[Feature] exclude youtube short vids

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I get the rss from several YT channels and some are shordt vids, which seems a new YT feature. I'm not interested in them less than 1 minute long.

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I'd like not to download/list them, exclude them from download/list. I would like to ignore videos shorts like https://www.youtube.com/watch?v=NtxddL08ZOg

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None so far. I'm puzzled at this moment.

**Additional context**
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No implementation files, tests, or entry points are named. Start by reviewing the 21-comment discussion and locating the extension responsible for the affected YouTube-channel RSS feeds; clarify how short videos are identified and excluded from both downloads and listings, then verify the behavior with representative feeds.

Written by the indexing model from the issue text.