Add Subtitles To Video
The Add Subtitles To Video block takes a video URL as input and burns styled subtitles directly into the video.
Automatically add styled subtitles to any video
The Add Subtitles To Video block takes a video URL as input and burns styled subtitles directly into the video. It handles transcription and subtitle generation automatically, giving you control over how the text appears visually without requiring any external subtitle files or manual timing work.
The block exposes a wide range of styling parameters. You can specify the subtitle language using an ISO language code, choose any Google Font by name, and set font size, weight (normal, bold, or black), and color from a fixed palette of thirteen options. Additional styling controls include highlight color, stroke width and color, background color with adjustable opacity, and vertical position (top, center, or bottom) with a pixel-level y-offset. You can also configure how many words appear per subtitle segment — from single-word display up to full sentences — and toggle a bounce-style entrance animation on or off.
This block fits into video production and content automation workflows where subtitles need to be added at scale or without manual editing. It works well downstream of video generation or upload steps, and the output can be stored as an intermediate asset or surfaced directly in a gallery, depending on the intermediateAsset flag.
What you can build
Real-world workflows powered by the Add Subtitles To Video block.
Social Media Video Captioning
Automatically add subtitles to short-form videos before publishing, ensuring content is accessible and viewable without sound on platforms like Instagram or TikTok.
Multilingual Subtitle Generation
Use the ISO language parameter to generate subtitles in a specific target language, enabling localized video content for different regional audiences.
AI Video Pipeline Post-Processing
Place this block after an AI video generation step to automatically caption the output before delivering the final asset to users or a storage destination.
Branded Training Content
Apply consistent font, color, and position settings across a batch of training or onboarding videos to maintain a uniform visual style throughout a course.
Accessibility Compliance Workflows
Add subtitles to recorded meetings, webinars, or product demos to meet accessibility requirements for hearing-impaired viewers.
Podcast Video Repurposing
Convert audio-heavy podcast recordings into subtitle-overlaid video clips suitable for sharing on video platforms, using word-per-subtitle controls to match pacing.
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Get Started FreeCommon questions about Add Subtitles To Video
What are the required parameters for this block?
The only required input is videoUrl, which is the URL of the video to be processed. All other parameters — such as language, font settings, colors, position, and animation — have defaults or are optional styling controls.
What does the block return as output?
The block's output metadata does not specify explicit named output fields. The processed video with burned-in subtitles is stored to a destination variable defined by the internal destinationVar field. If intermediateAsset is set to true, the asset is created but hidden from the gallery.
How many words can appear per subtitle segment?
The wordsPerSubtitle parameter controls this. It defaults to 3, but can be set to 1 for single-word display, 2–3 for short phrases, or 8–12 for full sentences, depending on the pacing you need.
What font and color options are available?
Font name accepts any Google Font name as a string. Font color, highlight color, stroke color, and background color each accept a fixed set of values: white, black, red, green, blue, yellow, orange, purple, pink, brown, gray, cyan, and magenta. Background color also accepts 'none' for a transparent background.
What kinds of workflows commonly use this block?
This block is typically used in video production pipelines where subtitles need to be added automatically at scale — for example, after AI video generation, as part of a content localization workflow, or when repurposing recorded audio or video content for social media distribution.
Related capabilities
Merge Videos
Merge one or more clips into a single video.
Merge Audio
Merge one or more clips into a single audio file.
Mix Audio into Video
Mix an audio track into a video
Trim Media
Trim an audio or video clip
Extract Audio from Video
Extract audio MP3 from a video file
Mute Video
Mute a video file
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