MediaConvert
User Guide

Captions Support Tables by Output Container Type

CMAF Output Container

The following table lists supported output caption formats for this output container, sorted by the input caption container and input caption format.

Embedded captions formats include:

  • CEA-608

  • EIA-608

  • CEA-708

  • EIA-708

Ancillary captions include:

  • Captions in the Quicktime Captions Track

  • Captions in the MXF container VANC data

Input Caption Container Input Caption Format Supported Output Caption Formats
MP4 Container Embedded Web-VTT
MXF Container Embedded Web-VTT
Ancillary Web-VTT
QuickTime Container Embedded Web-VTT
Ancillary Web-VTT
Raw Container SRT Web-VTT
TTML Web-VTT
STL Web-VTT
SCC Web-VTT
MPEG2-TS Container Embedded Web-VTT
Teletext Web-VTT

DASH Output Container

The following table lists supported output caption formats for this output container, sorted by the input caption container and input caption format.

Embedded captions formats include:

  • CEA-608

  • EIA-608

  • CEA-708

  • EIA-708

Ancillary captions include:

  • Captions in the Quicktime Captions Track

  • Captions in the MXF container VANC data

Input Caption Container Input Caption Format Supported Output Caption Formats
MP4 Container Embedded Burn in

TTML

MXF Container Embedded Burn in

TTML

Ancillary Burn in

TTML

Teletext Burn in

TTML

QuickTime Container Embedded Burn in

TTML

Ancillary Burn in

TTML

Raw Container SRT Burn in

TTML

TTML Burn in

TTML

STL Burn in

TTML

SCC Burn in

TTML

MPEG2-TS Container Embedded Burn in

TTML

Teletext Burn in

TTML

DVB-Sub Burn in

HLS Output Container

The following table lists supported output caption formats for this output container, sorted by the input caption container and input caption format.

Embedded captions formats include:

  • CEA-608

  • EIA-608

  • CEA-708

  • EIA-708

Ancillary captions include:

  • Captions in the Quicktime Captions Track

  • Captions in the MXF container VANC data

Note

For HLS outputs, if your input caption format is Teletext or DVB-Sub, you can include output captions in those formats as well. Standard Apple players will not recognize those captions, but custom players may.

Note

AWS Elemental MediaConvert has the following limitations with Teletext in outputs:

  • The service doesn't support captions formatting and positioning

  • You can use only Teletext level 1.5 languages

Input Caption Container Input Caption Format Supported Output Caption Formats
MP4 Container Embedded

Burn-in

Embedded

Web-VTT

MXF Container Embedded

Burn-in

Embedded

Web-VTT

Ancillary

Burn-in

Embedded

Web-VTT

Teletext

Burn in

TTML

QuickTime Container Embedded

Burn-in

Embedded

Web-VTT

Ancillary

Burn-in

Embedded

Web-VTT

Raw Container SRT

Burn-in

Web-VTT

TTML

Burn-in

Web-VTT

STL

Burn-in

Web-VTT

SCC

Burn-in

Embedded

Web-VTT

MPEG2-TS Container Embedded

Burn-in

Embedded

Web-VTT

Teletext

Burn-in

Web-VTT

DVB-Sub Burn-in

MS Smooth (MSS) Output Container

The following table lists supported output caption formats for this output container, sorted by the input caption container and input caption format.

Embedded captions formats include:

  • CEA-608

  • EIA-608

  • CEA-708

  • EIA-708

Ancillary captions include:

  • Captions in the Quicktime Captions Track

  • Captions in the MXF container VANC data

Input Caption Container Input Caption Format Supported Output Caption Formats
MP4 Container Embedded Burn-in

TTML

MXF Container Embedded Burn-in

TTML

Ancillary Burn-in

TTML

Teletext Burn-in

TTML

QuickTime Container Embedded Burn-in

TTML

Ancillary Burn-in

TTML

Raw Container SRT Burn-in

TTML

SMI Burn-in

TTML

TTML Burn-in

TTML

STL Burn-in

TTML

SCC Burn-in

TTML

MPEG2-TS Container Embedded Burn-in

TTML

Teletext Burn-in

TTML

DVB-Sub

MP4 Output Container

The following table lists supported output caption formats for this output container, sorted by the input caption container and input caption format.

Embedded captions formats include:

  • CEA-608

  • EIA-608

  • CEA-708

  • EIA-708

Ancillary captions include:

  • Captions in the Quicktime Captions Track

  • Captions in the MXF container VANC data

Input Caption Container Input Caption Format Supported Output Caption Formats
MP4 Container Embedded Burn In

Embedded

MXF Container Embedded Burn In

Embedded

Ancillary Burn In

Embedded

Teletext Burn In

Embedded

QuickTime Container Embedded Burn In

Embedded

Ancillary Burn In

Embedded

Raw Container SRT Burn In
TTML Burn In
STL Burn In
SCC Burn In

Embedded

MPEG2-TS Container Embedded Burn In

Embedded

Teletext Burn In
DVB-Sub Burn In

MPEG2-TS File Output Container

The following table lists supported output caption formats for this output container, sorted by the input caption container and input caption format.

Embedded captions formats include:

  • CEA-608

  • EIA-608

  • CEA-708

  • EIA-708

Ancillary captions include:

  • Captions in the Quicktime Captions Track

  • Captions in the MXF container VANC data

Note

AWS Elemental MediaConvert has the following limitations with Teletext in outputs:

  • The service doesn't support captions formatting and positioning

  • You can use only Teletext level 1.5 languages

Input Caption Container Input Caption Format Supported Output Caption Formats
MP4 Container Embedded

Burn-in

DVB-Sub

Embedded

MXF Container Embedded

Burn-in

DVB-Sub

Embedded

Ancillary

Burn-in

DVB-Sub

Embedded

Teletext

Burn-in

DVB-Sub

Teletext

QuickTime Container Embedded

Burn-in

DVB-Sub

Embedded

Ancillary

Burn-in

DVB-Sub

Embedded

Raw Container SRT

Burn-in

Teletext

SMI

Burn-in

DVB-Sub

TTML

Burn-in

Teletext

DVB-Sub

STL

Burn-in

Teletext

DVB-Sub

SCC

Burn-in

DVB-Sub

Embedded

MPEG2-TS Container Embedded Burn-in

DVB-Sub

Embedded

Teletext

Burn-in

DVB-Sub

Teletext

DVB-Sub

Burn-in

DVB-Sub

QuickTime Output Container

The following table lists supported output caption formats for this output container, sorted by the input caption container and input caption format.

Embedded captions formats include:

  • CEA-608

  • EIA-608

  • CEA-708

  • EIA-708

Ancillary captions include:

  • Captions in the Quicktime Captions Track

  • Captions in the MXF container VANC data

Input Caption Container Input Caption Format Supported Output Caption Formats
MP4 Container Embedded Burn-in

Embedded

MXF Container Embedded Burn-in

Embedded

Ancillary Burn-in

Embedded

Teletext Burn-in
QuickTime Container Embedded Burn-in

Embedded

Ancillary Burn-in

Embedded

Raw Container SRT Burn-in
TTML Burn-in
STL Burn-in
SCC Burn-in

Embedded

MPEG2-TS Container Embedded Burn-in

Embedded

Teletext Burn-in
DVB-Sub Burn-in

No Output Container

The following table lists supported output caption formats for this output container, sorted by the input caption container and input caption format.

Embedded captions formats include:

  • CEA-608

  • EIA-608

  • CEA-708

  • EIA-708

Ancillary captions include:

  • Captions in the Quicktime Captions Track

  • Captions in the MXF container VANC data

Input Caption Container Input Caption Format Supported Output Caption Formats
MP4 Container Embedded Burn-in

Embedded

MXF Container Embedded Burn-in

Embedded

Ancillary Burn-in

Embedded

Teletext Burn-in
QuickTime Container Embedded Burn-in

Embedded

Ancillary Burn-in

Embedded

Raw Container SRT Burn-in
TTML Burn-in
STL Burn-in
SCC Burn-in

Embedded

MPEG2-TS Container Embedded Burn-in

Embedded

Teletext Burn-in
DVB-Sub Burn-in