Dubbed Audio, Subtitles or Transcripts? Videos for Students with Other Home Languages

Five ways to put a video into another language

Translated voice track

A synthetic voice speaks the student's home language in place of the original narration. No reading is required and the picture is unchanged.

Translated subtitles

Home-language text appears under the picture while the original audio plays. The student needs enough reading speed to keep up.

Same-language captions

Captions in the language of instruction, so students hear and read the same words at once. Useful for students building that language.

Translated transcript

The whole script as a document, readable before or after viewing at the student's own pace.

Bilingual transcript

The original and the translation side by side, useful for older students comparing vocabulary and sentence structure.

Matching the format to age and reading level

Age is a rough guide; reading ability in each language is the real variable. A ten-year-old who arrived last month may read fluently in Arabic and not yet in English, while a child born locally may speak Vietnamese at home but never have learned to read it.

• Early years and early readers: voice tracks. Subtitles do nothing for a child who cannot yet read in any language.
• Upper primary: a voice track for content-heavy science or history explainers, and same-language captions for lessons focused on building the language of instruction.
• Secondary students literate in their home language: translated subtitles, which keep the original voice audible so students still hear the language of instruction while following the content.
• Students who speak their home language but do not read it: a voice track, since a translated transcript will not help.
• Newcomers preparing for a lesson: a translated transcript the day before, so the video is not their first contact with new ideas.

Consider what the lesson assesses, too. If the goal is understanding photosynthesis, home-language access removes a barrier to the actual learning. If the goal is listening comprehension in the language of instruction, a dubbed version defeats the purpose, and same-language captions are the better scaffold.

A worked classroom scenario

The teacher in this example did not translate everything she owns. She picked one video that carries a core concept, made versions only for the students who needed them, and reused the outputs as print material.

Preparing a video for translation, step by step

1. Start with a video you made or are licensed to adapt. Teacher-made recordings are simplest; third-party videos may not permit modified versions.
2. Watch it for on-screen text. Labels, diagrams and slide text stay in the original language, so prepare a translated handout of the key labels.
3. List the five to ten key terms the lesson depends on, with their translations in each language you need.
4. Translate one short video first, and ask a fluent colleague, family liaison or community volunteer to check those key terms and the overall tone.
5. Decide per student which version they get, and arrange headphones so dubbed and original audio can play in the same room.
6. File the outputs by lesson and language so you can reuse them next year without redoing the work.

When translated videos help most

• Content subjects such as science, history and geography, where understanding the concept matters more than the language it arrives in.
• Newcomers in their first months, who can keep up with content while they build the language of instruction.
• Flipped lessons watched at home, where a home-language version lets parents follow along and help.
• Procedures students need to rewatch, such as lab safety steps or how to log into the learning platform.

Trade-offs and limits teachers should know

• Machine translation can miss subject vocabulary, or choose a word that is correct but unfamiliar to a child. There is no setting for reading level, which is why a fluent check matters.
• One synthetic voice reads the whole video, so a story with several characters sounds like one narrator.
• The dubbed MP4 replaces the original voice. Music and sound effects stay underneath, lowered while the new voice speaks, but any singing is removed along with the speech.
• There is no lip-sync. A teacher on camera will visibly be speaking a different language from the audio; mention this to students beforehand.
• On-screen text is not translated.
• If a student's home language is not among the supported languages, a translated video is not an option, and a bilingual adult explaining with a transcript in the language of instruction may be the fallback.
• Arabic output is Modern Standard Arabic, the variety used in formal education across the Arab world, but young children may be more used to their family's dialect. Chinese output uses Simplified characters, while families from Hong Kong or Taiwan typically read Traditional characters.

Producing classroom versions with mydubly

mydubly takes a video file from your device and, for one target language per job, returns a translated MP4 with a new AI voice, the translated audio on its own, SRT and VTT subtitles, and transcripts in both languages. It covers 21 languages, including Spanish, Arabic, Vietnamese, Chinese, Hindi, Portuguese, Russian, Turkish and Polish, and detects the spoken language automatically. Spanish offers Latin American and Spain voice accents and Portuguese offers Brazil and Portugal accents, so pick the one families will find familiar. The full list is on the video translator page.

There are eight stock voices, and a calm or narrator voice usually suits explainers. When you only need captions and transcripts, transcript mode costs 1 credit per minute instead of 50. The video itself stays on your device and only the audio is uploaded, which matters when students appear on camera. Subtitles come as separate files rather than being burned into the picture, so they can be switched on in the player or learning platform. For the general question of which format to choose, see subtitles vs dubbing.

Where to go next

Choose one video you will use next week and the student who would benefit most, then make a single translated version with the video translator and watch it with a fluent colleague before class. For explainer videos you plan to share more widely, read localizing educational videos. For communicating with families rather than students, see translating school videos for parents.