Media

Video Watermark Text

Add text watermark to videos with customizable position, font size, color, opacity, and timing

file· File resultOpen tool

Quick start

Call this tool from your code in three languages.

cURL

# 1) Upload each file first → returns { filePath }
curl -X POST 'https://api.elysiatools.com/upload/video-watermark-text' \
  -F 'file=@/path/to/videoFile.ext'

# 2) Call the tool with the returned filePath values
curl -X POST 'https://api.elysiatools.com/en/api/tools/video-watermark-text' \
  -F 'videoFile=/path/to/file.ext' \
  -F 'text=Watermark' \
  -F 'position=bottom-right' \
  -F 'fontSize=24' \
  -F 'fontColor=#FFFFFF' \
  -F 'opacity=0.7' \
  -F 'margin=20' \
  -F 'animationMode=static' \
  -F 'animationSpeed=50' \
  -F 'backgroundColor=#000000' \
  -F 'backgroundOpacity=0' \
  -F 'shadowOpacity=0.5' \
  -F 'startTime=0' \
  -F 'endTime=-1' \
  -F 'outputFormat=mp4'

API reference

Send a POST request with your inputs as JSON. File parameters require a separate upload first.

Endpoint

HTTP

POST https://api.elysiatools.com/en/api/tools/video-watermark-text

Parameters

Name	Type	Required	Description
videoFile	fileupload required	Yes	—
text	text	Yes	—
position	select	No	—
fontSize	range	No	Size of the watermark text (8-200 pixels)
fontColor	color	No	Color of the watermark text
opacity	range	No	Text opacity (0.1 = transparent, 1 = opaque)
margin	range	No	Distance from video edges (0-200 pixels)
animationMode	select	No	—
animationSpeed	range	No	Movement speed in pixels per second (10-500)
backgroundColor	color	No	Background box color behind text
backgroundOpacity	range	No	Background opacity (0 = no background, 1 = solid)
shadowOpacity	range	No	Text shadow opacity (0 = no shadow, 1 = solid shadow)
startTime	number	No	When to start showing the watermark (0 = from beginning)
endTime	number	No	When to stop showing the watermark (-1 = until end)
outputFormat	select	No	—

File-type parameters must be uploaded first via POST /upload/video-watermark-text, then the returned filePath is passed to the corresponding file field.

Response format

File result

JSON

{
  "filePath": "/public/processing/randomid.ext",
  "fileName": "output.ext",
  "contentType": "application/octet-stream",
  "size": 1024,
  "metadata": {
    "key": "value"
  },
  "error": "Error message (optional)",
  "message": "Notification message (optional)"
}

MCP integration

Add this tool to your Model Context Protocol server so AI agents can list and call it.

Server configuration

Add this block to your MCP client configuration:

mcp.json

{
  "mcpServers": {
    "elysiatools-video-watermark-text": {
      "name": "video-watermark-text",
      "description": "Add text watermark to videos with customizable position, font size, color, opacity, and timing",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=video-watermark-text",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

List available tools

After connecting to the SSE endpoint, list the exposed tools:

tools/list

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/list"
}

Call this tool

Invoke the tool by its id, passing arguments built from its parameters:

tools/call

{
  "jsonrpc": "2.0",
  "id": 2,
  "method": "tools/call",
  "params": {
    "name": "video-watermark-text",
    "arguments": {
  "videoFile": "https://example.com/file.ext",
  "text": "Watermark",
  "position": "bottom-right",
  "fontSize": 24,
  "fontColor": "#FFFFFF",
  "opacity": 0.7,
  "margin": 20,
  "animationMode": "static",
  "animationSpeed": 50,
  "backgroundColor": "#000000",
  "backgroundOpacity": 0,
  "shadowOpacity": 0.5,
  "startTime": 0,
  "endTime": -1,
  "outputFormat": "mp4"
}
  }
}

Chain multiple tools in one session with a comma-separated toolId list, e.g. /mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp (max 20).

File parameters accept a public file URL only (https://…). Local paths, data: URIs, and Base64 strings are not supported.

Questions or issues? Contact [email protected]