I would like to know, if is it possible to use multipart upload to S3 via a web browser (low-level API)?
If that is the case are there any demo web apps with source code or tutorials?
Thanks in advance
References
http://docs.amazonwebservices.com/AmazonS3/latest/dev/HLTrackProgressMPUJava.html
It certainly is possible, look at http://sente.cc/upload_to_s3.html for a working example which uploads directly to S3 from the browser.
Also see https://stackoverflow.com/a/6912340/217652