How to Add English Subtitles to Any Video — Translate Any Foreign Video to English

How to Add English Subtitles to Any Foreign Video

Understand any video in the world. Get English subtitles in minutes — no software required.

You found a video. It's in Korean, Spanish, Arabic, or Japanese — and there are no English subtitles available. Maybe it's a YouTube channel you stumbled on, a TikTok that went viral in another country, or a drama episode that hasn't been officially translated yet.

You want to understand it. But the options are usually: wait for someone else to translate it, rely on YouTube's mediocre auto-captions, or skip it entirely.

Subly gives you a fourth option: AI-powered English subtitles in minutes, for any video, directly through Telegram.

Why YouTube Auto-Captions Aren't Enough

YouTube offers auto-translated captions for many languages, but the quality is inconsistent — especially for:

• Korean, Japanese, Chinese (non-Latin scripts, complex grammar)
• Arabic, Turkish, Persian (right-to-left, different sentence structure)
• Regional accents and dialects (standard models often fail here)
• Fast speech or overlapping dialogue (misses words, mistranscribes)
• Videos without speech-to-text data (uploaded files, unlisted content)

YouTube's auto-translate also can't add burned-in subtitles to a downloaded video, and it's unavailable entirely for Instagram, TikTok, and most short-form content.

Subly's AI translation pipeline is purpose-built for this problem: it transcribes the source audio, translates the result, and delivers a video file with clean English subtitles burned in — ready to watch, share, or keep.

What You Can Translate to English

Subly handles virtually any video source:

Supported source languages include Korean, Japanese, Chinese (Mandarin/Cantonese), Spanish, Arabic, Turkish, French, German, Hindi, Persian, Russian, Vietnamese, and dozens more. The source language is detected automatically — just paste the link or upload the file.

How to Add English Subtitles to Any Video — Step by Step

The entire process happens inside Telegram. No app downloads, no registration beyond your existing Telegram account.

Step 1: Open @subly1bot on Telegram

Step 2: Send the video URL (YouTube, TikTok, Instagram) or upload your video file directly

Step 3: When asked for target language, select English

Step 4: Wait 2–8 minutes (depending on video length)

Step 5: Download the translated video with English subtitles burned in

That's it. The output is a standard MP4 file with English subtitles embedded — you can watch it anywhere, share it, or keep it.

Popular Use Cases

Korean Dramas and K-Content

The global K-drama boom has millions of international fans watching shows that official translation teams can't keep up with. New episodes of currently-airing series often take days to receive English subtitles — Subly delivers them in minutes.

Popular shows translated by Subly users: My Mister, Crash Landing on You, Squid Game (behind-the-scenes content), variety shows like Running Man

Japanese Anime and Variety

Anime simulcasts have decent official subs, but Japanese variety shows, YouTube gaming channels, and interview content rarely get translated. Subly handles Japanese audio with high accuracy.

Spanish-Language Content

Latin American YouTube creators, Spanish news, and telenovelas have enormous audiences in the US and UK. Subly makes all of it accessible in English.

Arabic News and Commentary

Arabic-language news channels, political commentary, and interview content is underserved by English media. Subly gives you direct access to primary sources in English.

Turkish Drama (Dizi)

Turkish dramas have a dedicated global audience. Subly users regularly translate episodes for personal viewing and for sharing with friends who don't speak Turkish.

Chinese Social Media Content

Douyin (Chinese TikTok), Bilibili videos, and Chinese YouTube content have no English equivalent. Subly bridges the language gap for anyone following Chinese tech, lifestyle, or entertainment content.

Quality: What to Expect

Subly uses a two-step AI pipeline:

1. Transcription — OpenAI Whisper processes the audio to produce an accurate transcript in the original language
2. Translation — Google Gemini 2.0 Flash translates the transcript to natural English, preserving context and speaker intent

The result is significantly better than raw machine translation because the transcript is first validated for accuracy, then translated as coherent text rather than word-by-word.

For most content, the quality is suitable for understanding the full meaning. For very fast speech, heavy slang, or technical terminology, some errors may appear.

Free vs Pro: What's the Difference?

Free plan: - Videos up to 10 minutes - English subtitles included - Subly watermark on output video

Pro trial (24h free): - Unlimited video length - No watermark - Priority processing

Starter plan (250 Telegram Stars/month ≈ $3): - Unlimited translations - No watermark - Priority queue

For casual use — a few videos per week — the free plan is sufficient. Power users who translate multiple episodes regularly find the Starter plan saves time and delivers cleaner output.

Frequently Asked Questions

Does Subly work with videos that have no spoken dialogue? No — Subly requires speech audio to generate subtitles. Background music or text-only videos won't produce subtitles.

How long does it take? Typically 2–5 minutes for a 20-minute episode. Longer videos (40–50 min) may take 6–10 minutes.

Can I translate a video that's already in English but has poor audio? Yes — Subly's Whisper transcription can improve clarity by producing a clean text transcript, though the result will still be in English.

Are the subtitles burned in or as a separate file? By default, subtitles are burned into the video. SRT subtitle files are available for Pro users.

What happens if the source language isn't what I expected? Subly uses automatic language detection. If the wrong language is detected, you can specify the source language manually.

Get Started — It Takes 30 Seconds

Open @subly1bot on Telegram, paste any video URL or upload a file, and you'll have English subtitles within minutes.

No account needed beyond Telegram. No credit card. The first few translations are completely free.

Subly — any language, any video, English subtitles in minutes.