Captions formats supported in CMAF Ingest outputs
In this table, look up your input container and captions type. Then read across to find the caption formats that are supported in MediaLive when you have this input container and captions type, and produce these outputs:
-
CMAF Ingest output
-
MediaPackage output with a CMAF Ingest container
Note
You can also produce subtitles without a caption source in your input. Enable the Smart Subtitles feature, which uses AWS Elemental Inference to generate TTML or WebVTT subtitles from the audio. For more information, see Smart Subtitles using Elemental Inference.
| Source caption container | Source caption input | Supported output captions |
|---|---|---|
| CDI container | Embedded |
Burn-in TTML WebVTT |
| Teletext |
TTML WebVTT |
|
| HLS container | Embedded | Burn-in TTML WebVTT |
| SCTE-20 |
Burn-in TTML WebVTT |
|
| Link container | Embedded | Burn-in TTML WebVTT |
| Teletext | Burn-in TTML WebVTT |
|
| MP4 container | Ancillary | Burn-in TTML WebVTT |
| Embedded or Embedded+SCTE-20 | Burn-in TTML WebVTT |
|
| RTMP container | Embedded | Burn-in TTML WebVTT |
| MPEG-TS container (through MediaConnect or through the RTP or SRT protocols) |
Embedded or Embedded+SCTE-20 | Burn-in TTML WebVTT |
| SCTE-20 | Burn-in TTML WebVTT |
|
| Teletext | Burn-in TTML WebVTT |
|
| SMPTE 2110 | Embedded | Burn-in TTML WebVTT |
| Teletext | Burn-in TTML WebVTT |
|
| All input containers (Smart Subtitles generates subtitles from the source audio, not from captions in the source.) |
Smart Subtitles | TTML WebVTT |
