Hi @YasuhiroSekiguchi,

1. As far as I know, MPEG-Dash is not uploaded to the S3.
2. HLS can be uploaded to the S3 on the FLY.
   In the advanced application settings, please locate hlsHttpEndpoint and set it as instructed here: https://antmedia.io/docs/guides/recording-live-streams/hls-recording/#record-hls-files-to-the-s3-bucket

e.g., If you are making the changes in the live application, the property can be set like:
"hlsHttpEndpoint": "http://localhost:5080/live/hls-upload" and it will start uploading the HLS files to the S3 bucket on FLY.

You can check the HLS recording document for more information.

Thank you.