remove pgs when ass exists

README.md

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+# Todo
+[ ] Investigate using mkvmerge instead of ffmpeg in Set Subtitle Dispositions By Title to stop increase in file size (https://www.reddit.com/r/ffmpeg/comments/wsogpl/removing_subtitle_track_results_in_a_bigger_file/)
+[ ] Plugin to strip PGA subs if ASS exists
+[ ] Plugin to move first audio track in language to first audio track

Tdarr_Plugin_gabehf_Remove_PGS_If_ASS_Exists.js

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+/* eslint max-len: 0, no-plusplus: ["error", { "allowForLoopAfterthoughts": true }] */
+const details = () => ({
+  id: 'Tdarr_Plugin_gabehf_Remove_PGS_If_ASS_Exists',
+  Stage: 'Pre-processing',
+  Name: 'Remove PGS Subs if ASS Subs Exist',
+  Type: 'Subtitle',
+  Operation: 'Transcode',
+  Description:
+    'Removes all PGS subtitles if any SubStationAlpha subtitles are found in the container.',
+  Version: '1.0',
+  Tags: 'pre-processing,ffmpeg,subtitle only',
+  Inputs: [],
+});
+  // eslint-disable-next-line @typescript-eslint/no-unused-vars
+const plugin = (file, librarySettings, inputs, otherArguments) => {
+  let languages = [];
+  const lib = require('../methods/lib')();
+
+  const response = {
+    processFile: false,
+    preset: '',
+    container: `.${file.container}`,
+    handBrakeMode: false,
+    FFmpegMode: true,
+    reQueueAfter: false,
+    infoLog: '',
+  };
+
+  // Check if file is a video. If it isn't then exit plugin.
+  if (file.fileMedium !== 'video') {
+    // eslint-disable-next-line no-console
+    console.log('File is not video');
+    response.infoLog += '☒File is not video \n';
+    response.processFile = false;
+    return response;
+  }
+
+  // Set up required variables.
+  let ffmpegCommandInsert = '';
+  let subtitleIdx = 0;
+  let convert = false;
+  let assExists = false;
+  let pgsExists = false;
+  let tmpInfoLog = ""
+
+  for (let i = 0; i < file.ffProbeData.streams.length; i++) {
+    try {
+      if (file.ffProbeData.streams[i].codec_type.toLowerCase() === 'subtitle') {
+        // for debug
+        response.infoLog += `☒Subtitle stream 0:s:${subtitleIdx} - ${file.ffProbeData.streams[i].tags.title} - ${file.ffProbeData.streams[i].codec_name} \n`
+        if (file.ffProbeData.streams[i].codec_name.toLowerCase() === 'ass') {
+          assExists = true;
+        } else if (file.ffProbeData.streams[i].codec_name.toLowerCase() === 'hdmv_pgs_subtitle') {
+          pgsExists = true;
+          // prepare to remove pgs subtitle stream
+          ffmpegCommandInsert += `-map -0:s:${subtitleIdx} `;
+          tmpInfoLog += `☒Subtitle stream detected as PGS when SubStationAlpha subtitles exists. Removing subtitle stream 0:s:${subtitleIdx} - ${file.ffProbeData.streams[i].tags.title} - ${file.ffProbeData.streams[i].codec_name}. \n`;
+        }
+        subtitleIdx += 1;
+      }
+    } catch (err) {
+      // Error
+    }
+  }
+
+  // only convert when both types of subs exist
+  convert = pgsExists && assExists;
+
+  // Convert file if convert variable is set to true.
+  if (convert === true) {
+    response.processFile = true;
+    response.preset = `, -map 0 ${ffmpegCommandInsert}-c copy -max_muxing_queue_size 9999`;
+    response.container = `.${file.container}`;
+    response.reQueueAfter = true;
+    response.infoLog += tmpInfoLog;
+  } else {
+    response.processFile = false;
+    response.infoLog += "☑File doesn't contain subtitle tracks that require modification.\n";
+  }
+  return response;
+};
+module.exports.details = details;
+module.exports.plugin = plugin;