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Subtitle encoding parameters

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General parameters

Parameter Description
Codec

Select the codec used to convert the subtitles. DVBTTML and DASHIFTTML are only valid when ITV export type is used. Closed caption CEA 608 is only valid when both IPTV export type and 25i/50p to 29.97i/59.94p frame rate conversion are used.
Blackout

This blackout configuration will be applied to the related audio/video/subtitles stream.

Teletext subtitles

Teletext Pass-through

Parameter Description
Codec Select the codec used to convert the subtitles, in this case, Pass-through.
Override subtitle language in the teletext descriptor

Override language information (ISO639 language triplet) of a selected subtitle. The subtitle selected by the magazine and page should be already present in the descriptor

SDI Teletext Pass-through

Parameter Description
Codec Select the codec used to convert the subtitles, in this case, Pass-through.
Adjust display height Only available with DVB-Subtitles input subtitles.

Adjust the display height for NTSC resolution. If not checked, optimized for PAL resolution.

Teletext descriptor

Parameter Description
Language

Input language to encode in ISO 639 format (3letter code, lowercase). If not present in the input stream, the subtitles will not be transcoded.
Magazine

1digit magazine number (18) used to identify the Teletext service.
Page

Page number (099) used to identify the Teletext service.
Field

Closed caption field as defined by the standard. Only one of each value is allowed.

DVB-Subtitles with Teletext subtitles input

Parameter Description
Codec Select the codec used to convert the subtitles, in this case, DVB-Subtitles.
Magazine

1digit magazine number (18) used to identify the Teletext service.
Page

Page number (099) used to identify the Teletext service.

DVB-TTML with Teletext subtitles input

Parameter Description
Codec Select the codec used to convert the subtitle, in this case, DVB-TTML.
Magazine

1digit magazine number (18) used to identify the Teletext service.
Page

Page number (099) used to identify the Teletext service.
Profile

Specify the DVB TTML processor profile.
Purpose

Purpose of the subtitle service.
Suitable for TTS

Boolean value that indicates whether the subtitles are suitable for texttospeech (TTS). If the value is not set, this means unknown suitability.
Forced language

Overwrites the language of the audio track. If not set the original language is kept.


Format:

3 alphanumeric characters

DASH-IF-TTML with Teletext subtitles input

Parameter Description
Codec Select the codec used to convert the subtitle, in this case, DASHIF-TTML.
Magazine

1digit magazine number (18) used to identify the Teletext service.
Page

Page number (099) used to identify the Teletext service.
Profile

Specify the DASHIF TTML processor profile.
Role

Role of the subtitle service.


  • Main: Programme uses subtitles to translate foreign soundtrack or parts of soundtrack into preferred language.

  • Alternate: Subtitles providing a translation of the main audio of the programme.

  • Commentary: Subtitles providing additional information for the programme.

  • Forcehardofhearing: Subtitles for the hard of hearing in the same language as the programme.

  • Subtitle: Generate subtitles.
Forced language

Overwrites the language of the audio track. If not set the original language is kept.


Format:

3 alphanumeric characters

DVB-TTML with CEA-608/CEA-708 Closed Captions input

Parameter Description
Codec Select the codec used to convert the subtitle, in this case, DVB-TTML.
Profile

Specify the DVB TTML processor profile.
Purpose

Purpose of the subtitle service.
Suitable for TTS

Boolean value that indicates whether the subtitles are suitable for texttospeech (TTS). If the value is not set, this means unknown suitability.
Forced language

Overwrites the language of the audio track. If not set the original language is kept.


Format:

3 alphanumeric characters
Closed caption service

Specify the CEA608 or CEA708 service number.


Possible values for CEA-608: cc_1, cc_2, cc_3 and cc_4.
Possible values for CEA-708: service_1, service _2, service _3 and service _4

DASHIF-TTML with CEA-608/CEA-708 Closed Captions input

Parameter Description
Codec Select the codec used to convert the subtitle, in this case, DASHIF-TTML.
Profile

Specify the DASHIF TTML processor profile.
Role

Role of the subtitle service.


  • Main: Programme uses subtitles to translate foreign soundtrack or parts of soundtrack into preferred language.

  • Alternate: Subtitles providing a translation of the main audio of the programme.

  • Commentary: Subtitles providing additional information for the programme.

  • Forcehardofhearing: Subtitles for the hard of hearing in the same language as the programme.

  • Subtitle: Generate subtitles.
Forced language

Overwrites the language of the audio track. If not set the original language is kept.


Format:

3 alphanumeric characters
Closed caption service

Specify the CEA608 or CEA708 service number.


Possible values for CEA-608: cc_1, cc_2, cc_3 and cc_4.
Possible values for CEA-708: service_1, service _2, service _3 and service _4

Closed caption CEA 608

Parameter Description
Codec Select the codec used to convert the subtitles, in this case, Closed caption CEA 608.
Magazine

1digit magazine number (18) used to identify the Teletext service.
Page

Page number (099) used to identify the Teletext service.
Field

Closed caption field as defined by the standard. Only one of each value is allowed.

DVB-Subtitles Pass-through

Parameter Description
Codec Select the codec used to convert the subtitles, in this case, Pass-through.
Forced language

Overwrites the language of the audio track. If not set the original language is kept.

.
Adjust display height Only available with DVB-Subtitles input subtitles.

Adjust the display height for NTSC resolution. If not checked, optimized for PAL resolution.

DVB-Subtitles with SCTE-27 subtitles input

Parameter Description
Codec Select the codec used to convert the subtitles, in this case, DVB-Subtitles.
Forced language

Overwrites the language of the audio track. If not set the original language is kept.

.

DVB-Teletext with ARIB B24 subtitles input

You should define the following parameters:

  • Codec used to convert the subtitle, in this case, DVB-Teletext.|
  • Selected stream:

    Selection of the stream to encode in the input subtitle. One subtitle encoding section must be defined per language.

  • Teletext encoding:

    Configuration of the encoding of the teletext stream.

  • Teletext descriptor:

    Configuration of the descriptor of the teletext stream.

Selected stream

Parameter Description
Language

Input language to encode in ISO 639 format (3letter code, lowercase). If not present in the input stream, the subtitles will not be transcoded.

Teletext encoding

Parameter Description
Magazine

1digit magazine number (18) used to identify the Teletext service.
Page

Page number (099) used to identify the Teletext service.

Teletext descriptor

Parameter Description
Language

Input language to encode in ISO 639 format (3letter code, lowercase). If not present in the input stream, the subtitles will not be transcoded.
Magazine

1digit magazine number (18) used to identify the Teletext service.
Page

Page number (099) used to identify the Teletext service.
Field

Closed caption field as defined by the standard. Only one of each value is allowed.

Related information
Configure subtitle encoding

Subtitle burn-in configuration parameters

Parameter Description
Burn-in

Configuration of the subtitle to be used for burnin in the video. Format available for burnin: DVBsubtitles, Teletext.

Related information
Configure subtitle burn-in

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