I do most of the support at Issues · dscottbuch/cTiVo · GitHub, but I can certainly answer this one here. You should try the Decrypt MP4 format (you'll need to enable in UI at Edit>edit formats.). From the wiki: Decrypt MP4: This is a Format for experts. It's very fast, and will copy the video and audio through without re-encoding, so (especially if interlaced) it may be incompatible with iTunes and other systems. Unlike Decrypted TiVo Show below, it converts the file format to MP4, so you can add subtitles, commercial skipping information, and other metadata inside the file.