To stream video through Amazon CloudFront, store your video or packaged stream at an origin such as Amazon S3, create a CloudFront distribution for that origin, and play the CloudFront URL. For adaptive streaming, encode the video into a manifest and media segments first: CloudFront delivers the files but does not encode or package a source video. Amazon Web Services (AWS) states that an encoder must package video content before CloudFront can distribute it.
Choose the right CloudFront video workflow
Start by deciding whether viewers will choose an on-demand video or watch a live broadcast. The origin, encoding process, and playback URL depend on that choice.
| Use case | What happens before CloudFront | Typical origin |
|---|---|---|
| Video on demand (VOD) | Upload a source video. To support adaptive streaming, encode it into a manifest and media segments, optionally at multiple resolutions and bitrates. | Amazon S3 is AWS’s straightforward VOD example. |
| Live streaming | An encoder compresses and formats the live input; a packaging or origin service prepares outputs for delivery. | AWS describes MediaStore or MediaPackage as possible origins after encoding with MediaLive. |
AWS lists MPEG-DASH, HLS, Smooth Streaming, and CMAF as common streaming formats. Choose based on your target players, devices, and packaging workflow; the AWS materials cited here do not establish one format as best for every audience. AWS defines VOD as content stored on a server that viewers can watch at any time.
Set up VOD from S3 through CloudFront
1. Choose a format and prepare the video
For basic playback, the AWS S3 tutorial demonstrates delivering a video file through CloudFront. For adaptive bitrate playback, use an encoder such as AWS Elemental MediaConvert to create a manifest and referenced media segments. You can create multiple resolution-and-bitrate versions so a compatible player can adjust viewing quality to available bandwidth. Upload the resulting output files to S3 while preserving the paths the manifest references.
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A single MP4 served through CloudFront is a video file, not an adaptive bitrate package. If your intended player expects HLS or DASH, provide the corresponding manifest and segments and test the manifest URL in that player.
2. Create a bucket and upload your files
- In the Amazon S3 console, create a bucket in a Region that suits your expected users, cost considerations, and regulatory requirements.
- Upload either the video file for basic delivery or the complete packaged output, including manifests and segments, for adaptive streaming.
3. Create a CloudFront distribution with S3 as the origin
In the CloudFront console, create a distribution and select the S3 bucket as its origin. Follow AWS’s current S3-origin setup instructions and restrict direct access to the bucket so viewers retrieve objects through CloudFront. Use Origin Access Control (OAC) for an S3 origin encrypted with SSE-KMS: AWS notes that Origin Access Identity (OAI) does not support SSE-KMS. Do not treat OAI as the universal current choice.
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4. Set the delivery behavior and HTTPS
Configure a cache behavior whose path pattern matches your video files or packaged output, and use HTTPS for viewer delivery. Keep the object paths and behavior patterns aligned with the files your player requests. Some packaging workflows need distinct behaviors for manifests and segments; AWS’s MediaPackage-specific patterns are not a template for a simple S3 bucket unless your paths and requirements actually match.
5. Test playback using the CloudFront URL
After the distribution is available, test an object through a URL shaped like https://<distribution-domain>/<path-to-video>. For a packaged stream, give the player the manifest URL; the player should then request the referenced segments. Verify the response and playback with the actual player and client devices you intend to support.
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6. Add a custom domain only if you need one
AWS’s tutorial describes using Route 53 for DNS and custom-domain setup. Domain registration, hosted zones, and DNS queries can incur fees. The total depends on your configuration and usage, so calculate it for your deployment rather than assuming a fixed setup cost.
Use a separate architecture for live streaming
CloudFront can deliver live video, but it does not turn a camera or live input into a stream by itself. AWS describes a workflow in which MediaLive encodes and formats the live output, then MediaStore serves as an origin or MediaPackage converts the output into delivery formats. Configure CloudFront to use the chosen origin.
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For MediaPackage endpoints, AWS provides format-specific cache behavior examples matching manifest and segment extensions. The examples redirect viewer HTTP requests to HTTPS and forward only query strings needed by endpoint features. For Low-Latency HLS (LL-HLS), AWS names _HLS_msn and _HLS_part. AWS also recommends header-based CDN authorization between MediaPackage endpoints and CloudFront. These settings are specific to MediaPackage; confirm the requirements of your chosen origin and endpoint rather than applying them to every CloudFront setup.
Keep private video private
Restrict access to the origin
Origin protection prevents viewers from bypassing CloudFront to fetch objects directly from S3. Configure the applicable CloudFront origin access mechanism and bucket permissions. For SSE-KMS-encrypted S3 origins, use OAC rather than OAI.
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Authorize viewers separately
For private playback, configure signed URLs or signed cookies on the viewer-facing cache behavior. A trusted key group lets CloudFront verify signed URLs. Your application remains responsible for deciding whether someone is entitled to watch and issuing the signed URL or cookie.
A canned signed URL policy supports expiration. A custom policy can also specify a not-before time or an IP range. If a request uses query parameters, include them in the signature; AWS warns that otherwise the request can return HTTP 403. Be careful when enabling trusted signers on an existing behavior: viewers whose requests match that path must then use signed URLs. Enable that requirement only when your application is ready to issue them.
Troubleshoot common setup problems
- The source video plays, but there is no adaptive quality switching: A single file does not provide an adaptive bitrate package. Encode multiple renditions and create the appropriate manifest and segments, then test them with a compatible player.
- The manifest loads but playback fails: Check that every segment path referenced by the manifest exists in S3 and that the CloudFront behavior matches those object paths. Test through the intended player, not only by opening the manifest URL.
- CloudFront returns an access error for S3 content: Check the bucket policy and CloudFront origin access configuration. If the bucket uses SSE-KMS, confirm OAC is configured; OAI does not support that encryption case.
- Private playback returns HTTP 403: Confirm the viewer is authorized, the signed URL or cookie is valid for the behavior, and any query parameters are covered by the URL signature.
- Existing viewers lose access after enabling signed URLs: Trusted signers make signed URLs necessary for requests matching that behavior. Restore access by having the application issue valid signed URLs or by revisiting the behavior’s access configuration.
- A MediaPackage live stream does not behave as expected: Verify manifest and segment path patterns, the required endpoint query strings, HTTPS redirection, and the endpoint’s CDN authorization configuration. Do not assume MediaPackage-specific behavior settings apply to another origin.
Plan costs around your actual delivery
There is no defensible single CloudFront video-streaming total without assumptions about region, stored and transcoded volume, requests, and viewer data transfer. Include encoding and storage as well as delivery when estimating a VOD workflow. If you add a Route 53 domain, account separately for domain registration, hosted-zone, and DNS-query fees.
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