wheni down load video it is choppy from my phantom 4. i tried switching cards and i change it from mov to mp4. and i tried to play it on different player and no luck. i also have a dji phantom standard 3 and it plays video fine

What resolution are you recording on the P4. if your P3S video played back fine, then you may be shooting in 4k and your computer cannot handle the processing of the 4k.