使用 AWS Javascript SDK 更新 AWS S3 视频/对象元数据

Question

My video files in S3 don't have any cache-control header and therefore my users have to reload/download videos on every refesh. I can manually update the cache-control metadata on the AWS website, but I need to do it programmatically on my node server.

Here is link to video landing page example. Here is screenshot of video with no cache-control.

The challenge is I can't simply set the headers when I create the signedUrl or upload the video, because my final video comes from AWS Elastic Transcoder. Users upload a.mov file on my front end to AWS, which starts an Elastic Transcoder job on the backend that converts it to.mp4. I can't find a way to set a cache-control on Elastic Transcoder outputs, so I'm assuming I need to use a separate function to update the object metadata once the transcoder job is done.

Also, I'm not 100% sure I even need to take this step, do I need to manually set cache-control?

Answer 1

Found a better solution, use AWS Cloudfront!