not only a text layer
Nonlinear editors expect captions in the caption track or equivalent. Plain text layers lose timing precision and are painful to edit later.
Step 3: Set style and safe margins
Pick a readable font size for mobile. Leave padding above lower thirds. If brand guidelines demand a box, test contrast on bright and dark scenes.
Step 4: Watch once at real time
Do not only scrub. Listening catches late cues and awkward line breaks scrubbing hides.
Step 5: Export the right mode for the destination
Sidecar SRT for accessibility and re-use. Burned-in for a single flattened deliverable. Choose consciously. Burn-in cannot be toggled off.
Step 6: Upload to the platform with correct language tags
YouTube and others use language metadata for search and accessibility. Tag accurately instead of dumping “English” on every track.
Step 7: Archive project and SRT together
Zip the timeline project or store in a versioned folder. Future edits should not start from a random export from email.
Use our free tool to convert your audio into SRT subtitles in seconds.
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Tips for better subtitles
- Two-line captions beat three on short social clips.
- If you localize, duplicate sequences or tracks per language.
- Use wired headphones when judging sync; Bluetooth adds latency.
- If captions collide with on-screen text, move style up or shorten lines.
- For TikTok or Reels, preview vertical safe zones. Web players differ.
- Teach clients the difference between soft and hard captions before they ask for “the MP4.”
Common mistakes
- Burning captions in too early You lose flexibility when the script changes after picture lock.
- Tiny fonts for 4K timelines viewed on phones What looks large on a monitor shrinks on mobile.
- Mixing caption languages in one file Separate files reduce confusion for platforms and viewers.
- Skipping a phone preview Most viewers are not on your grading monitor.
FAQ
Is the online converter free?
Yes for generating SRT from audio or video here.
Are files stored forever?
No. Download and keep your SRT.
Which upload formats work?
Common audio and video formats like MP4, MOV, MP3, WAV, and more.
How long does processing take?
Depends on file length and load.
Soft versus hard subtitles?
Soft can toggle. Hard are baked into pixels.
Conclusion
Adding subtitles is half technical import and half design judgment. Get timing right, then make text readable in the real environments people use. Keep soft files for accessibility, burn in only when the delivery calls for it.
Generate or refine your SRT, then import with confidence into the tool you already know.
Use our free tool to convert your audio into SRT subtitles in seconds.
No signup required.