One Input Format to a Different Output Format, One Output - AWS Elemental Server

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One Input Format to a Different Output Format, One Output

The input is set up with one format of captions and two or more languages. You want to convert the captions to a different format in the output. You want to produce only one type of output and include all the languages in that output.

Example: Two SRT Tracks to Two TTML Tracks

The input has SRT captions in German and French. You want to convert the captions to TTML and include these captions in both languages in a DASH output.

To set up a job for this example

  1. In the input, follow the procedure in Creating Input Captions Selectors to create two caption selectors:

    • One for the German SRT file.

    • One for the French SRT file.

  2. Create a stream (for example, Stream 1) and set up the video and audio.

  3. Create one caption stream (for example, Stream 2) following the procedure for sidecar captions in the topic Setting Up Output Captions in a Sidecar Format (SCC, SMI, SRT, TTML, WebVTT). Specify the captions settings as follows:

    • Caption Source: Caption Selector 1.

    • Destination Type: TTML.

    • Language: German.

    • Pass Style Information: Set it as desired, but you must set both languages identically.

    • Use ID3 as Caption Content: Leave unchecked.

  4. Create another caption stream (for example, Stream 3) following the procedure for sidecar captions in the topic Setting Up Output Captions in a Sidecar Format (SCC, SMI, SRT, TTML, WebVTT). Specify the captions settings as follows:

    • Caption Source: Caption Selector 2.

    • Language: French.

    • Other fields: same as the first caption stream.

  5. In the DASH output group, create three outputs:

    • In the first output, set the Stream field in that output to Stream 1.

    • In the second output, set the Stream field in that output to Stream 2.

    • In the third output, set the Stream field in that output to Stream 3.

    Although there are three outputs, they are all in the same output group, so the video/audio and two captions are kept together.