Find more about applications that can help you to convert files in etrg format to mkv
It is likely that your .etrg file is already an MKV file (or some other multimedia format) and you just have known file extensions hidden in your system.
If you want to see the extensions, check one of our articles that deals with this topic : How to show extensions in Windows, which should help you to reverse the situation and see your extensions.
Unfortunately, there is no detailed software record in the database for this conversion.
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