SetDirectory["C:/drorbn/AcademicPensieve/Album/2020.01.11 Groningen to Schiermonnikoog Ride"]

vid=Import["20200111_141937.mp4"]

ImageDimensions/@VideoFrameList[vid,5]

ImageResize[#,400]& /@ VideoFrameList[vid,10]

Export["20200111_141937.mp4.gif",ImageResize[#,400]& /@ VideoFrameList[vid,10], "DisplayDurations"->0.5, "AnimationRepetitions"->∞]