Incorrect audio language on some videos

[jim3692]

Official Instance

• The bug is reproducible on the official hosted instance, or is API-related.

Describe the bug

It looks like that in some videos there is (mistakenly?) a second English audio track. In the case of the video in the reproduction steps, one has the following info in its API response (filtered output):

{
  "audioTrackId": "en-US.4",
  "audioTrackName": "English (United States) original",
  "audioTrackType": "ORIGINAL"
}

and the other English track has this info:

{
  "audioTrackId": "en.3",
  "audioTrackName": "English",
  "audioTrackType": "DUBBED"
}

Trying in official YouTube, it seems that the non-original English audio track is indeed not English. However, in Piped only one of those tracks appear in the list. After some digging, I found this part of the code, which should prioritize the original, over the dubbed track and/or not use substr(0, 2) as it results to "en" for both tracks:

Piped/src/utils/DashUtils.js

Lines 69 to 76 in 6275202

	const adapSet = {
	_id: mimeAudioObj.audioTrackId,
	_lang: mimeAudioObj.audioTrackId?.substr(0, 2),
	_mimeType: mimeAudioObj.mimeType,
	_startWithSAP: "1",
	_subsegmentAlignment: "true",
	Representation: [],
	};

To Reproduce

1. Go to https://piped.video/watch?v=iWWWyG5ZwG8
2. Select the English language
3. It's not English

Expected behavior

It should be English

Logs/Errors

No response

Browser, and OS with Version.

Firefox 122.0.1 on Debian 12

Additional context

No response

[arisuv]

substr(0, 2) should prevent duplication of audio not prioritize the original audio, as I understood.