746370ef9a
* docs(quick): Stale Sphinx ref link target name Not sure how I missed this in my local testing, but this should have been a part a previous PR. Refs #1304 * docs(usage): Stale CLI options help output From [merged PR feedback](https://github.com/jmbannon/ytdl-sub/pull/1305#discussion_r2304503286). Refs #1305
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Debugging
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=========
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Run with ``--log-level debug`` to show all log messages, often too much information for
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normal operation but useful when investigating a specific problem.
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:ref:`ytdl-sub builds on yt-dlp <introduction:motivation>`, which is in itself a complex
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tool. It performs an intricate and fragile task, web scraping, which in turn :ref:`is
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subject to the whims of external services <guides/getting_started/index:minimize the
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work to only what's necessary>` outside its control. Finally, because :ref:`ytdl-sub is
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a lower-level tool <guides/getting_started/index:prerequisite knowledge>`, many users,
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if not most, will have problems getting their configuration working and it can be
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difficult to determine when the root cause is their configuration, just a limit imposed
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by the services, or, least likely, a bug in one of the tools involved.
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To expedite resolution and conserve the limited resources of both yourself and
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volunteers, do as much investigation yourself as you can:
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#. Start by assuming the issue is your configuration:
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Review :doc:`the guides <./guides/index>` to confirm your understanding. Increase
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output using the ``--log-level`` CLI option and read the output carefully for hints
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and clues. Use those clues to `search the docs`_. Read :doc:`the reference docs
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<./config_reference/index>` of the involved ``ytdl-sub`` components.
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#. Try to determine if the issue is happening in ``yt-dlp`` or ``ytdl-sub``:
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The user's configuration tells ``ytdl-sub`` how to run ``yt-dlp``. ``yt-dlp`` handles
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all the web scraping and downloading. ``ytdl-sub`` then assembles the files and metadata
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produced by ``yt-dlp`` and places them in your library.
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If the issue is happening while scraping or downloading from the external service,
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then it's happening in the running of ``yt-dlp``. Look for output showing failed
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downloads, ``403`` errors, or signs of throttles. That doesn't mean it's a bug in
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``yt-dlp``, it could be in how your configuration tells ``ytdl-sub`` to run
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``yt-dlp`` or limits imposed by the service that are constantly changing, but you may
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be able to find answers from other ``yt-dlp`` users running into similar issues.
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See `the yt-dlp known issues`_ and `search their issues`_ for clues and hints. Read
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the comments for more understanding, workarounds, and maybe even fixes. If you still
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don't understand the cause after reading everything you can find there, try to find
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help in `the yt-dlp Discord`_.
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#. If the issue is happening in ``ytdl-sub``, reach out for help:
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Once you've done everything you can to get your configuration working and you've
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determined that the issue isn't happening in ``yt-dlp``, look for answers in
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``ytdl-sub``:
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#. Cut your configuration and subscriptions down to the minimum that reproduces the
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issue.
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#. Run with the ``--log-level debug`` CLI option and copy the full output.
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#. `Search the ytdl-sub issues`_ using clues and hints from the output.
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#. `Open a support post in Discord`_ with those details and all other relevant
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details.
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#. If someone from the Discord discussion directs you to, then `open a new issue`_
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with those same details.
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.. _`the yt-dlp known issues`:
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https://github.com/yt-dlp/yt-dlp/wiki/FAQ#known-issues
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.. _`search their issues`:
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https://github.com/yt-dlp/yt-dlp/issues
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.. _`the yt-dlp Discord`:
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https://discord.gg/H5MNcFW63r
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.. _`search the docs`:
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https://ytdl-sub.readthedocs.io/en/latest/search.html
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.. _`search the ytdl-sub issues`:
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https://github.com/jmbannon/ytdl-sub/issues
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.. _`open a support post in Discord`:
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https://discord.com/channels/994270357957648404/1084886228266127460
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.. _`open a new issue`:
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https://github.com/jmbannon/ytdl-sub/issues/new
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