[插件 - 下载音频] 允许手动选择双声道或环绕声

[NathanIceSea]

部分视频（如 最美的夜 bilibili晚会）由于支持环绕声，使用 dash 模式下载后的音频文件为 5.1 环绕声格式，无法在双声道设备上拥有良好的播放效果；

然而通过查看 chrome media internals 可以看到网页版本播放的是双声道的音频源，且网页视频播放的声音正常，希望脚本可以手动选择强制下载双声道音频或 5.1 环绕声音频

[the1812]

找了个 5.1 环绕声测试视频，dash 中的音频信息大致是这样的，似乎无法区分音频是 5.1 还是双声道

[
  {
    "id": 30232,
    "baseUrl": "...",
    "bandwidth": 116567,
    "mimeType": "audio/mp4",
    "mime_type": "audio/mp4",
    "codecs": "mp4a.40.2",
    "width": 0,
    "height": 0,
    "frameRate": "",
    "frame_rate": "",
    "sar": "",
    "startWithSap": 0,
    "start_with_sap": 0,
    "SegmentBase": {
      "Initialization": "0-817",
      "indexRange": "818-4989"
    },
    "segment_base": {
      "initialization": "0-817",
      "index_range": "818-4989"
    },
    "codecid": 0
  },
  {
    "id": 30216,
    "baseUrl": "...",
    "bandwidth": 45569,
    "mimeType": "audio/mp4",
    "mime_type": "audio/mp4",
    "codecs": "mp4a.40.5",
    "width": 0,
    "height": 0,
    "frameRate": "",
    "frame_rate": "",
    "sar": "",
    "startWithSap": 0,
    "start_with_sap": 0,
    "SegmentBase": {
      "Initialization": "0-827",
      "indexRange": "828-4999"
    },
    "segment_base": {
      "initialization": "0-827",
      "index_range": "828-4999"
    },
    "codecid": 0
  },
  {
    "id": 30280,
    "baseUrl": "...",
    "bandwidth": 141586,
    "mimeType": "audio/mp4",
    "mime_type": "audio/mp4",
    "codecs": "mp4a.40.2",
    "width": 0,
    "height": 0,
    "frameRate": "",
    "frame_rate": "",
    "sar": "",
    "startWithSap": 0,
    "start_with_sap": 0,
    "SegmentBase": {
      "Initialization": "0-817",
      "indexRange": "818-4989"
    },
    "segment_base": {
      "initialization": "0-817",
      "index_range": "818-4989"
    },
    "codecid": 0
  }
]

[CloudEagle99]

要不试试这个脚本强制开启全景声再看看返回内容

[CloudEagle99]

要不试试这个脚本强制开启全景声

[WhiteTeal55]

#5817