After generating a new provisioning profile, this will re-sign and deploy the old YouTube app to an Apple TV

youtube.sh

#!/bin/bash

# npm install -g applesign ios-deploy

APPLE_TV=xxx
YOUTUBE_IPA="YouTube 1.2.1.ipa"

provision() {
  cd ~/Library/MobileDevice/Provisioning\ Profiles

  for provision in *.mobileprovision; do
      APP_ID=`/usr/libexec/PlistBuddy -c 'Print :Entitlements:application-identifier' /dev/stdin <<< $(security cms -D -i $provision)`
      if [[ $APP_ID == *YouTube ]] ;
      then
        echo $provision
        exit
      fi
  done
}
$PROVISION = provision

# Re-sign
mkdir /tmp/YouTube
cp "$YOUTUBE_IPA" "/tmp/YouTube/YouTube 1.2.1.ipa"
applesign -r -m "$PROVISION" "/tmp/YouTube/YouTube 1.2.1.ipa"

# Deploy
unzip "/tmp/YouTube/YouTube 1.2.1.ipa" -d /tmp/YouTube
ios-deploy --debug --bundle /tmp/YouTube/Payload/YouTubeTV.app --id $APPLE_TV
rm -rf "/tmp/YouTube"