fix(audio): ensure full WhatsApp compatibility for audio conversion (libopus, 48kHz, mono)

Author: edisonmartinsmkt

src/api/integrations/channel/whatsapp/whatsapp.baileys.service.ts

@@ -3001,7 +3001,20 @@ export class BaileysStartupService extends ChannelStartupService {
           .noVideo()
           .audioCodec('libopus')
           .addOutputOptions('-avoid_negative_ts make_zero')
+          .audioBitrate('128k')
+          .audioFrequency(48000)
           .audioChannels(1)
+          .outputOptions([
+            '-write_xing', '0',
+            '-compression_level', '10',
+            '-application', 'voip',
+            '-fflags', '+bitexact',
+            '-flags', '+bitexact',
+            '-id3v2_version', '0',
+            '-map_metadata', '-1',
+            '-map_chapters', '-1',
+            '-write_bext', '0'
+          ])
           .pipe(outputAudioStream, { end: true })
           .on('error', function (error) {
             console.log('error', error);