Can't DLNA play Blu-ray ISO 3D files

Currently, DLNA does not support the playback of Blu-ray ISO 3D files.   However, you can use alternative methods such as SMB/WebDAV/FTP to play these files.

Another option is utilizing software like AnyDVD, DVDFab, and MakeMKV to create MVC encoded MKV files with Blu-ray discs for which you own the copyright or are free to use, which can then be played via DLNA.

Please ensure that all the actions comply with relevant copyright laws when obtaining and using any digital content, respecting intellectual property rights.