Whilest it might be more suited to be posted at Youtube itself, it might be more benefical if this suggestion came from you, or incorporated into a plugin of sorts.
You know tat on Youtube (and/or other video sharing sites). user can jumped its time line by pressing 0-9.
However, this is 'blind' and only after watching the majority does the User have a 'idea' of its index.
My suggestion is that such video clips gets automatically numbered as a new feature, but by default off.
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