Hello Stas

Yes - the "open video" import of a 6Kvideo with the newest Version 6.7.1 is fail.

Here you can download a (first handheld) GH-5 6K post focus video to test it.
http://www.frank-hoppe.com/TMP/P_F_0492.MP4

Thank you for fix it in a Update.

Regards
Frank