If you missed SPC2014 you can still download all of the session videos using this PowerShell script I lightly modified (just changed the path) from Vlad Catrinescu's script for SPC2012 that he adapted from Todd Klindt's script for Tech-Ed 2012. :) Both of which can be accessed here.
Now, here is the code (just copy, paste, and save as a .ps1):
[Environment]::CurrentDirectory=(Get-Location -PSProvider FileSystem).ProviderPath
$rss = (new-object net.webclient)
# Grab the RSS feed for the MP4 downloads
# SharePoint Conference 2012 Videos
$a = ([xml]$rss.downloadstring("http://channel9.msdn.com/Events/SharePoint-Conference/2014/RSS/mp4"))
# Walk through each item in the feed
$a.rss.channel.item | foreach{
$code = $_.comments.split("/") | select -last 1
# Grab the URL for the MP4 file
$url = New-Object System.Uri($_.enclosure.url)
# Create the local file name for the MP4 download
$file = $code + "-" + $_.creator + "-" + $_.title.Replace(":", "-").Replace("?", "").Replace("/", "-").Replace("<", "") + ".mp4"
# Make sure the MP4 file doesn't already exist
if (!(test-path $file))
{
# Echo out the file that's being downloaded
$file
$wc = (New-Object System.Net.WebClient)
# Download the MP4 file
$wc.DownloadFile($url, $file)
}
}