Cleanup sounds (switch to mp3, encode at lower bitrate).' (#12507)

* Reencode mp3 sounds at lower bitrate, mono.
* Encode wav sounds as mp3.
* Remove unused sound file.
* Add opus encoded sounds.
* Add a script to encode sounds.

react/features/base/participants/sounds.ts

@@ -2,10 +2,10 @@
  * The name of the bundled sound file which will be played when new participant
  * joins the conference.
  */
-export const PARTICIPANT_JOINED_FILE = 'joined.wav';
+export const PARTICIPANT_JOINED_FILE = 'joined.mp3';
 
 /**
  * The name of the bundled sound file which will be played when any participant
  * leaves the conference.
  */
-export const PARTICIPANT_LEFT_FILE = 'left.wav';
+export const PARTICIPANT_LEFT_FILE = 'left.mp3';

react/features/chat/sounds.ts

@@ -4,4 +4,4 @@
  *
  * @type {string}
  */
-export const INCOMING_MSG_SOUND_FILE = 'incomingMessage.wav';
+export const INCOMING_MSG_SOUND_FILE = 'incomingMessage.mp3';

react/features/device-selection/components/AudioOutputPreview.js

@@ -5,7 +5,7 @@ import React, { Component } from 'react';
 import { translate } from '../../base/i18n/functions';
 import Audio from '../../base/media/components/Audio';
 
-const TEST_SOUND_PATH = 'sounds/ring.wav';
+const TEST_SOUND_PATH = 'sounds/ring.mp3';
 
 /**
  * The type of the React {@code Component} props of {@link AudioOutputPreview}.

react/features/invite/sounds.js

@@ -16,13 +16,13 @@ export const sounds = new Map([
      * The name of the sound file which will be played when outgoing call is
      * expired.
      */
-    [ OUTGOING_CALL_EXPIRED_SOUND_ID, { file: 'rejected.wav' } ],
+    [ OUTGOING_CALL_EXPIRED_SOUND_ID, { file: 'rejected.mp3' } ],
 
     /**
      * The name of the sound file which will be played when outgoing call is
      * rejected.
      */
-    [ OUTGOING_CALL_REJECTED_SOUND_ID, { file: 'rejected.wav' } ],
+    [ OUTGOING_CALL_REJECTED_SOUND_ID, { file: 'rejected.mp3' } ],
 
     /**
      * The name of the sound file which will be played when the status of an
@@ -31,7 +31,7 @@ export const sounds = new Map([
     [
         OUTGOING_CALL_RINGING_SOUND_ID,
         {
-            file: 'outgoingRinging.wav',
+            file: 'outgoingRinging.mp3',
             options: { loop: true }
         }
     ],
@@ -40,5 +40,5 @@ export const sounds = new Map([
      * The name of the sound file which will be played when outgoing call is
      * started.
      */
-    [ OUTGOING_CALL_START_SOUND_ID, { file: 'outgoingStart.wav' } ]
+    [ OUTGOING_CALL_START_SOUND_ID, { file: 'outgoingStart.mp3' } ]
 ]);

react/features/settings/components/web/audio/SpeakerEntry.js

@@ -7,7 +7,7 @@ import logger from '../../../logger';
 import AudioSettingsEntry from './AudioSettingsEntry';
 import TestButton from './TestButton';
 
-const TEST_SOUND_PATH = 'sounds/ring.wav';
+const TEST_SOUND_PATH = 'sounds/ring.mp3';
 
 /**
  * The type of the React {@code Component} props of {@link SpeakerEntry}.

resources/encode-sound.sh

@@ -0,0 +1,50 @@
+#!/bin/bash
+
+usage() {
+  echo "Usage: $0 [--mp3] [--opus] [--stereo] <input file ...>"
+  exit 1
+}
+
+for arg in "$@"; do
+  case "$arg" in
+    --stereo)
+    STEREO=true
+    shift
+    ;;
+    --mp3)
+    MP3=true
+    shift
+    ;;
+    --opus)
+    OPUS=true
+    shift
+    ;;
+  esac
+done
+
+if [ $# -lt 1 ] ;then
+  usage
+fi
+
+if [ "$MP3" != "true" ] ;then
+  if [ "$OPUS" != "true" ] ;then
+    echo "At least one of --mp3 or --opus is required"
+    usage
+  fi
+fi
+
+echo "STEREO=$STEREO MP3=$MP3 OPUS=$OPUS"
+
+AC1="-ac 1"
+if [ "$STEREO" = "true" ] ;then
+  AC1=""
+fi
+
+for i in "$@" ;do
+  if [ "$MP3" = "true" ] ;then
+    ffmpeg -i "$i" -codec:a libmp3lame -qscale:a 9 -map_metadata -1 $AC1 "${i%.*}.mp3"
+  fi
+  if [ "$OPUS" = "true" ] ;then
+    ffmpeg -i "$i" -c:a libopus -b:a 30k -vbr on -compression_level 10 -map_metadata -1 $AC1 "${i%.*}.opus"
+  fi
+done

sounds/README.md

@@ -0,0 +1,2 @@
+We are trying to keep these files relatively small. Use `resources/encode-sound.sh` to
+encode a file in the same way (use --stereo if stereo is needed).