MediaConvert
User Guide

Including SCTE-35 Markers in AWS Elemental MediaConvert Outputs

SCTE-35 markers indicate where downstream systems can insert other content (usually advertisements or local programs). You can include SCTE-35 markers in transport stream and HLS outputs.

AWS Elemental MediaConvert puts SCTE-35 markers into your outputs in one of two ways:

Regardless of which way you put in the SCTE-35 markers, for outputs that have them, you can optionally do the following:

  • You can have the service blank out audio and video during the ad avails indicated by the SCTE-35 markers. For more information, see Enabling Ad Avail Blanking.

  • For HLS outputs, you can have the service include SCTE-35 information in your output HLS manifest. For more information, see Including SCTE-35 Information in Your HLS Manifest.

    Note

    MediaConvert does not process information from input manifests.

By default, the service doesn't pass through SCTE-35 markers from your input. When you set up your job to pass through markers from the input or from an ESAM document, by default, the service doesn't include SCTE-35 information in HLS manifests or do ad avail blanking.

Feature Limitations

Limitations to SCTE-35 support are as follows:

  • You can either specify insertion points using ESAM XML or pass through SCTE-35 messages from the input. You can't do both.

  • AWS Elemental MediaConvert supports only time_signal messages, not splice_insert messages.

  • The service inserts SCTE-35 messages only into the following outputs:

    • Outputs in Apple HLS output groups.

    • Outputs in File group output groups with MPEG-2 Transport Stream set for Container.

      Set the container for each output under Output settings, Container.

  • The service forces IDR (Instantaneous Decoder Refresh) frames at the insertion points specified in your ESAM XML document only in outputs that are encoded with one of the following codecs: MPEG-2, MPEG-4 AVC (H.264), or HEVC (H.265).

    Set the codec for each output under Encoding settings, Video, Video codec.