a) most or even all interfaces to hive blockchain (like hive.blog or ecency.com) display a window to play video content only for YouTube materials;
b) when copying a link for a material from the LBRY app, the link starts with the phrase 'https://open.lbry.com' and may be represented in a hive post as an ordinary text; by opening mentioned link ('https://open.lbry.com...') in a web browser, getting redirected to the Odysee website with the 'pursued' video material and then copying the link to the Odysee we achieve a link, that will be visible in a post on the hive blockchain as a clickable link (e.g. https://odysee.com/@NaomiBrockwell:4/Most-private-browsers )
c) regarding the 'brackets' - it is possible that these are only inserted when publishing a post via the mobile version of the site;