Rules for extracting captions from sources
To use captions in a source, Elemental Live must be able to extract the captions. The rules are as follows:
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Elemental Live can always extract sidecar captions from the source, so long as Elemental Live supports the captions format.
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Elemental Live can always support captions from a streaming source, so long as Elemental Live supports the captions format and the input type.
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Elemental Live can't necessarily extract captions from a file source. Even if Elemental Live supports the captions format, it can extract the captions only from specific container types. See the table that follows.
| Container in file input | Elemental Live can extract captions from the container? |
|---|---|
| Adobe Flash | |
| Audio Video Interleave (AVI) | |
| HLS | Yes |
| Matroska | |
| MP4 | Yes |
| MPEG Transport Stream (TS) | Yes |
| MPEG-1 System Stream | |
| MXF | Yes |
| No container | Yes |
| QuickTime | Yes |
| WAV | Yes |
