{
  "title": "MP4 subtitle stream-copy demonstration",
  "label": "Real local command output · synthetic sample",
  "date": "2026-10-27",
  "versions": {
    "ffmpeg": "ffmpeg version N-118789-gb5be0c0aa9-20250316 Copyright (c) 2000-2025 the FFmpeg developers",
    "ffprobe": "ffprobe version N-118789-gb5be0c0aa9-20250316 Copyright (c) 2007-2025 the FFmpeg developers"
  },
  "inputStreams": [
    {
      "index": 0,
      "codec_name": "h264",
      "codec_type": "video",
      "tags": {
        "language": "und"
      }
    },
    {
      "index": 1,
      "codec_name": "aac",
      "codec_type": "audio",
      "tags": {
        "language": "eng"
      }
    },
    {
      "index": 2,
      "codec_name": "aac",
      "codec_type": "audio",
      "tags": {
        "language": "spa"
      }
    },
    {
      "index": 3,
      "codec_name": "mov_text",
      "codec_type": "subtitle",
      "tags": {
        "language": "eng"
      }
    },
    {
      "index": 4,
      "codec_name": "mov_text",
      "codec_type": "subtitle",
      "tags": {
        "language": "spa"
      }
    }
  ],
  "outputStreams": [
    {
      "index": 0,
      "codec_name": "h264",
      "codec_type": "video",
      "tags": {
        "language": "und"
      }
    },
    {
      "index": 1,
      "codec_name": "aac",
      "codec_type": "audio",
      "tags": {
        "language": "eng"
      }
    },
    {
      "index": 2,
      "codec_name": "aac",
      "codec_type": "audio",
      "tags": {
        "language": "spa"
      }
    }
  ]
}