Getting ready: Set the ad avail mode - MediaLive

Getting ready: Set the ad avail mode

You must set the mode for SCTE 35 handling. The blanking, blackout, and manifest decoration features of MediaLive work different depending on the mode.

To set the ad avail mode

  1. In the channel that you are creating, in the navigation pane, choose General settings. Choose Avail configuration.

  2. Complete the fields as follows:

    Field Description
    Avail settings

    If your organization has a POIS server that handles decisions about SCTE 35 messages, then choose ESAM and read POIS signal conditioning now.

    Otherwise, choose SCTE-35 splice insert or SCTE-35 time signal apos. The mode to choose depends on the message types that you expect to be present in the source, and on how you want to handle those messages. See the table later on this page.
    Ad avail offset Set a value, if desired. For details about a field on the MediaLive console, choose the Info link next to the field.
    web_delivery_allowed_flag Typically, leave as Follow. For information about these fields, see Ad avail blanking restriction flags.
    no_regional_blackout_flag

    SCTE-35 segmentation scope

    		 This field affects segment breaks in the video output encodes, in output groups that contain transport streams. In other words, in HLS, MediaPackage, Multiplex, and UDP output groups. This field doesn't affect output groups that don't contain transport streams.

    The field controls how segmentation in these TS output groups is affected by SCTE 35 messages.

    The field is particularly important if some of these TS output groups have SCTE 35 passthrough enabled (they are SCTE 35-enabled output groups), and some don't have it enabled.

    Choose the desired appropriate value:

    • ALL_OUTPUT_GROUPS: MediaLive inserts the SCTE 35-triggered segment break in all output groups. In non-SCTE 35-enabled output groups, this behavior might result in unnecessary segment breaks or in inconsistent segment break lengths.

    • SCTE35_ENABLED_OUTPUT_GROUPS: MediaLive inserts the SCTE 35-triggered segment break only in SCTE 35-enabled output groups. This is the recommended value, because it reduces unnecessary segment breaks in output groups that aren't SCTE 35 enabled.

This table identifies how the two different ad avail modes work. It identifies the combinations of message type and segmentation type that each mode considers as an ad avail. Note that in both modes, MediaLive looks at both splice insert messages and time signal messages.

To read this table, find a message type in the first column and a segmentation type in the second column. The third and fourth columns specify whether MediaLive treats this message combination as an ad avail when the mode is splice insert mode and when the mode is timesignal APOS mode.

Message type ID Segmentation type and IDs Does splice insert mode treat this message as an ad avail Does timesignal APOS mode treat this message as an ad avail
splice insert No segmentation descriptor present No No
Provider advertisement (0x30/0x31) Yes, it treats it as an ad avail No
Distributor advertisement (0x32/0x33) Yes, it treats it as an ad avail No
Provider placement opportunity (0x34/0x35 ) Yes, it treats it as an ad avail No
Distributor placement opportunity (0x36/0x37 ) Yes, it treats it as an ad avail No
Break (0x22/0x23) Yes, it treats it as an ad avail No
Other: Programs, Chapters, Network, Unscheduled Yes, it treats it as an ad avail No
time signal No segmentation descriptor present Not applicable to time signal messages Not applicable to time signal messages
Provider advertisement (0x30/0x31) Yes, it treats it as an ad avail No
Distributor advertisement (0x32/0x33) Yes, it treats it as an ad avail No
Provider placement opportunity (0x34/0x35 ) Yes, it treats it as an ad avail Yes, it treats it as an ad avail
Distributor placement opportunity (0x36/0x37 ) Yes, it treats it as an ad avail Yes, it treats it as an ad avail
Break (0x22/0x23) Yes, it treats it as an ad avail Yes, it treats it as an ad avail
Other: Programs, Chapters, Network, Unscheduled No No