Its the trueHD audio track as the first audio that is mucking up the direct transfer. Also mkv is getting remuxed on the fly. Put the video track and the single AC3 audio track into an IMSA compliant streamable MP4 file and it will transfer to tivo as is and play just fine. In the second file there is no tivo compatible audio and its being transcoded on the fly. Again, one video track, one ac3 audio track in streamable mp4 file and both of these should transfer direct and play just fine.