Asset conversion transform

An Asset Conversion transform allows conversion from a variety of input formats to an MP4 asset. Such transform will ingest a live event recording or a VOD asset and generate a set of MP4 files depending on the selected preset.

This transform also converts legacy AMS events or older Smooth Streaming assets to the MP4v4 format. Once converted, you can use features such as thumbnails, subtitle side-loading, AI-based transcription and translation, and VOD dubbing.

MK.IO provides three built-in presets:

• CopyTopBitrateInterleaved: Generates a single MP4 file using the top-bitrate video rendition with all audio interleaved. Use this for download-only scenarios. This file requires a Predefined_DownloadOnly or Predefined_DownloadAndClearStreaming streaming policy.
• CopyAllBitratesNonInterleaved: Copies all video and audio streams as separate output files. Use this when your source video rendition files contain video only, with no audio interleaved. Output includes:
  • MP4 files (.mp4), one per video or audio rendition.
  • Server manifest (.ism) used as the access point for streaming endpoints.
  • Client manifest (.mpd).
  • Index files (.mpi), one per rendition.
• CopyAllBitratesInterleaved: Copies all video streams as separate files with all audio interleaved in each. Use this when your source asset has audio bundled within each video rendition — the most common structure for HSS assets from AMS. Output includes:
  • MP4 files (.mp4), one per video rendition with all audio interleaved.
  • Server manifest (.ism) used as the access point for streaming endpoints.
  • Client manifest (.mpd).
  • Index files (.mpi), one per rendition.

When selecting an asset conversion transform, you only need to select the source asset. MK.IO identifies the source files automatically.