in the embodiment shown in fig1 an independent light source 11 has been provided for illuminating the synchronizing marks 2a such independent light source 11 is eliminated and a light source 1 used for reading out video information from the evr film 2 is used also as a means for illuminating the synchronizing marks 2a on the evr film 2 more precisely when the light source 1 is adapted for directing a stripe of light 15 to the evr film 2 as shown in fig2 the synchronizing marks 2a on the evr film 2 are simultaneously illuminated the light passed through these synchronizing marks 2a is applied via a light conductor 17 such as an optical fiber to a photoelectric detector 12 so as to detect the synchronizing marks 2a hence to derive the vertical synchronizing signal fig6 is a block diagram showing parts of still another embodiment of the present invention and like reference numerals are used to denote like parts appearing in fig1 this embodiment differs from the embodiments shown in fig1 and 5 in the manner of detecting synchronizing marks 2a on an evr film 2 a single light source not shown is used to illuminate both the image portions and the synchronizing marks 2a on the evr film 2 in this embodiment a photoelectric image device 4 39 is provided for detecting for example a brightness signal this photoelectronic image device 4 39 is disposed so that it can also detect the synchronizing marks 2a the detected brightness signal including the signal of the synchronizing marks 2a detected by the photoelectronic image.