Cannot upload video to iTunesConnect: The frame rate of your app video preview is too high

Question

I made an App Store preview video using QuickTime player on OS X Yosemite.
When I try to upload the video to iTunesConnect, I get an error message:

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Answer 1

Just did my first movie. hit lots of snags - heres quick steps to avoid them:

• RECORD
• Record in Quick Time Player > File > New Movie Recording
• Use iPhone 6/7 PLUS to get right dimensions
• use drop down beside red record button to choose iphone
• record your video - max 30 secs but easy to trim
• Trim in Quicktime to be under 30 secs
• Edit/Trim - drag the ends of the yellow bounds
• had problems splitting and combining clips in Quicktime - use iMovie
• save as mp4 or mov
• IMOVIE - CONVERT TO APP PREVIEW
• Use iMovie to get correct framerate
• File > New App Preview
• import exported movie file from quicktime
• drag movie to timeline
• press space to test play
• add sound if you like - google "royalty free sounds"
• drag wav into project/ drag into timelime
• EXPORT APP PREVIEW
• Share button top right
• choose App Preview (if missing check prev steps dont use File option fps dimesions may not be right)
• save to file mp4
• UPLOAD USING SAFARI
• Upload using Safari to iTunes Connect - wont work in chrome
• In pictures section of you app version, choose file, pick mp4 exported from imovie
• set frame to display when movie not playing
• save itunes version info
• movie uploaded
• itunes said 'can take up to 24 hours'