{
  "name": "Segment large audios and Transcribe",
  "nodes": [
    {
      "parameters": {
        "conditions": {
          "options": {
            "caseSensitive": true,
            "leftValue": "",
            "typeValidation": "strict",
            "version": 2
          },
          "conditions": [
            {
              "id": "35a45b26-2d2c-4ee4-bb60-8f44e042ffed",
              "leftValue": "={{ $json.fileSizeMB }}",
              "rightValue": 20,
              "operator": {
                "type": "number",
                "operation": "gte"
              }
            }
          ],
          "combinator": "and"
        },
        "options": {}
      },
      "type": "n8n-nodes-base.if",
      "typeVersion": 2.2,
      "position": [
        368,
        -1824
      ],
      "id": "4391b4fe-65fd-4198-a70d-f7caaf68c2b7",
      "name": "If size > 20mb"
    },
    {
      "parameters": {
        "executeOnce": false,
        "command": "=ffmpeg -i \"{{ $('If size > 20mb').item.json.path }}\" 2>&1 | grep -oE \"[0-9]{1,}:?[0-9]{2}:[0-9]{2}\""
      },
      "type": "n8n-nodes-base.executeCommand",
      "typeVersion": 1,
      "position": [
        816,
        -1840
      ],
      "id": "67e0f4d5-1f3f-426f-a97c-37feee715308",
      "name": "Get Audio duration",
      "alwaysOutputData": false
    },
    {
      "parameters": {
        "command": "=ffmpeg -i \"{{ $('Get Folder name').item.json.path }}\" \\\n       -segment_format {{ $('Get Folder name').item.json.fileExtension }} \\\n       -f segment \\\n       -segment_time {{ $json.secondsPerSegment }} \\\n       -c copy \\\n       \"/tmp/{{ $('Get Folder name').item.json.folder_name }}/{{ $('Get Folder name').item.json.folder_name }}_%03d.{{ $('Get Folder name').item.json.fileExtension }}\""
      },
      "type": "n8n-nodes-base.executeCommand",
      "typeVersion": 1,
      "position": [
        1552,
        -1840
      ],
      "id": "14ed1c10-8676-46d3-99e9-63305f7237c1",
      "name": "Segment Audio by Time"
    },
    {
      "parameters": {
        "command": "=mkdir -p \"/tmp/{{ $json.folder_name }}\""
      },
      "type": "n8n-nodes-base.executeCommand",
      "typeVersion": 1,
      "position": [
        624,
        -1952
      ],
      "id": "4e64acfa-319c-48ae-b261-feb8c40bb2f1",
      "name": "Create folder"
    },
    {
      "parameters": {
        "assignments": {
          "assignments": [
            {
              "id": "382697db-877f-47ef-a124-39e314bcd88e",
              "name": "folder_name",
              "value": "={{ $json.fileName.split('.')[0] }}",
              "type": "string"
            },
            {
              "id": "10def6d8-a621-4228-a206-5d7bad188d95",
              "name": "fileSizeMB",
              "value": "={{ \n  $json.fileSize.toLowerCase().includes('mb')? \n  $json.fileSize.split(' ')[0] :  \n\n  $json.fileSize.toLowerCase().includes('kb')? \n    $json.fileSize.split(' ')[0] / 1000 :  \n\n    $json.fileSize.toLowerCase().includes('gb')? \n      $json.fileSize.split(' ')[0] * 1000 :  \n      0\n}}",
              "type": "number"
            },
            {
              "id": "00cd9cd3-bb27-454c-ae72-ae2b9ca446df",
              "name": "path",
              "value": "={{ $('Start').item.json.path }}",
              "type": "string"
            }
          ]
        },
        "includeOtherFields": true,
        "options": {}
      },
      "type": "n8n-nodes-base.set",
      "typeVersion": 3.4,
      "position": [
        144,
        -1824
      ],
      "id": "bd88d415-2e46-4ca4-ad62-005c9b73e355",
      "name": "Get Folder name"
    },
    {
      "parameters": {
        "assignments": {
          "assignments": [
            {
              "id": "45a7cdf6-5b33-4474-9aca-755cc2077c99",
              "name": "duration",
              "value": "={{ $json.stdout }}",
              "type": "string"
            },
            {
              "id": "12ac881b-a1ac-43d8-a506-795643ef9ca7",
              "name": "file_size",
              "value": "={{ $('Get Folder name').item.json.fileSizeMB }}",
              "type": "number"
            }
          ]
        },
        "options": {}
      },
      "type": "n8n-nodes-base.set",
      "typeVersion": 3.4,
      "position": [
        1040,
        -1840
      ],
      "id": "6b3d61c7-f1c9-4bf8-bd32-41c4b56cab83",
      "name": "Get size in MB"
    },
    {
      "parameters": {
        "command": "=ls \"/tmp/{{ $('Get Folder name').item.json.folder_name }}\""
      },
      "type": "n8n-nodes-base.executeCommand",
      "typeVersion": 1,
      "position": [
        816,
        -1632
      ],
      "id": "e1df82fd-f498-4ef4-b4c6-f70b8d7951ea",
      "name": "List files"
    },
    {
      "parameters": {
        "conditions": {
          "options": {
            "caseSensitive": true,
            "leftValue": "",
            "typeValidation": "strict",
            "version": 2
          },
          "conditions": [
            {
              "id": "57eb6f53-8497-41f4-ad7f-4efe14572171",
              "leftValue": "={{ $json.stdout.split('\\n').length }}",
              "rightValue": "={{ $('Calculate secondsPerSegment').item.json.totalSegments }}",
              "operator": {
                "type": "number",
                "operation": "gte"
              }
            }
          ],
          "combinator": "and"
        },
        "options": {}
      },
      "type": "n8n-nodes-base.if",
      "typeVersion": 2.2,
      "position": [
        1040,
        -1632
      ],
      "id": "b703e88a-e9f9-4fae-9310-cf955eb9542c",
      "name": "If has complete segments"
    },
    {
      "parameters": {},
      "type": "n8n-nodes-base.wait",
      "typeVersion": 1.1,
      "position": [
        1248,
        -1488
      ],
      "id": "7ca61751-3ee3-4fe9-9148-aa5a98a18854",
      "name": "Wait 5s",
      "webhookId": "9f71e55b-7ace-4e24-8b04-fd95a4303632"
    },
    {
      "parameters": {
        "assignments": {
          "assignments": [
            {
              "id": "b9f094a0-9885-4408-8d0c-40c50aa435d5",
              "name": "files",
              "value": "={{ $json.stdout.split('\\n') }}",
              "type": "array"
            }
          ]
        },
        "options": {}
      },
      "type": "n8n-nodes-base.set",
      "typeVersion": 3.4,
      "position": [
        1248,
        -1648
      ],
      "id": "31b36fa7-d470-4aea-a5e4-275d985ec127",
      "name": "getFiles"
    },
    {
      "parameters": {
        "fieldToSplitOut": "files",
        "options": {}
      },
      "type": "n8n-nodes-base.splitOut",
      "typeVersion": 1,
      "position": [
        1552,
        -1648
      ],
      "id": "f0429c9c-582d-431d-8aa8-532d73ae64b2",
      "name": "Split Out2"
    },
    {
      "parameters": {
        "fileSelector": "=/tmp/{{ $('Get Folder name').item.json.folder_name }}/{{ $json.files }}",
        "options": {}
      },
      "type": "n8n-nodes-base.readWriteFile",
      "typeVersion": 1,
      "position": [
        1552,
        -1424
      ],
      "id": "a415eb13-b128-4e84-928a-6b68de306149",
      "name": "Read segment"
    },
    {
      "parameters": {
        "fieldsToAggregate": {
          "fieldToAggregate": [
            {
              "fieldToAggregate": "transcription"
            }
          ]
        },
        "options": {}
      },
      "type": "n8n-nodes-base.aggregate",
      "typeVersion": 1,
      "position": [
        656,
        -1232
      ],
      "id": "8e66c03d-b713-4059-b82b-2b04afbbe58b",
      "name": "Aggregate"
    },
    {
      "parameters": {
        "assignments": {
          "assignments": [
            {
              "id": "09aff216-057f-42fa-9743-5f3ecb6743c4",
              "name": "transcription",
              "value": "={{ $json.content.parts.map(item => item.text).join('. ') }}",
              "type": "string"
            }
          ]
        },
        "options": {}
      },
      "type": "n8n-nodes-base.set",
      "typeVersion": 3.4,
      "position": [
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        -1232
      ],
      "id": "a2306b7f-be89-4573-a76b-670d822e40ab",
      "name": "Getting transcription"
    },
    {
      "parameters": {
        "command": "=rm -rf \"/tmp/{{ $('Get Folder name').item.json.folder_name }}\""
      },
      "type": "n8n-nodes-base.executeCommand",
      "typeVersion": 1,
      "position": [
        352,
        -1424
      ],
      "id": "54ab6a47-c5c9-4a44-9808-e52f86e235e4",
      "name": "Clean temp files"
    },
    {
      "parameters": {
        "conditions": {
          "options": {
            "caseSensitive": true,
            "leftValue": "",
            "typeValidation": "strict",
            "version": 2
          },
          "conditions": [
            {
              "id": "b9bff389-5dfd-4291-858b-811fa80f52c2",
              "leftValue": "={{ Number($('Read File from Disk').item.json.fileSize.split(' ')[0]) }}",
              "rightValue": 20,
              "operator": {
                "type": "number",
                "operation": "gte"
              }
            }
          ],
          "combinator": "and"
        },
        "options": {}
      },
      "type": "n8n-nodes-base.if",
      "typeVersion": 2.2,
      "position": [
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        -1232
      ],
      "id": "b9614a0e-634e-4d7d-b8fe-13ef7dc766fc",
      "name": "If size > 20MB"
    },
    {
      "parameters": {
        "jsCode": "const MAX_SIZE = 20 // MB\n\nconst durations = $input.all()[0].json.duration.split('\\n')\nconst hasManyDuration = durations.length > 1\nconst time = hasManyDuration ? durations[1] : durations[0]\nconst size = $input.all()[0].json.file_size\n\nconst totalSeconds = time.split(':').reduce((acc, curr, index) => {\n  return acc + parseInt(curr) * Math.pow(60, 2 - index);\n}, 0);\n\nconst totalSegments = Math.ceil(size / MAX_SIZE);\n\nconst secondsPerSegment = Math.ceil(totalSeconds / totalSegments);\n\nreturn { secondsPerSegment, totalSegments }"
      },
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [
        1248,
        -1840
      ],
      "id": "f3e00b4d-e4af-4752-889b-b8e927d8f3d1",
      "name": "Calculate secondsPerSegment"
    },
    {
      "parameters": {
        "assignments": {
          "assignments": [
            {
              "id": "4df8fba3-aed2-4eee-a06b-e9c2b8a7bca0",
              "name": "data",
              "value": "={{ $json.transcription.join(' ') }}",
              "type": "string"
            }
          ]
        },
        "options": {}
      },
      "type": "n8n-nodes-base.set",
      "typeVersion": 3.4,
      "position": [
        912,
        -1232
      ],
      "id": "53ec46ec-e3d0-495a-b0b1-da7ed3248ed2",
      "name": "Join transcriptions"
    },
    {
      "parameters": {
        "workflowInputs": {
          "values": [
            {
              "name": "path",
              "type": "any"
            }
          ]
        }
      },
      "id": "92d9347d-7966-4ee4-b366-d906a6861cde",
      "typeVersion": 1.1,
      "name": "Start",
      "type": "n8n-nodes-base.executeWorkflowTrigger",
      "position": [
        -288,
        -1824
      ]
    },
    {
      "parameters": {
        "fileSelector": "={{ $json.path }}",
        "options": {}
      },
      "type": "n8n-nodes-base.readWriteFile",
      "typeVersion": 1,
      "position": [
        -80,
        -1824
      ],
      "id": "9b9e3c9e-0588-4d0a-83e0-8d81de89b35e",
      "name": "Read File from Disk"
    },
    {
      "parameters": {
        "resource": "audio",
        "modelId": {
          "__rl": true,
          "value": "models/gemini-2.5-flash",
          "mode": "list",
          "cachedResultName": "models/gemini-2.5-flash"
        },
        "inputType": "binary",
        "options": {}
      },
      "type": "@n8n/n8n-nodes-langchain.googleGemini",
      "typeVersion": 1,
      "position": [
        -288,
        -1232
      ],
      "id": "eb4a536e-59ae-4c19-8d2a-ab2aee07c402",
      "name": "Transcribe a recording",
      "retryOnFail": true,
      "credentials": {
        "googlePalmApi": {
          "id": "y4XWN6CcBCH7Zh7L",
          "name": "Google Gemini - Personal"
        }
      }
    }
  ],
  "pinData": {
    "Start": [
      {
        "json": {
          "path": "/files/meetings/File.m4a"
        }
      }
    ]
  },
  "connections": {
    "If size > 20mb": {
      "main": [
        [
          {
            "node": "Create folder",
            "type": "main",
            "index": 0
          },
          {
            "node": "Get Audio duration",
            "type": "main",
            "index": 0
          }
        ],
        [
          {
            "node": "Transcribe a recording",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Get Audio duration": {
      "main": [
        [
          {
            "node": "Get size in MB",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Segment Audio by Time": {
      "main": [
        [
          {
            "node": "List files",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Create folder": {
      "main": [
        []
      ]
    },
    "Get Folder name": {
      "main": [
        [
          {
            "node": "If size > 20mb",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Get size in MB": {
      "main": [
        [
          {
            "node": "Calculate secondsPerSegment",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "List files": {
      "main": [
        [
          {
            "node": "If has complete segments",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "If has complete segments": {
      "main": [
        [
          {
            "node": "getFiles",
            "type": "main",
            "index": 0
          }
        ],
        [
          {
            "node": "Wait 5s",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Wait 5s": {
      "main": [
        [
          {
            "node": "List files",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "getFiles": {
      "main": [
        [
          {
            "node": "Split Out2",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Split Out2": {
      "main": [
        [
          {
            "node": "Read segment",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Read segment": {
      "main": [
        [
          {
            "node": "Transcribe a recording",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Getting transcription": {
      "main": [
        [
          {
            "node": "Aggregate",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Aggregate": {
      "main": [
        [
          {
            "node": "Join transcriptions",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Clean temp files": {
      "main": [
        []
      ]
    },
    "If size > 20MB": {
      "main": [
        [
          {
            "node": "Clean temp files",
            "type": "main",
            "index": 0
          },
          {
            "node": "Getting transcription",
            "type": "main",
            "index": 0
          }
        ],
        [
          {
            "node": "Getting transcription",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Calculate secondsPerSegment": {
      "main": [
        [
          {
            "node": "Segment Audio by Time",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Start": {
      "main": [
        [
          {
            "node": "Read File from Disk",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Join transcriptions": {
      "main": [
        []
      ]
    },
    "Read File from Disk": {
      "main": [
        [
          {
            "node": "Get Folder name",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Transcribe a recording": {
      "main": [
        [
          {
            "node": "If size > 20MB",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "active": false,
  "settings": {
    "executionOrder": "v1"
  },
  "versionId": "9c90d1eb-63e4-4875-92d5-eb54015ddce0",
  "meta": {
    "instanceId": "962974c30cbadb70c9ee57a8f9a1e2be52532c807f1dc3bdd7e369cf3ddcd257"
  },
  "id": "z0hsCcLx0IFeC0rV",
  "tags": []
}