Tdarr_Plugins/Community/Tdarr_Plugin_MC93_Migz5ConvertAudio.js

/* eslint-disable */
function details() {
  return {
    id: "Tdarr_Plugin_MC93_Migz5ConvertAudio",
    Stage: "Pre-processing",
    Name: "Migz-Convert audio streams",
    Type: "Audio",
    Operation: "Transcode",
    Description: `This plugin can convert any 2.0 audio track/s to AAC and can create downmixed audio tracks. \n\n`,
    Version: "2.2",
    Link: "",
    Tags: "pre-processing,ffmpeg,audio only,configurable",
    Inputs: [
      {
        name: "aac_stereo",
        tooltip: `Specify if any 2.0 audio tracks should be converted to aac for maximum compatability with devices. Optional.
	            \\nExample:\\n
	            true

	            \\nExample:\\n
	            false`,
      },
      {
        name: "downmix",
        tooltip: `Specify if downmixing should be used to create extra audio tracks. I.e if you have an 8ch but no 2ch or 6ch, create the missing audio tracks from the 8 ch. Likewise if you only have 6ch, create the missing 2ch from it. Optional.
	            \\nExample:\\n
	            true

	            \\nExample:\\n
	            false`,
      },
    ],
  };
}

function plugin(file, librarySettings, inputs) {
  var response = {
    processFile: false,
    container: "." + file.container,
    handBrakeMode: false,
    FFmpegMode: true,
    reQueueAfter: true,
    infoLog: "",
  };

  //  Check if both inputs.aac_stereo AND inputs.downmix have been left empty. If they have then exit plugin.
  if (inputs && inputs.aac_stereo == "" && inputs.downmix == "") {
    response.infoLog +=
      "☒Neither aac_stereo or downmix options have been configured within plugin settings, please configure required options. Skipping this plugin. \n";
    response.processFile = false;
    return response;
  }

  // Check if file is a video. If it isn't then exit plugin.
  if (file.fileMedium !== "video") {
    console.log("File is not video");
    response.infoLog += "☒File is not video. \n";
    response.processFile = false;
    return response;
  }

  // Set up required variables.
  var ffmpegCommandInsert = "";
  var audioIdx = 0;
  var has2Channel = false;
  var has6Channel = false;
  var has8Channel = false;
  var convert = false;

  // Go through each stream in the file.
  for (var i = 0; i < file.ffProbeData.streams.length; i++) {
    try {
      // Go through all audio streams and check if 2,6 & 8 channel tracks exist or not.
      if (file.ffProbeData.streams[i].codec_type.toLowerCase() == "audio") {
        if (file.ffProbeData.streams[i].channels == "2") {
          has2Channel = true;
        }
        if (file.ffProbeData.streams[i].channels == "6") {
          has6Channel = true;
        }
        if (file.ffProbeData.streams[i].channels == "8") {
          has8Channel = true;
        }
      }
    } catch (err) {}
  }

  // Go through each stream in the file.
  for (var i = 0; i < file.ffProbeData.streams.length; i++) {
    // Check if stream is audio.
    if (file.ffProbeData.streams[i].codec_type.toLowerCase() == "audio") {
      // Catch error here incase user left inputs.downmix empty.
      try {
        // Check if inputs.downmix is set to true.
        if (inputs.downmix.toLowerCase() == "true") {
          // Check if file has 8 channel audio but no 6 channel, if so then create extra downmix from the 8 channel.
          if (
            has8Channel == true &&
            has6Channel == false &&
            file.ffProbeData.streams[i].channels == "8"
          ) {
            ffmpegCommandInsert += `-map 0:${i} -c:a:${audioIdx} ac3 -ac 6 -metadata:s:a:${audioIdx} title="5.1 " `;
            response.infoLog +=
              "☒Audio track is 8 channel, no 6 channel exists. Creating 6 channel from 8 channel. \n";
            convert = true;
          }
          // Check if file has 6 channel audio but no 2 channel, if so then create extra downmix from the 6 channel.
          if (
            has6Channel == true &&
            has2Channel == false &&
            file.ffProbeData.streams[i].channels == "6"
          ) {
            ffmpegCommandInsert += `-map 0:${i} -c:a:${audioIdx} aac -ac 2 -metadata:s:a:${audioIdx} title="2.0 " `;
            response.infoLog +=
              "☒Audio track is 6 channel, no 2 channel exists. Creating 2 channel from 6 channel. \n";
            convert = true;
          }
        }
      } catch (err) {}

      // Catch error here incase user left inputs.downmix empty.
      try {
        // Check if inputs.aac_stereo is set to true.
        if (inputs.aac_stereo.toLowerCase() == "true") {
          // Check if codec_name for stream is NOT aac AND check if channel ammount is 2.
          if (
            file.ffProbeData.streams[i].codec_name != "aac" &&
            file.ffProbeData.streams[i].channels == "2"
          ) {
            ffmpegCommandInsert += `-c:a:${audioIdx} aac `;
            response.infoLog +=
              "☒Audio track is 2 channel but is not AAC. Converting. \n";
            convert = true;
          }
        }
      } catch (err) {}
      audioIdx++;
    }
  }

  // Convert file if convert variable is set to true.
  if (convert == true) {
    response.processFile = true;
    response.preset = `, -map 0 -c:v copy -c:a copy ${ffmpegCommandInsert} -strict -2 -c:s copy -max_muxing_queue_size 9999 `;
  } else {
    response.infoLog += "☑File contains all required audio formats. \n";
    response.processFile = false;
  }
  return response;
}
module.exports.details = details;
module.exports.plugin = plugin;