playercorefactory.xml

<playercorefactory>
	<players>
		<player name="Egreat" type="ExternalPlayer" audio="false" video="true">
			<filename>org.egreat.launcher</filename>
			<hidexbmc>true</hidexbmc>
			<playcountminimumtime>120</playcountminimumtime>
		</player>
	</players>
	<rules name="system rules">
		<rule name=smb protocols="smb|nfs" player="Egreat" />
		<rule name=video video="true" player="Egreat"/>
		<rule name=dvdimage dvdimage="true" player="Egreat"/>
		<rule name=rtmp protocols="rtmp" player="Egreat"/>
		<rule name=rtsp protocols="rtsp" player="Egreat" />
		<rule name=sop protocols="sop" player="Egreat" />
		<rule name=internetstream internetstream="true" player="Egreat" />
	</rules>
</playercorefactory>

This is for using the Egreat player for playback in Kodi 17.6.
Add this file to your userdata folder, and restart Kodi. Kodi should now launch all movies in the Egreat player.