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Mkvtoolnix CLI question?

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Senior Member
Hi all :)

i get a question, i need to change language tags for serveral mkv files in a given folder on gdrive.

i use this command:

find /mnt/unionfs/NewMovies . -iname '*.mkv' -print0 | xargs -0 -n1 -P8 mkvpropedit --edit track:v1 --set language=eng --set flag-forced=0 --edit track:a1 --set language=ger --set flag-forced=1

but i get this error:

The file is being analyzed.
Error: Modification of properties in the section 'Track headers' was requested, but no corresponding level 1 element was found in the file. The file has not been modified.

Does somebody know how i could achieve this to get it working?



Senior Member
by editing a bit the command i get this as error:


find /mnt/unionfs/NewMovies . -iname '*.mkv' -print0 | xargs -0 -n1 -P8 mkvpropedit --edit track:a1 --set language=ger


The file is being analyzed.
The changes are written to the file.
Error: Updating the 'Tracks' element failed. Reason: An unknown error occured. The file has been modified.

Could it be related to Gdrive?

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