1. To stream HLS video from S3 using CloudFront, create two S3 buckets - one for the HLS stream and one for thumbnails. 2. Configure crossdomain.xml files in both S3 buckets to allow cross-domain access. 3. Only create one CloudFront distribution to correspond to the HLS stream S3 bucket, otherwise videos will not play.

1. AWS CloudFront、S3 Streamming
主要是參考這兩篇
1. http://www.jwplayer.com/blog/encoding-hls-with-amazon-elastic-transcoder/
使用 Amazon Elastic Transcoder 轉 HLS
2. http://www.jwplayer.com/blog/delivering-hls-with-amazon-cloudfront/
Delivering HLS with Amazon CloudFront
有一些特別奇怪的設定
1. crossdomain.xml (照 COPY 就好 1 不用改)
<?xml version="1.0"?> <!DOCTYPE cross-domain-policy SYSTEM
"http://www.adobe.com/xml/dtds/cross-domain-policy.dtd">
<cross-domain-policy> <allow-access-from domain="*" />
</cross-domain-policy>
2. S3 要 create 兩個 buckets : HLS stream and a thumbnail
兩個 bucket 都要擺 crossdomain.xml
3. 注意一點：CloudFront 不能設兩個 dist. 去對應到同一個 bucket，不然影
片不能撥放
3. 其他資訊，其實也是亂看一下，好像也沒用到
http://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/Stream
ingDistributionS3Origin.html
http://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/Tutorial
StreamingAdobeFlash.html
http://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/private
-content-restricting-access-to-s3.html#private-content-creating-oai
http://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/private
-content-signed-urls-overview.html
http://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/CFPriva
teDistJavaDevelopment.html