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feat(dl): add -fsl/--forced-s-lang to filter forced subtitles by language

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imSp4rky
2026-08-03 09:27:40 -06:00
parent b580ccdd42
commit 4e1ccf3230
11 changed files with 112 additions and 6 deletions
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docs/guide/subtitles.md
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@@ -70,6 +70,7 @@ Subtitle selection happens through `dl` flags. The most important is language se
| `-sl`, `--s-lang` | Language(s) wanted for subtitles. Defaults to `all`. |
| `--require-subs` | Require these languages to exist; if present, download **all** subtitles. Cannot be combined with `--s-lang`. |
| `-fs`, `--forced-subs` | Include forced subtitle tracks (excluded by default). |
| `-fsl`, `--forced-s-lang` | Language(s) wanted for forced subtitles; implies `-fs`. |
| `--exact-lang` | Exact language matching, with no regional variants. |
| `-S`, `--subs-only` | Download only subtitle tracks. |
| `-ns`, `--no-subs` | Do not download subtitle tracks at all. |
@@ -121,6 +122,18 @@ default**. Add `-fs` / `--forced-subs` to include them:
unshackle dl --s-lang en --forced-subs EXAMPLE 81234567
```
`-fs` keeps forced tracks in every selected language. If you only want forced tracks
in certain languages, use `-fsl` / `--forced-s-lang` instead. It implies `-fs`, so
you do not need both:
```shell title="All full subtitles, but only the English forced track"
unshackle dl --s-lang all --forced-s-lang en EXAMPLE 81234567
```
If you pass both flags, `-fsl` wins and keeps only forced tracks in its languages.
It also understands `orig` (the title's original language) and `all` (every forced
track, same as plain `-fs`).
## Track types: forced, SDH, and CC
Every subtitle track carries flags describing what kind of captions it holds. These