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no response img tag is showing live video from my mobile camera but response is empty. So how this is getting data continiously ? I have attached a video footage of this please check that to see exact thing happening. thank you ! img tag

video footage

hivert
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Amir Rahman
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  • Your video is private, it needs to be unlisted if you want it hidden to anyone without a link – ButchMonkey Nov 15 '19 at 17:28
  • I suspect that it might be an issue with Chrome rather than `video` having no response. It could be a mime-type issue. What type of file is `video`? – Mike Poole Nov 15 '19 at 17:29
  • i dont know about mime type . its a mobile app name ip camera on play store that is showing live camera in img tag . i can see the page is loading infinitly while showing live camera my question is when there is no response from link how is it showing img continiously ? and sorry for private video i m changing it right now take a look please – Amir Rahman Nov 15 '19 at 17:37
  • you didn't show the head tags. might be some javascript is being executed. show the full page source – OMi Shah Nov 16 '19 at 11:27
  • i dont have source file and i dont thing showing data from inspect mode is readable so i didnt gave full page source – Amir Rahman Nov 23 '19 at 09:08

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I'm not 100% sure, but my guess is that it simply grabs a picture X times per second, saves it with name video and then forces <img />'s src attribute to be updated with more or less the same frequency.

What seems to be misleading here is how Chrome developer tools present information.

First of all, response tab in Chrome always says "empty" when you check an image request. I couldn't find why. Theoretically, when a browser requests an image it is returned as byte stream. You can even use byte stream directly in src attribute. However, Chrome will somewhy hide it from you.

Another thing here is that when a page requests an asset (img/js/css or other) more than once, Chrome Dev Tools' network tab will only show 1 last request to this resource.

As I said, I don't know if I'm right or not. You can check it out by going to Chrome Developer Tools -> video -> preview. If I'm right, you will see that content in this tab is also being "streamed".

BONUS: Actually you can show a video in img tag! However, as for now, it only works in last versions of Safari.

Igor Bykov
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