E: Changed title from transliteration -> transcript...

Requested feature overview description.
Add in section to have transcript of text and possibly other things featured in the image.

Why would it be useful?
With foreign content, this would allow users to quickly google translate content that haven't been translated already as well as easier way to check if exsisting translation is actually proper and not a joke/made up one.

With video content this acts as semi-subtitle of sort (or better yet, as actual subtitles which user can then copy-paste to file and use).

But most importantly, this would greatly help with searching content. I'm certain that everyone will bump into situation where they know what text was in the thing that they are searching, but have no idea what else there was. Right now all they can use to search then is text.

So for example, searching transcript:what's_a_yiff? would turn the following result:
post #1367432
As post pages are indexed by google, this would also immensily help finding content here trough google as well.

What part(s) of the site page(s) are affected?
There would be extra textbox when editing posts and this would show up as collapsed section under description.