Convert ETRG to MP4

Converting Warez Movie Format directly to MPEG-4 Videos (.etrg to .mp4 conversion) is, in fact, not necessary, since it's very likely that your ETRG file is already a multimedia format.

ETRG files are typically just parts of a file name and the files themselves are in fact common multimedia formats, i.e. AVI, MP4, MKV etc.

Simply enable file extensions in your system settings to show the actual file type.