Searching on https://amp.dev/documentation/guides-and-tutorials/develop/story_ads_best_practices#video, the documentation only talks about upper limit of video file size. Are there any limits on the video duration? I've added videos in my application and the videos just won't play on iphones. It fails with 'Video failed to play' error message at the bottom right corner. Also warnings seen in the console on desktop as below
[video-manager] This video is too short for `video-percentage-played`. Reports may be innacurate. For best results, use videos over 5 seconds long.