Misty De Méo
49d6c5d830
YouTube has started upscaling older videos that are below a certain resolution. yt-dlp identifies these via the `-sr` suffix in the format ID. It's probably a good idea to avoid downloading these, and just focus on the originals instead. yt-dlp's `--dump-single-json` option ignores the `--format` argument, so we can't use that to filter out super resolution videos. Instead, we'll need to check every format we get while iterating and skip it if it ends with `-sr`. See: https://alexwlchan.net/til/2025/ignore-ai-scaled-videos/?ref=mastodon
Heritrix
Introduction
Heritrix is the Internet Archive's open-source, extensible, web-scale, archival-quality web crawler project. Heritrix (sometimes spelled heretrix, or misspelled or missaid as heratrix/heritix/heretix/heratix) is an archaic word for heiress (woman who inherits). Since our crawler seeks to collect and preserve the digital artifacts of our culture for the benefit of future researchers and generations, this name seemed apt.
Crawl Operators!
Heritrix is designed to respect the robots.txt exclusion directives and META nofollow tags. Please consider the
load your crawl will place on seed sites and set politeness policies accordingly. Also, always identify your crawl with contact information in the User-Agent so sites that may be adversely affected by your crawl can contact you or adapt their server behavior accordingly.
Documentation
Developer Documentation
- Developer Manual
- REST API documentation
- JavaDoc: engine, modules, commons, contrib
Latest Releases
Information about releases can be found here.
License
Heritrix is free software; you can redistribute it and/or modify it under the terms of the Apache License, Version 2.0
Some individual source code files are subject to or offered under other licenses. See the included LICENSE.txt file for more information.
Heritrix is distributed with the libraries it depends upon. The libraries can be found under the lib directory in the release distribution, and are used under the terms of their respective licenses, which are included alongside the libraries in the lib directory.