Media

Batch Video Watermark

Add text watermark to multiple video files 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-batch-watermark' \
  -F 'file=@/path/to/videoFiles.ext'

# 2) Call the tool with the returned filePath values
curl -X POST 'https://api.elysiatools.com/en/api/tools/video-batch-watermark' \
  -F 'videoFiles=/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 'keepOriginalNames=true'

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-batch-watermark

Parameters

Name	Type	Required	Description
videoFiles	fileupload required	Yes	—
text	text	Yes	—
position	select	No	—
fontSize	range	No	Font size in pixels
fontColor	color	No	—
opacity	range	No	Text opacity (0.1 to 1.0)
margin	range	No	Distance from edge in pixels
animationMode	select	No	—
animationSpeed	range	No	Animation speed (pixels per second)
backgroundColor	color	No	—
backgroundOpacity	range	No	Background opacity (0 to 1.0)
shadowOpacity	range	No	Shadow opacity (0 to 1.0)
startTime	number	No	When to start showing watermark (0 = from beginning)
endTime	number	No	When to stop showing watermark (-1 = until end)
keepOriginalNames	checkbox	No	—

File-type parameters must be uploaded first via POST /upload/video-batch-watermark, 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-batch-watermark": {
      "name": "video-batch-watermark",
      "description": "Add text watermark to multiple video files with customizable position, font size, color, opacity, and timing",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=video-batch-watermark",
      "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-batch-watermark",
    "arguments": {
  "videoFiles": "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,
  "keepOriginalNames": true
}
  }
}

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]