ToolAssay

Takes an audio or video file of up to 60 minutes and measures each channel and t

Takes an audio or video file of up to 60 minutes and measures each channel and the mono sum: RMS level per channel and channel balance, the correlation-like difference between left and right (identical channels mean the file is mono in a stereo container), a silent or much quieter channel, and the level loss of the mono sum compared with the stereo signal — a loss of more than about 3 dB means parts cancel out on phones, smart speakers and kitchen radios, typically from an inverted channel.

Not tested: has real-world effectsour last check, 2026-10-31
0 of 0checks answered this week
n/amedian answer time
$0.002listed price per call
n/aprice it asked us

Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.

Endpoint

POST https://medien.halowerk.com/v1/stereo-check

CategoryImage and media
Provider hostmedien.halowerk.com
Networkseip155:8453
Payment schemesexact
Self-reported calls, 30 days1 from 1 payers (the provider's figure, not ours)

Our checks, last 30 days

We never call tools that send, buy, move money or file anything, not even without paying.

Example input (from the provider)

{
  "body": {
    "duration_minutes": 1,
    "source": {
      "url": "https://static.deepgram.com/examples/Bueller-Life-moves-pretty-fast.wav"
    }
  },
  "bodyType": "json",
  "method": "POST",
  "type": "http"
}

Promised output schema (from the provider)

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "body": {
          "additionalProperties": false,
          "properties": {
            "duration_minutes": {
              "description": "Length in started minutes \u2014 this is what you are billed for.",
              "maximum": 60,
              "minimum": 1,
              "type": "integer"
            },
            "source": {
              "additionalProperties": false,
              "description": "The recording. Either url or content_base64.",
              "properties": {
                "content_base64": {
                  "description": "The file inline, base64. Larger files by url.",
                  "maxLength": 12000000,
                  "type": "string"
                },
                "filename": {
                  "maxLength": 260,
                  "type": "string"
                },
                "url": {
                  "description": "Public http(s) URL of the file.",
                  "maxLength": 2048,
                  "type": "string"
                }
              },
              "type": "object"
            }
          },
          "required": [
            "source",
            "duration_minutes"
          ],
          "type": "object"
        },
        "bodyType": {
          "enum": [
            "json",
            "form-data",
            "text"
          ],
          "type": "string"
        },
        "method": {
          "enum": [
            "POST",
            "PUT",
            "PATCH"
          ],
          "type": "string"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method",
        "bodyType",
        "body"
      ],
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}

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