veed/subtitles

VEED’s Subtitles API transforms raw footage into polished, publish-ready content with professional burned-in subtitles starting at a base rate of $0.10 per minute.

Inference

Commercial use

Partner

Schema

LLMs

Playground API Examples

About

Render

1. Calling the API#

Install the client#

The client provides a convenient way to interact with the model API.

npm install --save @fal-ai/client

Migrate to @fal-ai/client

The @fal-ai/serverless-client package has been deprecated in favor of @fal-ai/client. Please check the migration guide for more information.

Setup your API Key#

Set FAL_KEY as an environment variable in your runtime.

export FAL_KEY="YOUR_API_KEY"

Submit a request#

The client API handles the API submit protocol. It will handle the request status updates and return the result when the request is completed.

import { fal } from "@fal-ai/client";

const result = await fal.subscribe("veed/subtitles", {
  input: {
    video_url: "https://v3b.fal.media/files/b/0a967ce5/iARc_J0kLN9OEmiXnxT3l_substyle-example-input.mp4",
    preset: "glass"
  },
  logs: true,
  onQueueUpdate: (update) => {
    if (update.status === "IN_PROGRESS") {
      update.logs.map((log) => log.message).forEach(console.log);
    }
  },
});
console.log(result.data);
console.log(result.requestId);

2. Authentication#

The API uses an API Key for authentication. It is recommended you set the FAL_KEY environment variable in your runtime when possible.

API Key#

In case your app is running in an environment where you cannot set environment variables, you can set the API Key manually as a client configuration.

import { fal } from "@fal-ai/client";

fal.config({
  credentials: "YOUR_FAL_KEY"
});

Protect your API Key

When running code on the client-side (e.g. in a browser, mobile app or GUI applications), make sure to not expose your FAL_KEY. Instead, use a server-side proxy to make requests to the API. For more information, check out our server-side integration guide.

3. Queue#

Long-running requests

For long-running requests, such as training jobs or models with slower inference times, it is recommended to check the Queue status and rely on Webhooks instead of blocking while waiting for the result.

Submit a request#

The client API provides a convenient way to submit requests to the model.

import { fal } from "@fal-ai/client";

const { request_id } = await fal.queue.submit("veed/subtitles", {
  input: {
    video_url: "https://v3b.fal.media/files/b/0a967ce5/iARc_J0kLN9OEmiXnxT3l_substyle-example-input.mp4",
    preset: "glass"
  },
  webhookUrl: "https://optional.webhook.url/for/results",
});

Fetch request status#

You can fetch the status of a request to check if it is completed or still in progress.

import { fal } from "@fal-ai/client";

const status = await fal.queue.status("veed/subtitles", {
  requestId: "764cabcf-b745-4b3e-ae38-1200304cf45b",
  logs: true,
});

Get the result#

Once the request is completed, you can fetch the result. See the Output Schema for the expected result format.

import { fal } from "@fal-ai/client";

const result = await fal.queue.result("veed/subtitles", {
  requestId: "764cabcf-b745-4b3e-ae38-1200304cf45b"
});
console.log(result.data);
console.log(result.requestId);

4. Files#

Some attributes in the API accept file URLs as input. Whenever that's the case you can pass your own URL or a Base64 data URI.

Data URI (base64)#

You can pass a Base64 data URI as a file input. The API will handle the file decoding for you. Keep in mind that for large files, this alternative although convenient can impact the request performance.

Hosted files (URL)#

You can also pass your own URLs as long as they are publicly accessible. Be aware that some hosts might block cross-site requests, rate-limit, or consider the request as a bot.

Uploading files#

We provide a convenient file storage that allows you to upload files and use them in your requests. You can upload files using the client API and use the returned URL in your requests.

import { fal } from "@fal-ai/client";

const file = new File(["Hello, World!"], "hello.txt", { type: "text/plain" });
const url = await fal.storage.upload(file);

Auto uploads

The client will auto-upload the file for you if you pass a binary object (e.g. File, Data).

Read more about file handling in our file upload guide.

5. Schema#

Input#

video_url string* required

Upload or paste a URL to the video you want to subtitle.

preset PresetEnum* required

Each style defines fonts, colors, layout, and animation. Two tiers with different pricing:

Dynamic presets (2x multiplier): glass, whisper, glide2, fusion, glide, terminal, handwritten. Richer, context-aware rendering that adapts to the input.
Basic presets (1x multiplier): simple, plain, beans, corpo, boo, shadeplay, casper, capri, lowkey, vinta, diego, ali, slay, kitty, hustle, karl, sprout, flex, mint, rizz, vegas. Fixed, lightweight styling with predictable output.

Possible enum values: glass, whisper, glide2, fusion, glide, terminal, handwritten, simple, plain, beans, corpo, boo, shadeplay, casper, capri, lowkey, vinta, diego, ali, slay, kitty, hustle, karl, sprout, flex, mint, rizz, vegas

language Enum

Improves transcription accuracy, and should match the source audio (not output subtitles).

Possible enum values: af-ZA, am-ET, ar-AE, ar-BH, ar-DZ, ar-EG, ar-IL, ar-IQ, ar-JO, ar-KW, ar-LB, ar-MA, ar-OM, ar-PS, ar-QA, ar-SA, ar-TN, as-IN, ast-ES, az-AZ, ba, bas, be-BY, bg-BG, bn-BD, bn-IN, bo, br, bs-BA, ca-ES, ceb-PH, ckb-IQ, cs-CZ, cy-GB, da-DK, de-DE, dyu, el-GR, en-AU, en-GB, en-IN, en-NZ, en-US, eo, es-AR, es-BO, es-CL, es-CO, es-CR, es-DO, es-EC, es-ES, es-GT, es-HN, es-MX, es-NI, es-PA, es-PE, es-PR, es-PY, es-SV, es-US, es-UY, es-VE, et-EE, eu-ES, fa-IR, ff, fi-FI, fil-PH, fo, fr-CA, fr-FR, fy, ga, gd, gl-ES, gu-IN, ha-NG, haw, he-IL, hi-IN, hi-Latn-IN, hr-HR, hsb, ht, hu-HU, hy-AM, id-ID, ig, is-IS, it-IT, ja-JP, ja-Latn-JP, jv-ID, ka-GE, kab, kam-KE, kas, kea-CV, kk-KZ, km-KH, kn-IN, ko-KR, ku, ky-KG, la, lb-LU, lg, lij, ln-CD, lo-LA, lt-LT, luo-KE, lv-LV, mg, mi-NZ, mk-MK, ml-IN, mn-MN, mr-IN, ms-MY, mt-MT, my-MM, nb-NO, ne-NP, nl-NL, nn, nso-ZA, ny-MW, oc-FR, or, pa-IN, pl-PL, ps-AF, pt-BR, pt-PT, ro-RO, roh, ru-RU, rw-RW, sa, sah, sd-IN, si-LK, sk-SK, sl-SI, sm, sn-ZW, so-SO, sq-AL, sr-Latn-RS, sr-RS, srd, ss, su-ID, sv-SE, sw-KE, sw-TZ, ta-IN, ta-LK, ta-MY, ta-SG, te-IN, tg-TJ, th-TH, tk, tn, tok, ton, tr-TR, ts-ZA, tt, uk-UA, umb-AO, ur-IN, ur-PK, uz-UZ, vi-VN, vro, wo-SN, xh-ZA, yi, yo-NG, yue-Hant-HK, zh, zh-HK, zh-TW, zu-ZA

srt_file_url string

Upload or paste a URL to your .srt subtitles file. When provided, transcription is skipped.

srt_content string

Paste raw SRT subtitle text. Alternative to srt_file_url. When provided, transcription is skipped.

customization PresetCustomization

Optional preset overrides: vertical position, shadow intensity, and per-tier text styling (font, weight, hex colour) for each word-importance tier. Any omitted field keeps the preset's default.

{
  "video_url": "https://v3b.fal.media/files/b/0a967ce5/iARc_J0kLN9OEmiXnxT3l_substyle-example-input.mp4",
  "preset": "glass"
}

Output#

video File* required

Rendered video with styled subtitles

{
  "video": {
    "content_type": "video/mp4",
    "url": "https://v3b.fal.media/files/b/0a967f2e/uiCpSaEvJM9I5zXP_Jmef_substyle-example-output-compilation-v2.mp4"
  }
}

Other types#

File#

url string* required

The URL where the file can be downloaded from.

content_type string

The mime type of the file.

file_name string

The name of the file. It will be auto-generated if not provided.

file_size integer

The size of the file in bytes.

TextCustomization#

font string

Override the font used for this text tier. Must be a supported Google Font — see https://www.veed.io/api/v1/subtitle-renders/fonts for the canonical list. Unrecognized fonts are rejected with a 400.

weight integer

Font weight 100-900. Values >= 700 render as bold

color string

Override the text color for this tier.

PresetCustomization#

position Enum

Vertical placement of static subtitles on screen.

Possible enum values: top, center, bottom

shadow Enum

Improves readability over bright or busy backgrounds.

Possible enum values: none, min, mid, max

text_customizations TextCustomizations

Per-tier text styling for accessible / highlighted / viral words.

TextCustomizations#

accessible TextCustomization

Baseline styling applied to every word in the transcript. This is what a reader sees by default, before any per-word emphasis is applied.

highlighted TextCustomization

Mid-rank words (automatically marked as noteworthy: key nouns, action verbs, salient adjectives). Presets typically bump size or weight on these.

viral TextCustomization

Top-rank words (the strongest 'hook' moments). Only a handful per video. Not all presets use this tier; overrides are a no-op on presets without viral styling.

veed/subtitles

Table of contents

1. Calling the API

2. Authentication

3. Queue

4. Files

5. Schema

About

1. Calling the API#

Install the client#

Migrate to @fal-ai/client

Setup your API Key#

Submit a request#

2. Authentication#

API Key#

Protect your API Key

3. Queue#

Long-running requests

Submit a request#

Fetch request status#

Get the result#

4. Files#

Data URI (base64)#

Hosted files (URL)#

Uploading files#

Auto uploads

5. Schema#

Input#

Output#

Other types#

File#

TextCustomization#

PresetCustomization#

TextCustomizations#