Last week I came upon this trailer of a History Channel documentary called "The Unseen Holocaust", which announces "newly discovered footage" showing Nazi mass killings "on the Eastern Front", i.e. in the areas of the former Soviet Union occupied by Nazi Germany during World War II.
The whole documentary is not available on Youtube in English, but there is a version in what seems to be Hungarian, which allows for viewing some of the "newly discovered footage".
Most of the footage viewable hardly deserves the designation "newly discovered", for it is obviously footage that was included in the documentary "The Atrocities committed by German Fascists in the USSR", which was shown at the Nuremberg Trial of the Major War Criminals before the International Military Tribunal on 19 February 1946 and is the subject of an earlier blog series (part 1, part 2, part 3).
I have uploaded on Youtube a slideshow corresponding to each part of the aforementioned blog series (see here, here and here).
I have also uploaded a slideshow with the images linked to in the blog June 22, 1941 ("Nazi Crimes in the USSR (Graphic images!)").