How to troubleshoot video download issues in Mac OS Safari

I am importing video files from amazon s3 via mac os safari video tag. It's fine in chrome, but in safari, the video is intermittently not being received. As you can see in the picture, I am getting the same status code 206, but the red 206 does not contain the address and host. If anyone knows why, please share the solution.

How to troubleshoot video download issues in Mac OS Safari
 
 
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