To upload a video to Amazon S3, we used the path-style URL like http://s3.amazonaws.com/bucket.

Unfortunately, it doesn’t work with Buckets located in Europe because Amazon only allows virtual hosted URL like http://bucket.s3.amazonaws.com as explained in their documentation.

To access Amazon S3 buckets and objects that were created using CreateBucketConfiguration, you must use the virtual hosted-style request.

We finally fixed this, so our upload is compatible with EU Buckets. This forum discussion is now closed.