Use software to assist.

The music format of Blu-ray disc needs to be extracted to ts format using tsmuxer first, and the audio track is extracted to AC3 or DTS format. Then use megui, format factory, etc. to convert it to other formats.

Blu-ray, also known as Blu-ray Disc, is translated as Blu-rayDisc in English and is often referred to as BD. It is the next generation of high-definition audio and video storage optical disc media after DVD (can support FullHD video and high-definition specifications).