Repository: yt-dlp
Issue: ABC iView (AU) yt-dlp outputs warning about not extracting subs
Labels: geo-blocked,site-bug,patch-available

### DO NOT REMOVE OR SKIP THE ISSUE TEMPLATE

- [X] I understand that I will be **blocked** if I *intentionally* remove or skip any mandatory\* field

### Checklist

- [X] I'm reporting that yt-dlp is broken on a **supported** site
- [X] I've verified that I'm running yt-dlp version **2023.09.24** ([update instructions](https://github.com/yt-dlp/yt-dlp#update)) or later (specify commit)
- [X] I've checked that all provided URLs are playable in a browser with the same IP and same login details
- [X] I've checked that all URLs and arguments with special characters are [properly quoted or escaped](https://github.com/yt-dlp/yt-dlp/wiki/FAQ#video-url-contains-an-ampersand--and-im-getting-some-strange-output-1-2839-or-v-is-not-recognized-as-an-internal-or-external-command)
- [X] I've searched [known issues](https://github.com/yt-dlp/yt-dlp/issues/3766) and the [bugtracker](https://github.com/yt-dlp/yt-dlp/issues?q=) for similar issues **including closed ones**. DO NOT post duplicates
- [X] I've read the [guidelines for opening an issue](https://github.com/yt-dlp/yt-dlp/blob/master/CONTRIBUTING.md#opening-an-issue)
- [X] I've read about [sharing account credentials](https://github.com/yt-dlp/yt-dlp/blob/master/CONTRIBUTING.md#are-you-willing-to-share-account-details-if-needed) and I'm willing to share it if required

### Region

Australia

### Provide a description that is worded well enough to be understood

When downloading from ABC iView, it does not download the subtitles that are present otherwise (verified on the website). Example URL: https://iview.abc.net.au/video/DR2106V003S00

Error is:
```
WARNING: [abc.net.au:iview] Ignoring subtitle tracks found in the HLS manifest; if any subtitle tracks are missing, please report this issue on  https://github.com/yt-dlp/yt-dlp/issues?q= , filling out the appropriate issue template. Confirm you are on the latest version using  yt-dlp -U
```

### Provide verbose output that clearly demonstrates the problem

- [X] Run **your** yt-dlp command with **-vU** flag added (`yt-dlp -vU <your command line>`)
- [ ] If using API, add `'verbose': True` to `YoutubeDL` params instead
- [X] Copy the WHOLE output (starting with `[debug] Command-line config`) and insert it below

### Complete Verbose Output

```shell
$ yt-dlp -vU https://iview.abc.net.au/video/DR2106V003S00
[debug] Command-line config: ['-vU', 'https://iview.abc.net.au/video/DR2106V003S00']
[debug] Encodings: locale UTF-8, fs utf-8, pref UTF-8, out utf-8, error utf-8, screen utf-8
[debug] yt-dlp version stable@2023.09.24 [088add956] (pip)
[debug] Python 3.11.5 (CPython arm64 64bit) - macOS-14.0-arm64-arm-64bit (OpenSSL 3.1.3 19 Sep 2023)
[debug] exe versions: ffmpeg 6.0 (setts), ffprobe 6.0, rtmpdump 2.4
[debug] Optional libraries: Cryptodome-3.19.0, brotli-1.1.0, certifi-2023.07.22, mutagen-1.47.0, sqlite3-3.43.1, websockets-11.0.3, xattr-0.10.1
[debug] Proxy map: {}
[debug] Loaded 1886 extractors
[debug] Fetching release info: https://api.github.com/repos/yt-dlp/yt-dlp/releases/latest
Available version: stable@2023.09.24, Current version: stable@2023.09.24
yt-dlp is up to date (stable@2023.09.24)
[debug] Using fake IP 1.129.162.67 (AU) as X-Forwarded-For
[abc.net.au:iview] Extracting URL: https://iview.abc.net.au/video/DR2106V003S00
[abc.net.au:iview] DR2106V003S00: Downloading JSON metadata
[abc.net.au:iview] DR2106V003S00: Downloading webpage
[abc.net.au:iview] DR2106V003S00: Downloading m3u8 information
WARNING: [abc.net.au:iview] Ignoring subtitle tracks found in the HLS manifest; if any subtitle tracks are missing, please report this issue on  https://github.com/yt-dlp/yt-dlp/issues?q= , filling out the appropriate issue template. Confirm you are on the latest version using  yt-dlp -U
[debug] Formats sorted by: hasvid, ie_pref, lang, quality, res, fps, hdr:12(7), vcodec:vp9.2(10), channels, acodec, size, br, asr, proto, vext, aext, hasaud, source, id
[debug] Default format spec: bestvideo*+bestaudio/best
[info] DR2106V003S00: Downloading 1 format(s): hls-2332
[debug] Invoking hlsnative downloader on "https://iview-vod-hls.akamaized.net/prod/dr2/DR2106V003S00MA1D1/20230923022715/hls/6000000/hdntl=exp=1695641565~acl=%2f*~data=hdntl~hmac=58e1daf8719ce2d6364ac61542c5cd641378ee347320302b6117eef81e09cbb0/stream.m3u8?aka_me_session_id=AAAAAAAAAADdbxFlAAAAAImSTVgU+o6IBCnWasRT0Qt2rs2HWDYQrl4AXMRVBp0vg76xnuRhF2kL60AwaGYunerVVVL6DEt8&aka_media_format_type=hls"
[hlsnative] Downloading m3u8 manifest
[hlsnative] Total fragments: 308
[download] Destination: Series 2 Ep 3 Greed and Fear [DR2106V003S00].mp4
[download] 100% of  784.42MiB in 00:12:33 at 1.04MiB/s
[debug] ffprobe command line: ffprobe -hide_banner -show_format -show_streams -print_format json 'file:Series 2 Ep 3 Greed and Fear [DR2106V003S00].mp4'
[debug] ffmpeg command line: ffprobe -show_streams 'file:Series 2 Ep 3 Greed and Fear [DR2106V003S00].mp4'
[FixupM3u8] Fixing MPEG-TS in MP4 container of "Series 2 Ep 3 Greed and Fear [DR2106V003S00].mp4"
[debug] ffmpeg command line: ffmpeg -y -loglevel repeat+info -i 'file:Series 2 Ep 3 Greed and Fear [DR2106V003S00].mp4' -map 0 -dn -ignore_unknown -c copy -f mp4 -bsf:a aac_adtstoasc -movflags +faststart 'file:Series 2 Ep 3 Greed and Fear [DR2106V003S00].temp.mp4'
```