JUMP TOOverviewAuthenticationLimitsPostman CollectionsErrorsAvatarsList avatarsgetList Avatars V2getvoicesList voicesgetList Voices V2getVideoCreate an Avatar Video V2postRetrieve a VideogetRetrieve Video ListgetDelete a VideodeleteCreate a WebM videopost(deprecated) Create a videopost(deprecated) Add caption to the videopost(deprecated) Retrieve the caption videogettemplatesList Templates V2getGet Template V2getGenerate from Template V2post(deprecated) Generate from templatepost(deprecated) Retrieve a templategetvideo translateList supported languagesgetVideo TranslatepostVideo Translate statusgetSTREAMING APINew sessionpostStart sessionpostList sessionsgetSubmit ICE informationpostSend taskpostClose sessionpostInterrupt taskpostCreate session tokenpostStreaming avatar listgetUserGet remaining quota V2getAssetsUpload AssetpostWEBHOOKList webhook endpointsgetAdd a webhook endpointpostUpdate a webhook endpointpatchDelete a webhook endpointdeleteList available webhook eventsgetpersonalized videoAdd ContactpostGet Video DetailgetGet Project DetailgetAI CapabilitiesTalking PhotoList talking photosgetUpload talking photopostDelete a talking photo V2deletePowered by (deprecated) Add caption to the videopost https://api.heygen.com/v1/video/caption.generateThis endpoint only works with videos generated using the v1 API.Request Body FieldTypeDescriptionvideo_idstringA complete video id Response FieldTypeDescriptionvideo_idstring Note The add caption function only support text input video.