Media uploaded through the CMAF VOD workflow can now be transcoded automatically into a complete rendition ladder. You no longer need to create custom renditions separately for each audio and video rendition.

New Features

CMAF VOD offers the following new transcoding capabilities:

• Automatic rendition creation: Each upload uses a transcoding config to generate its rendition ladder automatically.

• Default transcoding config: Every site receives a default config based on the standard Traditional VOD template. It creates:

  • AVC video renditions at 1080p, 720p, 540p, 480p, 360p, and 270p, capped at 60 fps
  • AAC-LC stereo audio up to 192 kbps
  • An AAC-LC or E-AC3 5.1 surround track up to 512 kbps when the source contains multichannel audio
• Source-aware transcoding: JWX preserves the source frame rate, including fractional frame rates, and maintains the orientation of vertical video. Sources are never upscaled. For example, a 720p source produces renditions at 720p and below.
• Custom transcoding configs: Work with your JWX account team to create a custom config. You can set it as the site default for all uploads or apply it to an individual media item by providing its config ID when creating the media through Management API v2. If no config is assigned to the media item, JWX uses the site default.
• Manual rendition creation: Your account team can create an empty config that bypasses automatic rendition creation. You can then create each rendition through the custom rendition endpoints.
• Rendition edits after automatic creation: A transcoding config does not lock the rendition ladder. After JWX creates the renditions, you can delete an existing rendition or use the custom audio and video rendition endpoints to add individual renditions alongside those created automatically.
• Transcoding config endpoints: New Management API v2 endpoints let you list a site’s transcoding configs and retrieve a specific config by ID, allowing you to confirm its settings before uploading media.
• Premium transcoding: Non-AVC codecs, 4K video, and audio loudness normalization require a premium transcoding entitlement and incur additional costs. If the entitlement is removed, JWX continues creating renditions with standard features and ignores any premium settings instead of failing the transcoding job.

This update helps you:

• Create complete rendition ladders without configuring each rendition individually
• Standardize transcoding across your site
• Customize transcoding for specific workflows or media items
• Retain full control over renditions, whether they are created automatically or manually.

To learn more, see the CMAF VOD overview.

NOTE: Automatic rendition creation is currently available only through the Management API v2. Support for uploading through the JWX dashboard will be added in a future release.