channels-dvr.log gets corrupted upon shutdown sometimes by appending bunch of zero value bytes ^A/0x0. Using grep requires adding -a option.
How to find
grep -a 'Starting Channels DVR' channels-dvr.log | grep -a -v ^2` | less
or
grep -a 'Starting Channels DVR' channels-dvr.log |grep -a -v ^2| tr '\0' '\\'