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add "captions" as download format

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vitaliibudnyi
2026-02-21 19:06:49 +02:00
committed by Alex Shnitman
parent e24890fd9b
commit 973a87ffc6
4 changed files with 48 additions and 4 deletions
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README.md
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@@ -59,6 +59,7 @@ Certain values can be set via environment variables, using the `-e` parameter on
* __OUTPUT_TEMPLATE_CHANNEL__: The template for the filenames of the downloaded videos when downloaded as a channel. Defaults to `%(channel)s/%(title)s.%(ext)s`. When empty, then `OUTPUT_TEMPLATE` is used.
* __YTDL_OPTIONS__: Additional options to pass to yt-dlp in JSON format. [See available options here](https://github.com/yt-dlp/yt-dlp/blob/master/yt_dlp/YoutubeDL.py#L222). They roughly correspond to command-line options, though some do not have exact equivalents here. For example, `--recode-video` has to be specified via `postprocessors`. Also note that dashes are replaced with underscores. You may find [this script](https://github.com/yt-dlp/yt-dlp/blob/master/devscripts/cli_to_api.py) helpful for converting from command-line options to `YTDL_OPTIONS`.
* __YTDL_OPTIONS_FILE__: A path to a JSON file that will be loaded and used for populating `YTDL_OPTIONS` above. Please note that if both `YTDL_OPTIONS_FILE` and `YTDL_OPTIONS` are specified, the options in `YTDL_OPTIONS` take precedence. The file will be monitored for changes and reloaded automatically when changes are detected.
* UI format __Captions (EN, VTT)__: Downloads subtitles/captions only (no media) by applying yt-dlp options equivalent to `--skip-download --write-subs --write-auto-subs --sub-langs en --sub-format vtt`.
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