Subtitle

Name	Type	Description
include_if_source_has	array	This array allows for conditionally outputting tracks based on whether or not a specific input tracks exists. The tracks in the source are referred to by number reference: subtitle[0] refers to the first subtitle track.
include_conditions	array	Specifies conditions under which this subtitle will be used. Can use Javascript math.js nomenclature
verify	boolean	Enable or disable post transcode verification for this track. default: true
source_map	enum                           use_if_exists source_or_empty required_in_source	This specifies the behavior to use when creating a subtitle track. Selecting source_or_empty will use the source's subtitle data or create an empty track if this data does not exist. default: required_in_source
format	enum                           webvtt srt stl ass ttml imsc1 dvbsub scc timed_text	The subtitle format to use.
pid	integer	The video program ID - only used for MPEG transport streams. maximum: 8190
language	string	The ISO 639.2 three letter code for the language of the subtitle.
override_language_code	string	Override default language code (sush as ttml).
track_group_id	string	This indicates which Group this track belongs to. Multiple tracks with the same content but different bitrates would have the same track_group_id.
layer_id	string	This indicates which Layer this tracks belongs to. For example, this allows bundling one video layer and multiple audio layers with same bitrates but different languages.
layer_affinities	array	This indicates which other layers this layer can be combined with. For example, to combine audio and video layers.
match_source_language	boolean	If true, sets the output subtitle track language to be the same as the language of the subtitle track in the source.
closed_captions	object	A closed-caption extracted data to be included in the output.
dvb_options	object	The options for European Digital Video Broadcasting (DVB) subtitles.
webvtt_options	object	Options for the WebVTT output.
scc_options	object	Options for the SCC output.
mainconcept_stream_mux_options	string	Provide direct stream instruction to the MainConcept multiplexer. Values are constructed as "prop=val,prop=val". See MainConcept documentation for valid values.
profile	object	Options for profile, specific only for subtitles.
frame_rate	number string	Frame rate for output subtitles, overwrites values from source video.

---

Example subtitle

{
  "uid": "transcode_task",
  "kind": "transcode",
  "payload": {
    "location": {
      "storage_provider": "s3",
      "path": "s3://my_bucket/my_folder"
    },
    "targets": [
      {
        "file_pattern": "{source_basename}_converted{default_extension}",
        "existing_files": "replace",
        "container": {
          "kind": "mp4"
        },
        "video": {
          "width": 1280,
          "height": 720,
          "codec": "h264"
        },
        "audio": [
          {
            "codec": "aac",
            "channels": 2,
            "sample_rate": 48000,
            "sample_size": 16,
            "bitrate_kb": 96
          }
        ],
        "subtitle": [
          {
            "source_map": "use_if_exists",
            "format": "scc",
            "language": "en"
          }
        ]
      }
    ]
  }
}