Aws-sdk-js: Bytes parameter in rekognition throws "Request has invalid image format" error

Created on 19 Oct 2018 · 5Comments · Source: aws/aws-sdk-js

Node version: v8.11.3
Npm version: 6.4.1
SDK version: 2.335.0

Bytes parameter not recognizing base64 encoded string "image/png;base64,Qk02EA..." and throwing error "InvalidImageFormatException: Request has invalid image format" when i try to make the request.
I also tried with:

Buffer
Blob
Typed Array

They all display the same error. Test case:

let params = {
   Image: {
     Bytes: 'BASE_64_STRING'
   },
};

rekognition.detectFaces(params, function(err, data) {
    if (err) {console.log(err, err.stack)}
    else console.log(JSON.stringify(data);
});

guidance

Source

jotalanusse

Most helpful comment

Can you give an example of how you are setting up the Bytes (or Buffer, Blob, Typed Array)?

This Buffer example should work for you:

const fs = require('fs');
const file = 'foo.jpeg';
const bitmap = fs.readFileSync(file);
const buffer = new Buffer.from(bitmap, 'base64')

let params = {
   Image: {
     Bytes: buffer
   },
};

Could you also try using uploading the same image to the Rekognition Console?

srchase on 19 Oct 2018

❤3 👍1

All 5 comments

Can you give an example of how you are setting up the Bytes (or Buffer, Blob, Typed Array)?

This Buffer example should work for you:

const fs = require('fs');
const file = 'foo.jpeg';
const bitmap = fs.readFileSync(file);
const buffer = new Buffer.from(bitmap, 'base64')

let params = {
   Image: {
     Bytes: buffer
   },
};

Could you also try using uploading the same image to the Rekognition Console?

srchase on 19 Oct 2018

❤3 👍1

I still get the same error, even with the example that you provided, full log:

{ InvalidImageFormatException: Request has invalid image format
    at Request.extractError (C:\Users\USERNAME\Documents\GitHub\Repositories\PROJECT\node_modules\aws-sdk\lib\protocol\json.js:48:27)
    at Request.callListeners (C:\Users\USERNAME\Documents\GitHub\Repositories\PROJECT\node_modules\aws-sdk\lib\sequential_executor.js:106:20)
    at Request.emit (C:\Users\USERNAME\Documents\GitHub\Repositories\PROJECT\node_modules\aws-sdk\lib\sequential_executor.js:78:10)
    at Request.emit (C:\Users\USERNAME\Documents\GitHub\Repositories\PROJECT\node_modules\aws-sdk\lib\request.js:683:14)
    at Request.transition (C:\Users\USERNAME\Documents\GitHub\Repositories\PROJECT\node_modules\aws-sdk\lib\request.js:22:10)
    at AcceptorStateMachine.runTo (C:\Users\USERNAME\Documents\GitHub\Repositories\PROJECT\node_modules\aws-sdk\lib\state_machine.js:14:12)
    at C:\Users\USERNAME\Documents\GitHub\Repositories\PROJECT\node_modules\aws-sdk\lib\state_machine.js:26:10
    at Request.<anonymous> (C:\Users\USERNAME\Documents\GitHub\Repositories\PROJECT\node_modules\aws-sdk\lib\request.js:38:9)
    at Request.<anonymous> (C:\Users\USERNAME\Documents\GitHub\Repositories\PROJECT\node_modules\aws-sdk\lib\request.js:685:12)
    at Request.callListeners (C:\Users\USERNAME\Documents\GitHub\Repositories\PROJECT\node_modules\aws-sdk\lib\sequential_executor.js:116:18)
  message: 'Request has invalid image format',
  code: 'InvalidImageFormatException',
  time: 2018-10-19T17:26:04.207Z,
  requestId: '0e14e09a-d3c4-11e8-a55d-XXXXXXXXXXXX',
  statusCode: 400,
  retryable: false,
  retryDelay: 53.60815455763171 }

jotalanusse on 19 Oct 2018

Does the image work when uploading it to the console?

srchase on 19 Oct 2018

No it doesn't work, i see the problem is the image, i just tried with another one and it works just fine. Thank you so much!

jotalanusse on 19 Oct 2018

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