Question1: set src, for video tag and set loadstart listening method for video. Src, is also set when the method is entered, but the video cover is not displayed all the time. What"s going on?
Question2: what are the possible reasons for setting loadedmetadata snooping for video, sometimes triggering, and sometimes not entering the method?
for the first time to make a video, ask for advice. Thank you.
video sets the cover using the poster attribute
< video controls poster= "/ images/w3school.gif" > < / video >
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