AWS Elemental MediaLive
User Guide

SMPTE-TT Captions in Microsoft Smooth

Follow this procedure to add output captions in the SMPTE-TT format (only possible in a Microsoft Smooth output group).

  1. In the channel that you are creating, in the navigation pane, find the Microsoft Smooth output group (which you have already created).

  2. Find the output where you want to add the captions, or create a new output. This output might already be set up with video and audio, or you could set up the video and audio after setting up the captions.

  3. Choose the output.

  4. For Stream settings, remove the video and audio encodes from this output by choosing the encode and selecting Remove video or Remove audio.

  5. Choose Add caption. This output should now contain one caption section and no video or audio sections.

  6. For Caption description name, type a name for this captions asset that is unique in the channel. For example, SmpteTT Czech. Or accept the default (which is autogenerated).

  7. For Caption selector name, type the name of the caption selector that you created in step 1. Specify the selector that identifies the captions asset that is the source for the captions in this output.

  8. For Caption settings, choose SMPTE-TT.

  9. Complete the fields that appear for the selected format. For details about a field, choose the Info link beside the field.

  10. Repeat these steps to create more SMPTE-TT captions in the Microsoft Smooth output group, as applicable.