iOS slow motion video shutter speed
I have shot a couple of short pieces of experimental video using the "Slo mo" on my iPhone 6S at the 240 fps setting. I have grabbed a frame which has a moving object in it which I want to estimate the speed of using the blur trail length. To do that I need to know the exposure time (shutter speed in conventional language).
This info is not available in the standard data with the video. I have asked Apple support who said I need to find an app.
Does anyone know how to extract the shutter speed which was used in a slo mo recording ?
Thanks