Azure media service:Generate thumbnail with video encode

Question

I am using azure media service to generate encode,trim video. Now i want to generate video thumbnail with custom encoding preset. Here what i used to encode video and generate thumbnail:

{
"Version": "1.0",
  "Sources": [
    {
      "StartTime": "00:00:00",
      "Duration": "00:01:00"
    }
  ],
  "Codecs": [
    {
      "Type": "CopyVideo"
    },
    {
      "Type": "CopyAudio"
    },
    {
      "PngLayers": [
        {
          "Type": "PngLayer",
          "Width": 150,
          "Height": 150
        }
      ],
      "Start": "{Best}",
      "Type": "PngImage"
    }
  ],
  "Outputs": [
    {
      "FileName": "e3cb10a2-1580-49f7-ad29-99c44f5bc936_{Width}x{Height}_{VideoBitrate}.mp4",
      "Format": {
        "Type": "MP4Format"
      }
    },
    {
      "FileName": "{Basename}_{Index}{Extension}",
      "Format": {
        "Type": "PngFormat"
      }
    }
  ]
}

while i am trying to encode video and generate thumbnail, getting this error:

The preset results in multiple outputs with same name. Either use unique file names or use macros to disambiguate!

Above code is work perfect if i remove thumbnail configuration and doing just video encoding.

Can any one suggest is it possible to generate thumbnail with copyaudio and copyvideo codecs?

Answer 1

It's mandatory for Thumbnail generation to use the macro {Index} in the filename output. That shall solve the issue. Regards,