Caching of Large MP4 Files for Playback

Hi All,

We are trying to cache large (~320MB) MP4 files that get requested from an S3 bucket. We have already set the Cache-Control to public, "max-age=31536000".

All JPG's that we set the cache to this are acting fine with this setting, but each time the MP4 is requested, the browser will request the download again, and buffer/download as the play head progresses in the timeline.

Is there something that I am missing that will make the video files play from local browser Cache, and not re-download the MP4 file each time?

These are my response headers:

"

Accept-Ranges: bytes

Cache-Control: public, max-age=31536000

Content-Length: 279422208

Content-Range: bytes 0-279422207/279422208

Content-Type: video/mp4

Date: Fri, 20 May 2022 19:36:27 GMT

ETag: "8179e6aa4fe*********************75724604407-17"

Last-Modified: Fri, 20 May 2022 19:28:03 GMT

Server: AmazonS3

x-amz-id-2: sdfsdfsdfsdfsdfsdfsdfsdfsdfsdf=

x-amz-request-id: sdfsdfsdfsdfsdfsdfsdfsdf

x-amz-server-side-encryption: AES256

x-amz-version-id: sdfsdfsdfsdfsdfsdfsdfsdf

"

Thank you in advance.