fix(server): use libopus for transcoding (#4102)

* updated audio codec enum

* added migration

* updated api

* fixed enum

* formatting

* simplified migration

server/src/infra/migrations/1694758412194-UpdateOpusCodecToLibopus.ts

@@ -0,0 +1,21 @@
+import { MigrationInterface, QueryRunner } from "typeorm";
+
+export class UpdateOpusCodecToLibopus1694758412194 implements MigrationInterface {
+  name = 'UpdateOpusCodecToLibopus1694758412194'
+
+  public async up(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(`
+                UPDATE system_config
+                SET value = '"libopus"'
+                WHERE key = 'ffmpeg.targetAudioCodec' AND value = '"opus"'
+            `);
+  }
+
+  public async down(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(`
+                UPDATE system_config
+                SET value = '"opus"'
+                WHERE key = 'ffmpeg.targetAudioCodec' AND value = '"libopus"'
+            `);
+  }
+}