How to get subtitle in original audio language without translation ?

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• I’m asking a question and not reporting a bug/feature request
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Question

I want to download subtitle of original audio without translation. This is the one I get on screen by default when I press de CC button.

With the key writeautomaticsub I get a translation in English. I want it to, but I can’t find the way to get the text of original language.

Thank you for your help.

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No response

[Bricio]

Pukkadan I think I understand him.

When downloading captions yt-dlp always downloads translated to english when is available. Even if you don’t tell yt-dlp to do that.

https://github.com/yt-dlp/yt-dlp/blob/455a15e2dcf29b4712d92a89a95ad5f3ddad69a1/yt_dlp/YoutubeDL.py#L2669-L2670

[debug] Invoking downloader on "https://www.youtube.com/api/timedtext?v=tQqDBySHYlc&asr_langs=de%2Cen%2Ces%2Cfr%2Cid%2Cit%2Cja%2Cko%2Cnl%2Cpt%2Cru%2Ctr%2Cvi&caps=asr&exp=xctw&xoaf=5&hl=en&ip=0.0.0.0&ipbits=0&expire=1644532828&sparams=ip%2Cipbits%2Cexpire%2Cv%2Casr_langs%2Ccaps%2Cexp%2Cxoaf&signature=99999999999999999999999999999999999999999999999999999999999999999999999999999999999&key=yt8&kind=asr&lang=pt&tlang=en&fmt=vtt"

The YT behavior is captions generate on original language, it only translate if you tell YT to translate.

So, to match YT behavior, default requested langs should be the one returned on JSON not hard coded as ‘en’

  "captions": {
    "playerCaptionsTracklistRenderer": {
      "captionTracks": [
        {
          "baseUrl": "https://www.youtube.com/api/timedtext?v=tQqDBySHYlc&asr_langs=de,en,es,fr,id,it,ja,ko,nl,pt,ru,tr,vi&caps=asr&exp=xctw&xoaf=5&hl=en&ip=0.0.0.0&ipbits=0&expire=1644533677&sparams=ip,ipbits,expire,v,asr_langs,caps,exp,xoaf&signature=9999999999999999999999999999999999999999999999999999999999999999999999999999999999&key=yt8&kind=asr&lang=pt&fmt=srv3",
          "name": {
            "runs": [
              {
                "text": "Portuguese (auto-generated)"
              }
            ]
          },
          "vssId": "a.pt",
          "languageCode": "pt",
          "kind": "asr",
          "isTranslatable": true
        }
      ],
      "audioTracks": [
        {
          "captionTrackIndices": [
            0
          ]
        }
      ],
      "defaultAudioTrackIndex": 0
    }
  },

[nastia-diaphan]

yt-dlp --cookies cookies.txt --sub-langs 'en.*,.*orig' --write-auto-subs https://www.youtube.com/watch?v=tQqDBySHYlc work as expected. Many thanks again.

'subtitleslangs': ['en.*','.*orig'],
'writeautomaticsub': True,

Work as expected too. Thank you

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Very sorry for the video sample. I even not watched it.