How to Add Subtitles to a Video: Phone, PC and Online

Want to know how to add subtitles to a video without spending an evening typing? You have three good routes: an online AI tool, a desktop editor, or the platform you post on. This guide shows each one, step by step, on phone and PC.

What does it mean to add subtitles to a video?

Subtitles are the lines of text that show what people say on screen, timed to their speech. You can attach them in two ways, and the choice decides where your video will work.

Burned-in subtitles (also called open or hardcoded subtitles) are part of the picture itself. Nobody can switch them off, so they show up everywhere, even on apps with no caption support.

Soft subtitles sit in a separate file next to the video. The viewer can turn them on or off. The most common file is SRT, a plain text file that lists each line with a start and end time.

People often mix up captions and subtitles. In everyday use, captions also include sounds like [music] or [laughs], while subtitles carry only speech. For social media, most creators use the words interchangeably.

Type	Can viewers turn it off?	Best for	File you share
Burned-in (open)	No	Reels, Shorts, WhatsApp, ads	One MP4
Soft (closed)	Yes	YouTube long videos, courses, films	MP4 plus SRT
Transparent overlay	No, once placed	Pro editors who style in Premiere or DaVinci	A .mov caption layer

Which method should you pick?

Start from where the video will be watched. Then match the method to your device and your time.

• Use an online AI tool if you post short vertical videos and want styled, word-by-word captions fast.
• Use YouTube Studio if the video lives on YouTube and you want viewers to toggle subtitles or pick a language.
• Use a desktop editor if you already cut your video in one and want full control over every frame.
• Type an SRT by hand if the clip is under a minute, the audio is unclear, or no tool supports the language well.

How to add subtitles to a video online with an AI tool

This is the quickest route for most creators. An auto subtitle generator listens to the audio, writes the words and times each one to the voice. Your job is to check it and style it.

1. Upload the clip. Use the final cut, so the timing does not shift after you edit again.
2. Choose the spoken language. Pick what people actually say, not the language you want on screen.
3. Let the AI transcribe. It splits the speech into short, timed lines for you.
4. Proofread every line. Fix names, brand words, numbers and slang. Play it once at normal speed.
5. Style and position. Pick a font, colour and size that read well on a small screen. Keep text clear of faces and buttons.
6. Export. Download an MP4 with the text burned in, an SRT file, or both.

How do I add subtitles on my phone?

Most Indian creators shoot and post from a phone, so this matters. The simplest way is a web-based caption tool opened in your phone browser. You upload the clip, fix the words with your thumb, and download the finished MP4 to your gallery.

Social apps also have their own caption options. But these change often and can depend on your region, app version and spoken language. So check inside your app before relying on them, and test with a short clip first.

A few phone habits save time and mobile data:

• Upload on Wi-Fi if your clip is longer than a minute.
• Export at 1080p, which is enough for Reels and Shorts.
• Free up storage first, because the subtitled export is a new file.
• Preview with the sound off. That is how many people will watch it.

How to add subtitles on a Windows PC with Clipchamp

Clipchamp is Microsoft’s editing app, and it has a built-in autocaptions feature. These steps follow Microsoft’s official Clipchamp help page for the personal version.

1. Import your video. Open My media on the toolbar and browse your files, or bring it in from cloud storage.
2. Drag it to the timeline. The clip needs a voice track for captions to work.
3. Open captions. Click the captions icon in the preview, or go to the captions tab in the property panel.
4. Pick the language and transcribe. Choose the transcription language, decide whether to filter offensive words, then click transcribe media.
5. Fix the transcript. Double-click a word in the captions tab to correct it.
6. Style and export. Change font, colour and position in the Text tab, then export. You can also download the captions as an SRT file.

Microsoft says one transcript works in one language per video. So mixed Hindi and English speech may need extra cleanup. Check its language list before you start if you speak an Indian language.

How do I add subtitles to a YouTube video?

YouTube lets you add soft subtitles that viewers can switch on with the CC button. According to YouTube Help, the flow in YouTube Studio is:

1. Open Subtitles. Sign in to YouTube Studio and select Subtitles in the left menu.
2. Choose the video. Click it, then click Add language and pick the language.
3. Click Add under subtitles. You will see three options.
4. Upload, auto-sync or type. Upload a file with or without timing, paste a transcript for auto-sync, or type manually while the video plays.
5. Save or publish. Review the lines and save.

YouTube accepts SRT along with several other subtitle file formats. So the easiest path is often to make an SRT elsewhere, then upload it with timing.

How to add subtitles to a video with an SRT file

An SRT file has four parts per line: a number, a time range, the text, and a blank line. Times use hours, minutes, seconds and milliseconds, with a comma before the milliseconds.

You can type one in Notepad or any text editor and save it with the .srt extension in UTF-8. UTF-8 matters for Hindi, because other encodings can turn Devanagari into boxes or question marks.

Typing by hand works for short clips. For anything longer, an SRT generator writes the timings for you. Then you only correct the words.

Where SRT files work

YouTube, most desktop editors and most media players can read SRT. Instagram and WhatsApp do not use separate subtitle files in normal posts, so for those you need burned-in text.

Hindi, Hinglish and mixed speech: which script should you use?

This is where many tools trip up. Indian creators rarely speak one clean language. A sentence like “aaj ki recipe super easy hai” mixes Hindi grammar with English words.

• Devanagari Hindi suits audiences who read Hindi daily, news style content and older viewers.
• Hinglish means Hindi written in English letters. It suits young, urban audiences who text this way.
• English translation helps if you want viewers outside India or across states.

Pick one script per video and stay with it. Switching between Devanagari and Roman letters mid-video looks messy and slows reading.

How to add subtitles faster in GetNixa

GetNixa is one option built with Indian speech in mind. You upload the video in the web app or the Mac and Windows desktop app, then pick the spoken language from 30, including Hindi, Hinglish, Tamil, Telugu, Bengali and Marathi.

The AI writes captions timed to the voice. Then you click any word to fix it, pick a template, and change font, colours, position and animation. Hindi can come out in Devanagari or as Hinglish, and any language can be translated to English captions.

You can burn subtitles into the video as an MP4 for Instagram, Shorts or WhatsApp, or download an SRT on any plan. The Free plan has no watermark and covers videos up to 2 minutes. There is also a short guide on the subtitle tool page.

Common mistakes and how to fix them

Mistake	What happens	Fix
Captioning before the final edit	Text drifts out of sync	Lock the cut first, then caption
Too many words per line	Viewers cannot finish reading	Split into short lines of a few words
Text over the bottom UI	Buttons and captions overlap	Move text up to the middle third
Wrong file encoding	Hindi shows as boxes	Save the SRT as UTF-8
Skipping the proofread	Names and numbers come out wrong	Watch once with sound before export

If a soft subtitle file does not show up, check that it has the .srt extension and not .srt.txt. Windows sometimes hides the real extension, so turn on file extensions in File Explorer.

Quick checklist before you post

• Every word matches the audio, including names.
• Lines are short and break at natural pauses.
• Text has strong contrast with the background.
• Nothing covers faces, products or app buttons.
• You exported the right format for the platform.

Wrapping up

Subtitles make your videos easier to follow with the sound off, in noisy places and across languages. Choose burned-in text for social posts and an SRT for YouTube, then proofread once before you publish.

Frequently asked questions