For online courses, the reliable unit of work is one lesson at a time: clean the source audio, lock recurring terms in a glossary, dub to one target language, and review the bilingual subtitles before publishing. TransCast accepts local videos up to one hour and exports a dubbed MP4 plus bilingual SRT. It does not batch-import a course.
A lesson-by-lesson localization workflow
Start with a representative lesson rather than an entire catalog. It should contain the instructor’s normal delivery, recurring terminology, slides, and at least one difficult passage. Use that first result to establish review rules before translating more modules.
Each TransCast project accepts one local MP4, MOV, WebM, or MKV file up to 500 MB and one hour. Each dubbing job has one target language.
Build one course glossary first
List course names, instructor names, frameworks, acronyms, formulas, and words that should remain untranslated. For every entry, define the source term, exact subtitle display, and spoken pronunciation.
The glossary should be reviewed for the current target language rather than copied blindly between markets. The technical tutorial glossary guide includes a practical structure.
Keep narration aligned with the lesson
Translated speech needs to arrive near the slide, cursor movement, demonstration, or diagram it explains. TransCast processes timed transcript segments and adjusts generated speech toward their original windows, but an instructor or fluent reviewer should still watch the complete lesson.
Screen-heavy lessons share the same risks as product walkthroughs. Use the screen recording localization checklist for interface labels and click timing.
Choose how students receive subtitles
Every completed job includes a bilingual SRT with the translated line followed by the source line. Keep it separate when the course platform supports captions. Burn it into the MP4 when the player cannot load an SRT or when both languages must always be visible.
Course quality checklist
- The instructor has authorized use of the source and voice.
- The source lesson has clear speech and limited overlap.
- A single glossary is applied consistently across modules.
- The reviewer checks meaning, timing, pronunciation, and on-screen references.
- The final SRT is tested in the destination player.
- Regional vocabulary and units match the audience.
Plan credits before localizing a catalog
TransCast bills 0.5 credit for each started 30 seconds. Multiply the rounded credit requirement by the number of target-language jobs, then include human review time in the project budget. The AI dubbing cost guide shows the exact formula.