github.com/prebid/prebid-server/v2@v2.18.0/endpoints/openrtb2/sample-requests/invalid-whole/video-empty.json (about)

     1  {
     2    "description": "Bid request's sole imp element has empty video field and does not define a Banner, Video nor Audio field",
     3    "mockBidRequest": {
     4      "id": "req-id",
     5      "imp": [
     6        {
     7          "id": "imp-id",
     8          "video": {}
     9        }
    10      ],
    11      "app": {
    12        "id": "app_001"
    13      }
    14    },
    15    "expectedReturnCode": 400,
    16    "expectedErrorMessage": "Invalid request: request.imp[0].video.mimes must contain at least one supported MIME type\n"
    17  }