Batch Export Video Frames

"Would I be right in sugggesting to make 1:1 previews before extracting?"

I don't think so.  I just did a quick test on freshly imported 3840 x 2160 videos, and doing Library > Previews > Build 1:1 Previews produced the message "No 1:1 previews were built". 

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More thoughts-

@johnrellis You might know-Would I be right in sugggesting to make 1:1 previews before extracting?

"http://regex.info/blog/lightroom-goodies/preview-extraction"

Good solution!

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If I remember correctly, in the past, I used the Plugin from Jeffrey Friedl-

http://regex.info/blog/lightroom-goodies/preview-extraction

Just testing now with this method-

1) Selected a folder and filtered for videos

2) [Ctrl+A] to select all videos

3) Ran the Plugin from  MENU: Liibrary> Plugin Extras> Extract Preview Images

4) Result is a folder of JPGs that I can now import to the Catalog (& Rename, keyword, etc)-

Unfortunately, there isn't any easy way to automate this. Adobe didn't make this functionality available to plugins either. I think the best you could do is use a keyboard macro utility (e.g. Autohotkey on Windows), which will necessarily be fussy and take a bit to make work.

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