@godblessstrawberry I didn't find any m3u8 extension file in Network tab of Developer Applications in chrome browser. Could you you should suggest me what's the difficulty? Many thanks Location a lengthy-ago Last-Modified has no influence on caching, aside from permitting a cached reaction be used extended because of heuristic revalidation. https://isocialfans.com/story6534441/rumored-buzz-on-%E4%BB%AE%E6%83%B3%E9%80%9A%E8%B2%A8-%E3%82%AA%E3%83%B3%E3%83%A9%E3%82%A4%E3%83%B3%E3%82%AB%E3%82%B8%E3%83%8E