web/save: add support for audio bitrate functionality

web/i18n/en/settings.json

@@ -49,15 +49,19 @@
     "audio.format.ogg": "ogg",
     "audio.format.wav": "wav",
     "audio.format.opus": "opus",
-    "audio.format.description": "every format but \"best\" is converted, meaning that they're lossy. if preferred format matches best available audio, it won't be converted.",
+    "audio.format.description": "all formats but \"best\" are converted, meaning that there'll be some quality loss. if preferred format matches best available audio, it won't be converted.",
+
+    "audio.bitrate": "audio bitrate",
+    "audio.bitrate.kbps": "kb/s",
+    "audio.bitrate.description": "preferred bitrate to use when converting audio. final perceived quality may differ based on the format.",
 
     "audio.youtube.dub": "youtube",
     "audio.youtube.dub.title": "use browser language for dubbed videos",
     "audio.youtube.dub.description": "works even if cobalt isn't translated to your language.",
 
     "audio.tiktok.original": "tiktok",
-    "audio.tiktok.original.title": "use original sound",
-    "audio.tiktok.original.description": "downloads original sound used in the post without any additional changes by the post's author.",
+    "audio.tiktok.original.title": "download original sound",
+    "audio.tiktok.original.description": "if enabled, cobalt will download the sound from the post without any changes by the post's author.",
 
     "metadata.filename": "filename style",
     "metadata.filename.classic": "classic",

web/src/lib/api/api.ts

@@ -16,6 +16,7 @@ const request = async (url: string) => {
 
         downloadMode: saveSettings.downloadMode,
 
+        audioBitrate: saveSettings.audioBitrate,
         audioFormat: saveSettings.audioFormat,
         tiktokFullAudio: saveSettings.tiktokFullAudio,
         youtubeDubBrowserLang: saveSettings.youtubeDubBrowserLang,

web/src/lib/settings/defaults.ts

@@ -15,6 +15,7 @@ const defaultSettings: CobaltSettings = {
         reduceTransparency: false,
     },
     save: {
+        audioBitrate: "256",
         audioFormat: "mp3",
         disableMetadata: false,
         downloadMode: "auto",

web/src/lib/types/settings.ts

@@ -2,6 +2,7 @@ import languages from '$i18n/languages.json';
 import type { RecursivePartial } from './generic';
 
 export const themeOptions = ["auto", "light", "dark"] as const;
+export const audioBitrateOptions = ["320", "256", "128", "96", "64"] as const;
 export const audioFormatOptions = ["best", "mp3", "ogg", "wav", "opus"] as const;
 export const downloadModeOptions = ["auto", "audio", "mute"] as const;
 export const filenameStyleOptions = ["classic", "basic", "pretty", "nerdy"] as const;
@@ -32,6 +33,7 @@ type CobaltSettingsProcessing = {
 
 type CobaltSettingsSave = {
     audioFormat: typeof audioFormatOptions[number],
+    audioBitrate: typeof audioBitrateOptions[number],
     disableMetadata: boolean,
     downloadMode: typeof downloadModeOptions[number],
     filenameStyle: typeof filenameStyleOptions[number],

web/src/routes/settings/audio/+page.svelte

@@ -1,7 +1,7 @@
 <script lang="ts">
     import { t } from "$lib/i18n/translations";
 
-    import { audioFormatOptions } from "$lib/types/settings";
+    import { audioFormatOptions, audioBitrateOptions } from "$lib/types/settings";
 
     import SettingsCategory from "$components/settings/SettingsCategory.svelte";
     import Switcher from "$components/buttons/Switcher.svelte";
@@ -23,6 +23,21 @@
     </Switcher>
 </SettingsCategory>
 
+
+<SettingsCategory sectionId="audio-bitrate" title={$t("settings.audio.bitrate")}>
+    <Switcher big={true} description={$t("settings.audio.bitrate.description")}>
+        {#each audioBitrateOptions as value}
+            <SettingsButton
+                settingContext="save"
+                settingId="audioBitrate"
+                settingValue={value}
+            >
+                {value}{$t("settings.audio.bitrate.kbps")}
+            </SettingsButton>
+        {/each}
+    </Switcher>
+</SettingsCategory>
+
 <SettingsCategory sectionId="youtube" title={$t("settings.audio.youtube.dub")}>
     <SettingsToggle
         settingContext="save"