Direct m3u8 links for JTBC are notoriously "dynamic." This means they often include security tokens that expire after a few hours, making static links you find on public lists stop working quickly. Official Source: The most stable way to watch is through the official JTBC Live site IPTV Lists:
Like any other streaming method, JTBC M3U8 links have their advantages and disadvantages. jtbc m3u8 link
Streaming URLs for major networks like JTBC frequently change to prevent unauthorized access. Updated Links Direct m3u8 links for JTBC are notoriously "dynamic