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veed/subtitles

VEED Subtitles is a fast AI video subtitle generation model that adds styled captions to videos using automatic transcription or supplied SRT files and subtitle content. Ready-to-use REST inference API for subtitled MP4 generation, social media videos, creator content, marketing clips, accessibility workflows, video localization, and professional captioning with simple integration, no coldstarts, and affordable pricing.

Video Editing
Input
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Idle

$0.11per run·~90 / $10

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README

VEED Subtitles

VEED Subtitles adds styled subtitles to videos using automatic transcription or an optional SRT subtitle file. Choose subtitle presets, positions, shadow styles, languages, and output resolution tiers.

Why Choose This?

  • Automatic transcription
    Upload a video and automatically generate subtitles.

  • Optional SRT subtitles
    Upload an SRT file or provide raw SRT content when exact subtitle text and timing are required.

  • Multiple subtitle styles
    Choose from standard and dynamic subtitle presets.

  • Position and shadow controls
    Adjust subtitle placement and shadow strength for better readability.

  • Multiple resolution tiers
    Generate subtitled videos in 480p, 720p, or 1080p.

Parameters

ParameterRequiredDescription
videoYesInput video.
target_resolutionNoOutput resolution tier: 480p, 720p, or 1080p. Default: 720p.
presetNoSubtitle visual preset. Default: simple. Standard and dynamic presets are supported. Dynamic presets use a higher pricing tier.
positionNoSubtitle position: top, center, or bottom. Default: bottom.
shadowNoText shadow strength: none, min, mid, or max. Default: mid.
languageNoOptional transcription language locale, such as en-US or zh-CN. Leave empty to automatically detect the language.
fileNoOptional SRT subtitle file. Do not use together with srt_content.
srt_contentNoOptional raw SRT subtitle content. Do not use together with file.

How to Use

  1. Upload a video — Select the video you want to subtitle.
  2. Choose a resolution — Select 480p, 720p, or 1080p.
  3. Choose a preset — Select a standard or dynamic subtitle style.
  4. Set position and shadow — Adjust subtitle placement and readability if needed.
  5. Choose a language optional — Select a transcription language or leave it empty for automatic detection.
  6. Provide subtitles optional — Upload an SRT file or enter raw srt_content.
  7. Submit — Generate and download the subtitled video.

Pricing

Pricing depends on input video duration, selected resolution, and whether the selected subtitle preset is standard or dynamic.

Billing Rules

  • Base price: $0.11 per input-video minute
  • Minimum billed duration: 60 seconds
  • Maximum processed and billed duration: 120 seconds
  • Duration is rounded up to the next whole second
  • 480p and 720p use the base resolution multiplier
  • 1080p uses a 2× resolution multiplier
  • Dynamic presets use an additional 2× preset multiplier
  • Resolution and dynamic-preset multipliers are cumulative
  • position, shadow, language, file, and srt_content do not affect pricing

Example Costs

Billed Duration480p / 720p Standard480p / 720p Dynamic1080p Standard1080p Dynamic
60 seconds$0.11$0.22$0.22$0.44
90 seconds$0.165$0.33$0.33$0.66
120 seconds$0.22$0.44$0.44$0.88

Best Use Cases

  • Social media videos — Add styled captions to reels, shorts, and promotional clips.
  • Interviews and talking-head videos — Improve accessibility and viewer retention.
  • Branded content — Choose subtitle presets that match the visual tone of your content.
  • Multilingual content — Select a supported transcription language when automatic detection is not preferred.
  • SRT workflows — Burn existing subtitle files or raw SRT content into a video.

Pro Tips

  • Leave language empty when you want automatic language detection.
  • Use either file or srt_content, not both.
  • Use a standard preset for lower-cost subtitle generation.
  • Dynamic presets provide more animated styling but cost twice as much as standard presets.
  • Selecting 1080p doubles the resolution price.
  • Combining 1080p with a dynamic preset results in a 4× total multiplier.
  • Videos longer than 120 seconds are processed only up to the first 120 seconds.

Notes

  • video is required.
  • target_resolution defaults to 720p.
  • preset defaults to simple.
  • position defaults to bottom.
  • shadow defaults to mid.
  • The maximum processed video duration is 120 seconds.
  • Uploading both file and srt_content in the same request is not supported.
Note:This website uses AI models provided by third parties. Documentation prices are for reference and may be outdated. The Generate button shows an estimate; the final task charge prevails.

Subtitles API — Quick start

Grab a WaveSpeedAI API key, then call POST https://api.wavespeed.ai/api/v3/veed/subtitles with your input as JSON. The endpoint returns a prediction id. Start polling the result endpoint around every 2 seconds, increase the interval for long-running tasks, and stop on any terminal status. On completed, read output values from data.outputs. Examples for Subtitles below.

HTTP example
set -euo pipefail

: "${WAVESPEED_API_KEY:?Set WAVESPEED_API_KEY}"

REQUEST_BODY=$(cat <<'JSON'
{
    "video": "https://interactive-examples.mdn.mozilla.net/media/cc0-videos/flower.mp4",
    "target_resolution": "720p",
    "preset": "simple",
    "position": "bottom",
    "shadow": "mid",
    "language": "af-ZA"
}
JSON
)

# 1. Submit the prediction.
SUBMIT_RESPONSE=$(curl --silent --show-error --fail-with-body \
  -X POST "https://api.wavespeed.ai/api/v3/veed/subtitles" \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $WAVESPEED_API_KEY" \
  -d "$REQUEST_BODY")

TASK=$(printf '%s' "$SUBMIT_RESPONSE" | jq 'if has("data") then .data else . end')
PREDICTION_ID=$(printf '%s' "$TASK" | jq -r '.id')
if [ -z "$PREDICTION_ID" ] || [ "$PREDICTION_ID" = "null" ]; then
  printf 'Submission response did not contain a prediction id
' >&2
  exit 1
fi
RESULT_URL="https://api.wavespeed.ai/api/v3/predictions/$PREDICTION_ID/result"

# 2. Poll until the prediction finishes.
while true; do
  RESPONSE=$(curl --silent --show-error --fail-with-body "$RESULT_URL" \
    -H "Authorization: Bearer $WAVESPEED_API_KEY")
  RESULT=$(printf '%s' "$RESPONSE" | jq 'if has("data") then .data else . end')
  STATUS=$(printf '%s' "$RESULT" | jq -r '.status')
  case "$STATUS" in
    completed) printf '%s\n' "$RESULT" | jq '.outputs'; break ;;
    failed|cancelled|timeout|deleted) printf '%s\n' "$RESULT" | jq . >&2; exit 1 ;;
    *) sleep 2 ;;
  esac
done
Node.js example
const submitUrl = "https://api.wavespeed.ai/api/v3/veed/subtitles";
const apiKey = process.env.WAVESPEED_API_KEY;
if (!apiKey) throw new Error('Set WAVESPEED_API_KEY');

async function requestJson(url, options = {}) {
  const response = await fetch(url, options);
  if (!response.ok) throw new Error(await response.text());
  return response.json();
}

// 1. Submit the prediction.
const body = await requestJson(submitUrl, {
  method: "POST",
  headers: {
    "Authorization": `Bearer ${apiKey}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
        "video": "https://interactive-examples.mdn.mozilla.net/media/cc0-videos/flower.mp4",
        "target_resolution": "720p",
        "preset": "simple",
        "position": "bottom",
        "shadow": "mid",
        "language": "af-ZA"
}),
});
const task = body.data ?? body;
if (!task.id) throw new Error("Submission response did not contain a prediction id");
const resultUrl = `https://api.wavespeed.ai/api/v3/predictions/${task.id}/result`;

// 2. Poll until the prediction finishes.
while (true) {
  const resultBody = await requestJson(resultUrl, {
    headers: { "Authorization": `Bearer ${apiKey}` },
  });
  const result = resultBody.data ?? resultBody;
  if (result.status === "completed") {
    console.log(result.outputs);
    break;
  }
  if (["failed", "cancelled", "timeout", "deleted"].includes(result.status)) throw new Error(JSON.stringify(result));
  await new Promise(resolve => setTimeout(resolve, 2000));
}
Python example
import json
import os
import time
from urllib.request import Request, urlopen

api_key = os.environ["WAVESPEED_API_KEY"]
headers = {"Authorization": f"Bearer {api_key}", "Content-Type": "application/json"}
payload = {
    "video": "https://interactive-examples.mdn.mozilla.net/media/cc0-videos/flower.mp4",
    "target_resolution": "720p",
    "preset": "simple",
    "position": "bottom",
    "shadow": "mid",
    "language": "af-ZA"
}

def request_json(url, data=None):
    request = Request(url, data=data, headers=headers, method="POST" if data else "GET")
    with urlopen(request) as response:
        return json.load(response)

# 1. Submit the prediction.
body = request_json("https://api.wavespeed.ai/api/v3/veed/subtitles", json.dumps(payload).encode())
task = body.get("data", body)
if not task.get("id"):
    raise RuntimeError("Submission response did not contain a prediction id")
result_url = f"https://api.wavespeed.ai/api/v3/predictions/{task['id']}/result"

# 2. Poll until the prediction finishes.
while True:
    result_body = request_json(result_url)
    result = result_body.get("data", result_body)
    status = result.get("status")
    if status == "completed":
        print(result.get("outputs", []))
        break
    if status in {"failed", "cancelled", "timeout", "deleted"}:
        raise RuntimeError(result)
    time.sleep(2)

Subtitles API — Frequently asked questions

What is the Subtitles API?

Subtitles is a Veed model for video editing, exposed as a REST API on WaveSpeedAI. VEED Subtitles is a fast AI video subtitle generation model that adds styled captions to videos using automatic transcription or supplied SRT files and subtitle content. Ready-to-use REST inference API for subtitled MP4 generation, social media videos, creator content, marketing clips, accessibility workflows, video localization, and professional captioning with simple integration, no coldstarts, and affordable pricing. You can call it programmatically or try it from the playground above.

How do I call the Subtitles API?

POST your input parameters to the model's REST endpoint (shown in the API tab of this playground) with your WaveSpeedAI API key in the Authorization header. Submission returns a prediction ID. Poll the result endpoint starting around every 2 seconds, increase the interval for long-running tasks, and stop on any terminal status. The playground generates Python, JavaScript, and cURL examples for submitting requests and polling results. Full request/response shape is documented at https://wavespeed.ai/docs/docs-api/veed/veed-subtitles.

How much does Subtitles cost per run?

Subtitles starts at $0.11 per run. That figure is the base price — the final charge scales with the parameters you set in the form (output size, length, count, references, or whatever knobs this model exposes), so a higher-quality or larger output costs more than a minimal one. The exact cost for your current input is shown live next to the Generate button before you submit, and the actual per-call charge is recorded on the prediction afterwards.

What inputs does Subtitles accept?

Key inputs: `video`, `file`, `language`, `position`, `preset`, `shadow`. The full JSON schema (types, defaults, allowed values) is rendered above the Generate button and mirrored in the API reference at https://wavespeed.ai/docs/docs-api/veed/veed-subtitles.

How long does Subtitles take to generate?

Reported generation time on WaveSpeedAI is around 45 seconds per request. This is an estimate, not a latency guarantee; queue time and input settings can change the total wait. live status is visible in the prediction record.

Can I use Subtitles outputs commercially?

Commercial usage rights depend on the model's license, set by its provider (Veed). Check the provider's applicable terms and WaveSpeedAI's Terms of Service before commercial use.

llms.txt — veed/subtitles for AI agents and LLMs