GET

/v1/schemas/fal/video/fal-ai/heygen/v2/translate/speed

Accept:

kind inputactivity videohash ab882397…extracted Jul 24, 2026version currentsource upstream spec ↗

field	recorded source
schema	Source linked above. Source trace `5a66ca02f30d0e78604e3cc2bb761ed9dbec941180167cc0789da203e38fa003` { "fetchedAt": 1784869285, "extractorVersion": "1", "verifiedAt": null }

Request body

9 properties · 2 required · 0 $defs

property	type	description	constraints
video_url*	string	URL of the video to translate. Maximum length is 8 minutes.
output_language*	enum	The target language to translate the video into	English \| Spanish \| French \| Hindi \| Italian \| German · +172 more
speaker_num	integer	Number of speakers in the video	nullable
enable_caption	boolean	Generate an SRT caption file alongside the translated video.	default: false
translate_audio_only	boolean	Translate only the audio, ignore the faces and only translate the voice track	nullable
srt_url	string	Optional URL of a custom SRT subtitle file.	nullable
srt_role	enum	Whether the custom SRT applies to the source or translated video.	input \| output · nullable
brand_glossary_id	string	HeyGen brand glossary ID for custom term translations.	nullable
enable_dynamic_duration	boolean	Enable dynamic duration to enhance conversational fluidity between languages with different speaking rates	nullable

Validate a payload

before you spend tokens

shell

$ curl -X POST https://modelschemas.com/v1/validate \
    -d '{"provider":"fal","endpointId":"fal-ai/heygen/v2/translate/speed","payload":{…}}'
→ {"valid": false, "errors": [{"path": "#", "keyword": "required", …}]}