pv-test, mp4 vs mkv is moot, use the open source variant (mkv) since barely changes the file size.

rc_shared.sh

@@ -808,7 +808,8 @@ function pv-test {
 				for vbr in 1500k 2000k 2500k; do
 					for acodec in aac libopus; do
 						for abr in 192k 128k; do
-							for ext in mp4 mkv; do
+							#for ext in mp4 mkv; do
+                                ext=mkv
 								#newfile="_$vcodec-p$vpreset-$crf_$acodec-$abr.$ext"
 								newfile="_${size_in}_${vcodec}-${vbr}_${acodec}-${abr}.${ext}"
 								start=$SECONDS
@@ -836,7 +837,7 @@ function pv-test {
 								mv -v "$newfile" "${filename_in}_${minutes}m${newfile}"
 
 								echo -e "\n* Finished run in $minutes minutes!\n"
-							done
+							#done
 						done
 					done
 				done