Repository: yt-dlp
Issue: [SVTPlay] Downloading subs leads to error 403
Labels: geo-blocked,site-bug,triage

### 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 a **supported** site is broken
- [X] I've verified that I'm running yt-dlp version **2023.03.04** ([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

Sweden

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

One certain show on SVTPlay leads to a 403 error when downloading subtitles.
I have verified that the show plays fine with subtitles in the browser (same IP address, no credentials).
I have verified that other shows allow downloading subtitles, the error seems to be specific to this show.

Downloading the show without subtitles works fine.

### Provide verbose output that clearly demonstrates the problem

- [X] Run **your** yt-dlp command with **-vU** flag added (`yt-dlp -vU <your command line>`)
- [x] 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
[debug] Command-line config: ['-vU', '--all-subs', '--merge-output-format', 'mkv', 'https://www.svtplay.se/video/8ypxAr1/spidey-och-hans-fantastiska-vanner/1-spidey-upphojt-till-tre?id=8ypxAr1']
[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@2023.03.04 [392389b7d] (zip)
[debug] Python 3.10.6 (CPython x86_64 64bit) - Linux-5.19.0-35-generic-x86_64-with-glibc2.35 (OpenSSL 3.0.2 15 Mar 2022, glibc 2.35)
[debug] exe versions: ffmpeg 4.4.2 (setts), ffprobe 4.4.2
[debug] Optional libraries: Cryptodome-3.17, certifi-2020.06.20, secretstorage-3.3.1, sqlite3-2.6.0
[debug] Proxy map: {}
[debug] Loaded 1786 extractors
[debug] Fetching release info: https://api.github.com/repos/yt-dlp/yt-dlp/releases/latest
Available version: stable@2023.03.04, Current version: stable@2023.03.04
Current Build Hash: 91cad9f121c1f6f0a81b747415c46ecba0ff331ed38cc6433040b4ac7b6e15ca
yt-dlp is up to date (stable@2023.03.04)

[info] Writing video subtitles to: Spidey upphöjt till tre [8ypxAr1].sv.vtt
[debug] Invoking http downloader on "https://svt-vod-secure-2b.akamaized.net/d0/secure/20230304/f03b2515-a735-4b77-9ba4-181233da9067/text/text-closed.vtt"
ERROR: Unable to download video subtitles for 'sv': HTTP Error 403: Forbidden
```