このエラーメッセージに関する原因と対処に関して説明します。
エラーメッセージ(英語)：
invalid image encoding
対処
関連リンク
AWS Rekognition JS SDK Invalid image encoding error - Stack Overflow
https://stackoverflow.com/questions/43599556/aws-rekognition-js-sdk-invalid-image-encoding-error
AWS Rekognition detect label Invalid image encoding error
https://stackoverflow.com/questions/51959646/aws-rekognition-detect-label-invalid-image-encoding-err・・・
Invalid image encoding when using serverless
https://stackoverflow.com/questions/50995238/invalid-image-encoding-when-using-serverless
AWS Rekognition JavaScript SDK using Bytes
https://stackoverflow.com/questions/43494736/aws-rekognition-javascript-sdk-using-bytes
AWS Rekognition PHP SDK gives invalid image encoding error
https://stackoverflow.com/questions/41166264/aws-rekognition-php-sdk-gives-invalid-image-encoding-er・・・
AWS Rekognition PHP SDK gives invalid image encoding error ...
https://stackoverflow.com/questions/41166264/aws-rekognition-php-sdk-gives-invalid-image-encoding-er・・・
AWS Developer Forums: Rekognition: invalid image encoding ...
https://forums.aws.amazon.com/thread.jspa?threadID=286407
reactjs - AWS Rekognition JS SDK無効な画像符号化誤差
https://stackoverrun.com/ja/q/11985372
バイトを使用したAWS認識Javascript SDK - Stack Overrun
https://stackoverrun.com/ja/q/11957564
java - BufferedImageをawsに変換します。rekognition.model.Image
https://stackoverrun.com/ja/q/11428490