VideoExtractFrames[] produces the error message: "The specified times are outside the duration of the video" even if the specified time is less than the length of the video. VideoExtractFrames[] works fine for the first few seconds, but fails with higher values of t. My video is 48 seconds long from an iPhone.
I did ImageResize[] and it worked fine, so I guess the size of the file affects the results of VideoExtractFrames[]
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