Getting below error while trying to access the link. 

There is no OOTB feature to extract metadata at individual asset level. It works ONLY on the folders unless you implement custom report for it. Hope this helps.

Only approach I can recommend is to create custom override for the OOTB generated thumbnail. Just be careful whenever AEM Image component upgrade happens.

Hi @Tahera_BegumSh , Whenever we have to render URL string in HTL, you have to ensure to provide content as uri. This will ensure url string renders properly on generated HTML without any issues.<div style="background-image: url(${filepath @ context='uri'});"> 

Thank you for sharing.

Figured out. Dynamic media doesn't support CSV files.

Yes. Because your ui.apps and ui.frontend won't talk to each other unless explicitly published across modules. You can probably try setting up your clientconfig file to automatically copy clientlibs from your frontend module to ui.apps whenever build is triggered. 

Is it possible to generate dynamic media url for a csv asset inside AEM Assets? If yes, which dynamic media processing profile should be applied?

@digarg17  I am referring to the asset id which Adobe PDF API leverages for performing any operation on it. So far, I haven't found any documentation of directly leveraging DAM pdfs.