[Bug] Audio language selection only shows English, ignoring other available dubbed languages

[Calborghete]

Describe the bug

I found an issue with the audio language selection in Parabolic.

When downloading videos that have multiple audio tracks (for example, videos with official dubbed versions in Portuguese, Spanish, and other languages), Parabolic only displays English as the available audio language. The other audio tracks are not listed, even though they are available on the video platform.

As a result, it is impossible to select the correct dubbed language directly within the application.

Steps to reproduce:

Open Parabolic.
Paste the URL of a video that contains multiple audio tracks.
Open the audio/language selection menu.
Observe that only English is available.

Actual behavior:
Only the English audio track is displayed, while all other available languages are ignored.

Additional information:
This issue seems to affect videos that use YouTube's multiple audio tracks feature. It appears that Parabolic is not correctly detecting or exposing the additional audio streams.

Describe the expected result

Parabolic should detect and display all available audio tracks/languages provided by the video, allowing the user to choose the desired language (such as Portuguese, Spanish, French, etc.).

URL

https://youtu.be/ZAkGmkP9j5c?list=PL-uopgYBi65HwiiDR9Y23lomAkGr9mm-S

Download Options

No response

Debugging Information

App: Nickvision Parabolic
Version: 2026.5.0

Operating System: Microsoft Windows 10.0.19043
Deployment Mode: Local
Locale: pt-BR
Running From: C:\Program Files\Nickvision Parabolic\Release
NativeAOT: True

Database encrypted: True
Log path: C:\Users\Domingues\AppData\Local\Nickvision Parabolic\app.log

yt-dlp: 2026.7.4
deno: 2.9.2
ffmpeg: n8.1.1-8-gb21e00eda5-20260524 
aria2: 1.37.0

AllowPreviewUpdates = false
AriaMaxConnectionsPerServer = 16
AriaMinSplitSize = 20
AudioBitrate = 1.7976931348623157E+308
AudioFormatIds = {
  "Video": "BEST_AUDIO",
  "MP4": "BEST_AUDIO",
  "MKV": "BEST_AUDIO",
  "WEBM": "BEST_AUDIO",
  "MOV": "BEST_AUDIO",
  "AVI": "BEST_AUDIO",
  "Audio": "BEST_AUDIO",
  "MP3": "BEST_AUDIO",
  "M4A": "BEST_AUDIO",
  "OPUS": "BEST_AUDIO",
  "FLAC": "BEST_AUDIO",
  "WAV": "BEST_AUDIO",
  "OGG": "BEST_AUDIO"
}
AudioOnlyFileType = 7
CookiesBrowser = 0
CookiesPath = ""
CropAudioThumbnails = false
DownloadImmediately = false
DownloadImmediatelyAsAudio = False
DownloadImmediatelyAsVideo = False
EmbedChapters = false
EmbedMetadata = true
EmbedSubtitles = true
EmbedThumbnails = false
ExportDescription = False
ExportM3U = false
FullFileType = 1
IncludeAutoGeneratedSubtitles = false
IncludeMediaIdInTitle = false
installed_deno_appversion = {
  "BaseVersion": "2.9.2",
  "PreviewLabel": ""
}
installed_yt-dlp_appversion = {
  "BaseVersion": "2026.7.4",
  "PreviewLabel": ""
}
InstalledYtdlpAppVersion = {
    "BaseVersion": "2026.3.17",
    "PreviewLabel": ""
  }
LimitCharacters = true
MaxNumberOfActiveDownloads = 10
NumberTitles = false
OverwriteExistingFiles = true
PostprocessingArguments = []
PostprocessingThreads = 4
PostProcessorArgumentName = ""
PreferredAudioCodec = 5
PreferredSubtitleFormat = 2
PreferredVideoCodec = 3
PreventSuspend = true
ProxyUrl = ""
RemoveSourceData = false
ReverseDownloadOrder = false
SaveFolder = C:\Users\Domingues\Downloads
ShowDisclaimerOnStartup = False
ShowDislcaimerOnStartup = false
SplitChapters = False
SubtitleLanguages = []
Theme = 1
TranslationLanguage = pt_BR
UseAria = true
UsePartFiles = false
VideoFormatIds = {
  "Video": "95",
  "MP4": "136",
  "MKV": "BEST_VIDEO",
  "WEBM": "BEST_VIDEO",
  "MOV": "BEST_VIDEO",
  "AVI": "BEST_VIDEO",
  "Audio": "NONE_VIDEO",
  "MP3": "NONE_VIDEO",
  "M4A": "NONE_VIDEO",
  "OPUS": "NONE_VIDEO",
  "FLAC": "NONE_VIDEO",
  "WAV": "NONE_VIDEO",
  "OGG": "NONE_VIDEO"
}
VideoOnlyFileType = 1
VideoResolution = {
    "Width": 2147483647,
    "Height": 2147483647
  }
WindowGeometry = {
  "Height": 876,
  "IsMaximized": true,
  "Width": 1616,
  "X": -8,
  "Y": -8
}
YouTubeSponsorBlock = false
YtdlpDiscoveryArgs = ""
YtdlpDownloadArgs = ""

Additional context

No response

[n0f4c3]

Hello after checking on my end, this is not a bug. It appears that YouTube limits subtitle/audio languages to the video's default language when Parabolic is not authenticated with a YouTube account. To access all available languages, you need to provide Parabolic with your browser cookies so it can identify itself as you — once authenticated, the other available languages for the video will appear.

However, I would recommend only enabling cookie authentication when necessary for videos that require it, rather than keeping it enabled permanently, as using it too frequently could potentially flag your YouTube account.