Tweaks to revealjs procedure

.emacs

@@ -114,7 +114,8 @@
 	  ;; Light approach, which requires web access and readable code (but speaker notes and relative paths don't work):
 	  ;; (setq file-type "revealjs -V revealjs-url='http://lab.hakim.se/reveal-js' --standalone"))
 	  ;; Heavy embedded binary approach (relies on reveal.js/ being in ~/.revealjs/):
-	  (setq file-type "revealjs --embed-resources --standalone -V revealjs-url='/home/ntnsndr/.revealjs/reveal.js' -V theme=ntn -V controls=false --slide-level=2"))
+      ;; Workaround: For YouTube videos, need to add `data-external="1"` (https://is.gd/UmgYgp)
+	  (setq file-type "revealjs --standalone --embed-resources -V revealjs-url='/home/ntnsndr/.revealjs/reveal.js' -V theme=ntn -V controls=false --slide-level=2"))
     ;; set up slides pptx routine
     (when (string-equal file-type "pptx")
       (setq file-ext "pptx")
@@ -127,8 +128,8 @@
                     "iconv -t utf-8 " tmp-in-file " | " ;; pipe in utf-8 for pandoc
                     "pandoc -s" ;; embed full header in HTML
                     " -f markdown+smart" ;; add curly quotes
-                    ;; remove "--citeproc" for older versions
                     " --citeproc --bibliography $HOME/Zotero/lib.bib" ;; connect to BibTeX export from Zotero
+                    ;; ^ remove "--citeproc" for older versions
                     " -t " file-type
                     " -o " tmp-out-file))
 ;; End convert routine