Is there a way to obtain a thumbnail from a video in Lightroom?

Question

Is there a way to obtain a thumbnail from a video in Lightroom? i.e. a small jpeg file.

Answer 1

I just remembered that there is an undocumented module LrPhotoPictureView:
http://forums.adobe.com/message/4140432#4140432
In a quick test, it shows a thumbnail for .mov files in the catalog:
Shows a 400 x 400 thumbnail for the selected file.
local Require = require 'Require'.path ("../common")
local Debug = require 'Debug'.init ()
require 'strict'
local LrApplication = import 'LrApplication'
local LrDialogs = import 'LrDialogs'
local LrFunctionContext = import 'LrFunctionContext'
local LrPhotoPictureView = import 'LrPhotoPictureView'
local LrView = import 'LrView'
local showErrors = Debug.showErrors
local function main (context)
    local f = LrView.osFactory()
    local catalog = LrApplication.activeCatalog ()
    local photo = catalog:getTargetPhoto ()
    if #photo == nil then
        LrDialogs.message ("No photo selected")
        return
        end
    local pictureView = LrPhotoPictureView.makePhotoPictureView ({
          width = 400, height = 400, photo = catalog:getTargetPhoto ()})
    local result = LrDialogs.presentModalDialog {
        title = "Thumbnail test", contents = f:column {
            f:static_text {title = photo:getFormattedMetadata ("fileName")},
            pictureView}}
    end
LrFunctionContext.postAsyncTaskWithContext ("test",
    showErrors (function (context) main (context) end))