Subtitles becoming "und".

[DoubleBlah]

The tool is broken in which it does not retain subtitle language identifiers.
Instead the tool writes "und" in identifiers.

[DonaldFaQ]

There is no fix planned for this. MP4Muxer ignores the language flags, the flags must set manually in the encoding line. I have no idea how i can fix this, sry.

[DoubleBlah]

if "%english%"=="YES" set lang=English& set langDG=eng
if "%french%"=="YES" set lang=French& set langDG=fra
if "%spanish%"=="YES" set lang=Spanish& set langDG=spa
if "%german%"=="YES" set lang=German& set langDG=deu
if "%italian%"=="YES" set lang=Italian& set langDG=ita
if "%chinese%"=="YES" set lang=Chinese& set langDG=zho
if "%dutch%"=="YES" set lang=Dutch& set langDG=nld
if "%finish%"=="YES" set lang=Finish& set langDG=fin
if "%russian%"=="YES" set lang=Russian& set langDG=rus
if "%polish%"=="YES" set lang=Polish& set langDG=pol
if "%japenese%"=="YES" set lang=Japanese& set langDG=jpn
if "%portuguese%"=="YES" set lang=Portuguese& set langDG=por
if "%korean%"=="YES" set lang=Korean& set langDG=kor
if "%arabic%"=="YES" set lang=Arabic& set langDG=ara
if "%swedish%"=="YES" set lang=Swedish& set langDG=swe
if "%turkish%"=="YES" set lang=Turkish& set langDG=tur
if "%hindi%"=="YES" set lang=Hindi& set langDG=hin
if "%thai%"=="YES" set lang=Thai& set langDG=tha
if "%indonesian%"=="YES" set lang=Indonesian& set langDG=idn
if "%vietnamese%"=="YES" set lang=Vietnamese& set langDG=vie
if "%greek%"=="YES" set lang=Greek& set langDG=ell
if "%czech%"=="YES" set lang=Czech& set langDG=ces
if "%hebrew%"=="YES" set lang=Hebrew& set langDG=heb
if "%malay%"=="YES" set lang=Malay& set langDG=zlm
if "%tagalog%"=="YES" set lang=Tagalog& set langDG=tlg
if "%dansk%"=="YES" set lang=Dansk& set langDG=dan
if "%norwegian%"=="YES" set lang=Norwegian& set langDG=nor
if "%romanian%"=="YES" set lang=Romanian& set langDG=ron
if "%hungarian%"=="YES" set lang=Hungarian& set langDG=hun
if "%bengali%"=="YES" set lang=Bengali& set langDG=ben
if "%maltese%"=="YES" set lang=Maltese& set langDG=mlt
if "%icelandic%"=="YES" set lang=Icelandic& set langDG=isl
if "%slovak%"=="YES" set lang=Slovak& set langDG=slk
if "%serbian%"=="YES" set lang=Serbian& set langDG=srp
if "%estonian%"=="YES" set lang=Estonian& set langDG=est
if "%catalan%"=="YES" set lang=Catalan& set langDG=cat

This was found in Reset_9999's script. DG may be DGDemux being used somehow I would guess...