vdr-convert is a tool to accurately transcode VDR1.x and VDR2.x TV recordings, including all valid streams - video, audio (including AC3/DTS 5.1), Audio Description (AD), and DVB subtitles - into a more compressed and accessible format, while maintaining perceived quality with good compatibility.
H264 and AAC are the default codecs for the main streams, but H265 is available from V2 onwards, together with most common multimedia file formats for use in single-use/batch modes. Standard Def (SD) recordings are reduced to anywhere from 35% - 90% of original size depending on content and compression settings.
The user can leave the transcoded files in-place for use by VDR2.x or use them with external players such as Kodi, MPC-HC, or VLC
For full usage details, command line options etc, please refer to the Wiki