MediaInput

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/api-evangelist/postonce/main/json-schema/postonce-media-input-schema.json",
  "title": "MediaInput",
  "x-generated": "2026-10-14",
  "x-method": "derived",
  "x-generator": "derive-json-schema.py",
  "x-source": "openapi/_original/postonce-api-openapi.json#/components/schemas/MediaInput",
  "type": "object",
  "required": [
    "url"
  ],
  "properties": {
    "url": {
      "type": "string",
      "description": "Required absolute HTTP or HTTPS media URL. Surrounding whitespace is trimmed. Invalid URLs reject the entire request with invalid_media; URL contents are not fetched during validation."
    },
    "type": {
      "type": "string",
      "enum": [
        "image",
        "video"
      ]
    },
    "width": {
      "type": "integer"
    },
    "height": {
      "type": "integer"
    },
    "size": {
      "type": "integer"
    },
    "duration": {
      "type": "number",
      "description": "Video duration in seconds when known."
    },
    "thumbnail_url": {
      "type": "string",
      "description": "Cover image URL for video media (JPEG or PNG, 8 MB or less). It is applied as the video cover on Instagram Reels and Stories, Facebook Reels, and TikTok (inserted as the video's first frame), and is also used in scheduled and published post previews."
    }
  }
}