extract speaker snippets mit main verknüpft.

2026-06-15 18:01:52 +02:00 · 2025-12-16 15:32:31 +01:00
parent a8c284edd2
commit 0003d99041
5 changed files with 489 additions and 349 deletions
@@ -0,0 +1,95 @@
+
+const ffmpeg = require("fluent-ffmpeg");
+const ffmpegPath = require("ffmpeg-static");
+
+ffmpeg.setFfmpegPath(ffmpegPath);
+
+module.exports = {
+    name: "extract-speaker-snippets",
+    type: "audio",
+    displayname: "Extract Speaker Snippets",
+
+    async function(parameter) {
+        return new Promise(async (resolve, reject) => {
+
+            let output = {}
+
+            console.log("Extract Speaker Snippets\n");
+
+            // Pfade
+            const AUDIO_PATH = parameter.audioPath; // Gesamt-Audio
+            const JSON_PATH = parameter.jsonPath; // json summary
+            const OUTPUT_DIR = path.join(__dirname, "/../../../storage/audio/speakerSnippets");
+
+
+            if (!AUDIO_PATH || !JSON_PATH) {
+                console.error("no audioPath or jsonPath available");
+                return;
+            }
+
+            // Output-Ordner
+            if (!fs.existsSync(OUTPUT_DIR)) {
+                fs.mkdirSync(OUTPUT_DIR, { recursive: true });
+            }
+
+            // JSON laden
+            let entries;
+                try {
+                    entries = JSON.parse(fs.readFileSync(JSON_PATH, "utf8"));
+                } catch (err) {
+                    console.error("JSON reading failed", err);
+                    return;
+                }
+
+                if (!Array.isArray(entries)) {
+                    console.error("JSON is not an Array");
+                    return;
+                }
+
+            // Pro Speaker genau EINEN Satz merken
+            const speakerMap = {};
+
+            for (const item of entries) {
+                if (!speakerMap[item.speaker]) {
+                    speakerMap[item.speaker] = item;
+                }
+            }
+
+            // FFmpeg pro Speaker ausführen (sequenziell)
+            for (const speaker of Object.keys(speakerMap)) {
+                const data = speakerMap[speaker];
+
+                // ms → Sekunden
+                const startSec = data.start / 1000;
+                const durationSec = (data.end - data.start) / 1000;
+
+                if (durationSec <= 0) {
+                    console.log(`invalid times for Speaker ${speaker}`);
+                    continue;
+                }
+
+                const outFile = path.join(OUTPUT_DIR, `speaker_${speaker}.wav`);
+
+                await new Promise((res, rej) => {
+                    ffmpeg(AUDIO_PATH)
+                        .setStartTime(startSec)
+                        .setDuration(durationSec)
+                        .output(outFile)
+                        .on("end", () => {
+                            output[`speaker${speaker}`] = {src: outFile, name: `speaker${speaker}`}
+                            console.log(`Snippet erstellt: speaker_${speaker}.wav`);
+                            res();
+                        })
+                        .on("error", (err) => {
+                            console.error(`FFmpeg Fehler (${speaker})`, err.message);
+                            rej();
+                        })
+                        .run();
+                });
+
+            }
+            resolve(output)
+            console.log("\nAlle Speaker-Snippets erstellt\n");
+        })
+    }
+};