OussK wrote
as i told you in my first reply it's a .Mp4 issue, and to fix this just use the file you get it from your camera directly don't convert this file in third party software as .MP4 than use it in after effects. mp4 video file 90% of time it will not work inside after effects and the only way to solve this is to transcode this video file to some better codec file to able to use it inside after effects.
i already transcode this video to ProRez, try to downloaded and test it Dropbox - BS2A8058_1.mov
also try to stop the GPU accelerator, to do this, go to file/project settings/video rendering and effects/ use mercury software only
NLE?