Get Silence Segments

Returns presigned URLs for predefined silence media for a given language and signer. URLs are valid for 15 minutes.

Use silence as a placeholder or transition when no translation is available — for example, to keep an HLS feed running between segments, or to composite an idle signer over your own background.

GET/v1/silence

Query Parameters

Name	Type	Required	Description
language	string	optional	Sign language variant (case-insensitive). Defaults to bsl. Default: `bsl` bslasl
signer	string	optional	Digital signer (case-insensitive). Must match the selected language. BSL: rae (default). ASL: max (default), jay. raemaxjay
format	string	optional	Output format. ts returns 6 HLS segments (current behaviour). mp4 returns a single concatenated file. Default: `ts` tsmp4
transparent	boolean	optional	When true, returns a single ProRes 4444 + alpha .mov for compositing over custom backgrounds. Cannot be combined with an explicit format=ts. Default: `false` truefalse

Signer–Language Mapping

Language	Valid Signers	Default
`bsl`	`rae`	`rae`
`asl`	`max`, `jay`	`max`

Providing a signer that does not match the language returns a 400 Bad Request.

Output Formats

The format and transparent parameters select what the data array contains. In every case the response shape is the same — a JSON object with a data array of presigned URLs.

Request	`data` contents	Notes
(default) or `format=ts`	6 HLS `.ts` segment URLs	Stitch into an HLS playlist as a silent filler loop.
`format=mp4`	1 MP4 URL	Single opaque, concatenated clip.
`transparent=true`	1 MOV URL	ProRes 4444 with alpha — composite over a custom background.

Format rules

format accepts ts or mp4 only. mov is not requested directly — it is derived from transparent=true.
transparent=true on its own returns the MOV (the default ts is ignored).
transparent=true combined with an explicit format=ts returns a 400 Bad Request (transparent output not available for ts format). transparent=true&format=mp4 is accepted and returns the MOV.

Request

curl -s \
  -H "X-API-KEY: YOUR_API_KEY" \
  "https://ai.api.production.signapsesolutions.com/v1/silence"

Response

{
  "data": [
    "https://assets.example/silence/bsl/rae/ts/segment_000.ts?X-Amz-Expires=900",
    "https://assets.example/silence/bsl/rae/ts/segment_001.ts?X-Amz-Expires=900",
    "https://assets.example/silence/bsl/rae/ts/segment_002.ts?X-Amz-Expires=900",
    "https://assets.example/silence/bsl/rae/ts/segment_003.ts?X-Amz-Expires=900",
    "https://assets.example/silence/bsl/rae/ts/segment_004.ts?X-Amz-Expires=900",
    "https://assets.example/silence/bsl/rae/ts/segment_005.ts?X-Amz-Expires=900"
  ]
}