A shell script with associated tools to transcode the content of VDR1.x and VDR2.x recordings as accurately as possible, including all streams, audio, AD, subtitles, and metadata into more compressed format, while maintaining perceived quality. H264 and AAC are the chosen codecs for the main streams. SD recordings are reduced to anywhere from 35% - 90% of original size depending on content and compression settings. On average, you can expect to save 1/3 of the disk space used for SD recordings.
This tool is possibly the only tool capable of converting old VDR1.x recordings into VDR2 compatible .ts files with dvb subtitles playable on VDR2 and 3rd party players such as Kodi, MPC-HC and VLC.
See comprehensive wiki and files in Git repository