As a followup, embedded here is a playlist for remapping TVE channels to their DirecTV channel equivalents. (Because this is tailored for my parents, the Spanish language channels, locals, and a few others have been omitted. However, it is fairly complete.) If you plan to follow this as an example, make sure you set the M3U playlist type to MPEG-TS, not HLS.
To get the most use out of it, it's recommended to have this as a higher priority than the TVE-DTV source on the clients, and stack channels based upon guide data rather than channel number. That way, channels that are received via TVE that have no DirecTV mapping (such as C-SPAN3) will still be present later in the guide, but others (like C-SPAN and C-SPAN2) won't be repeated.
#EXTM3U
#EXTINF:-1 channel-id="dtv-cspan" channel-number="350" tvc-guide-stationid="68344",CSPAN
http://127.0.0.1:8089/devices/ANY/channels/6007/stream.mpg
#EXTINF:-1 channel-id="dtv-cspan2" channel-number="351" tvc-guide-stationid="68334",CSPAN2
http://127.0.0.1:8089/devices/ANY/channels/6008/stream.mpg
#EXTINF:-1 channel-id="dtv-cc" channel-number="249" tvc-guide-stationid="64599",CCP
http://127.0.0.1:8089/devices/ANY/channels/6011/stream.mpg
#EXTINF:-1 channel-id="dtv-mtv" channel-number="331" tvc-guide-stationid="64630",MTVP
http://127.0.0.1:8089/devices/ANY/channels/6013/stream.mpg
#EXTINF:-1 channel-id="dtv-vh1" channel-number="335" tvc-guide-stationid="64634",VH1P
http://127.0.0.1:8089/devices/ANY/channels/6015/stream.mpg
#EXTINF:-1 channel-id="dtv-cmt" channel-number="327" tvc-guide-stationid="27203",CMTP
http://127.0.0.1:8089/devices/ANY/channels/6017/stream.mpg
#EXTINF:-1 channel-id="dtv-bet" channel-number="329" tvc-guide-stationid="64673",BETP
http://127.0.0.1:8089/devices/ANY/channels/6019/stream.mpg
#EXTINF:-1 channel-id="dtv-tvland" channel-number="304" tvc-guide-stationid="74134",TVLANDP
http://127.0.0.1:8089/devices/ANY/channels/6021/stream.mpg
#EXTINF:-1 channel-id="dtv-para" channel-number="241" tvc-guide-stationid="59186",PARAMOUNT
http://127.0.0.1:8089/devices/ANY/channels/6022/stream.mpg
#EXTINF:-1 channel-id="dtv-logo" channel-number="272" tvc-guide-stationid="96972",LOGOP
http://127.0.0.1:8089/devices/ANY/channels/6025/stream.mpg
#EXTINF:-1 channel-id="dtv-nickjr" channel-number="301" tvc-guide-stationid="87339",NICKJRP
http://127.0.0.1:8089/devices/ANY/channels/6029/stream.mpg
#EXTINF:-1 channel-id="dtv-cnn" channel-number="202" tvc-guide-stationid="58646",CNN
http://127.0.0.1:8089/devices/ANY/channels/6030/stream.mpg
#EXTINF:-1 channel-id="dtv-hln" channel-number="204" tvc-guide-stationid="64549",HLN
http://127.0.0.1:8089/devices/ANY/channels/6031/stream.mpg
#EXTINF:-1 channel-id="dtv-cnni" channel-number="358" tvc-guide-stationid="10146",CNNI
http://127.0.0.1:8089/devices/ANY/channels/6032/stream.mpg
#EXTINF:-1 channel-id="dtv-tbs" channel-number="247" tvc-guide-stationid="58515",TBS
http://127.0.0.1:8089/devices/ANY/channels/6033/stream.mpg
#EXTINF:-1 channel-id="dtv-tbsw" channel-number="247-1" tvc-guide-stationid="67890",TBSP
http://127.0.0.1:8089/devices/ANY/channels/6034/stream.mpg
#EXTINF:-1 channel-id="dtv-tnt" channel-number="245" tvc-guide-stationid="42642",TNT
http://127.0.0.1:8089/devices/ANY/channels/6035/stream.mpg
#EXTINF:-1 channel-id="dtv-tntw" channel-number="245-1" tvc-guide-stationid="61340",TNTP
http://127.0.0.1:8089/devices/ANY/channels/6036/stream.mpg
#EXTINF:-1 channel-id="dtv-tru" channel-number="246" tvc-guide-stationid="64490",TRU
http://127.0.0.1:8089/devices/ANY/channels/6037/stream.mpg
#EXTINF:-1 channel-id="dtv-truw" channel-number="246-1" tvc-guide-stationid="65717",TRUP
http://127.0.0.1:8089/devices/ANY/channels/6038/stream.mpg
#EXTINF:-1 channel-id="dtv-tcm" channel-number="256" tvc-guide-stationid="64312",TCM
http://127.0.0.1:8089/devices/ANY/channels/6039/stream.mpg
#EXTINF:-1 channel-id="dtv-toon" channel-number="296" tvc-guide-stationid="60048",TOON
http://127.0.0.1:8089/devices/ANY/channels/6041/stream.mpg
#EXTINF:-1 channel-id="dtv-toonw" channel-number="297" tvc-guide-stationid="67703",TOONP
http://127.0.0.1:8089/devices/ANY/channels/6042/stream.mpg
#EXTINF:-1 channel-id="dtv-aetv" channel-number="265" tvc-guide-stationid="51529",AETV
http://127.0.0.1:8089/devices/ANY/channels/6043/stream.mpg
#EXTINF:-1 channel-id="dtv-hist" channel-number="269" tvc-guide-stationid="14771",HISTORY
http://127.0.0.1:8089/devices/ANY/channels/6044/stream.mpg
#EXTINF:-1 channel-id="dtv-fyi" channel-number="266" tvc-guide-stationid="58988",FYI
http://127.0.0.1:8089/devices/ANY/channels/6045/stream.mpg
#EXTINF:-1 channel-id="dtv-life" channel-number="252" tvc-guide-stationid="60150",LIFETIME
http://127.0.0.1:8089/devices/ANY/channels/6046/stream.mpg
#EXTINF:-1 channel-id="dtv-msnbc" channel-number="356" tvc-guide-stationid="64241",MSNBC
http://127.0.0.1:8089/devices/ANY/channels/6050/stream.mpg
#EXTINF:-1 channel-id="dtv-cnbc" channel-number="355" tvc-guide-stationid="58780",CNBC
http://127.0.0.1:8089/devices/ANY/channels/6051/stream.mpg
#EXTINF:-1 channel-id="dtv-usa" channel-number="242" tvc-guide-stationid="74030",USAP
http://127.0.0.1:8089/devices/ANY/channels/6053/stream.mpg
#EXTINF:-1 channel-id="dtv-syfy" channel-number="244" tvc-guide-stationid="65626",SYFYP
http://127.0.0.1:8089/devices/ANY/channels/6055/stream.mpg
#EXTINF:-1 channel-id="dtv-e" channel-number="236" tvc-guide-stationid="91579",EP
http://127.0.0.1:8089/devices/ANY/channels/6057/stream.mpg
#EXTINF:-1 channel-id="dtv-bravo" channel-number="237" tvc-guide-stationid="73994",BRAVOP
http://127.0.0.1:8089/devices/ANY/channels/6059/stream.mpg
#EXTINF:-1 channel-id="dtv-oxy" channel-number="251" tvc-guide-stationid="74032",OXYGENP
http://127.0.0.1:8089/devices/ANY/channels/6061/stream.mpg
#EXTINF:-1 channel-id="dtv-ukds" channel-number="295" tvc-guide-stationid="105306",SPROUTP
http://127.0.0.1:8089/devices/ANY/channels/6063/stream.mpg
#EXTINF:-1 channel-id="dtv-ngc" channel-number="276" tvc-guide-stationid="49438",NGC
http://127.0.0.1:8089/devices/ANY/channels/6070/stream.mpg
#EXTINF:-1 channel-id="dtv-ngcp" channel-number="276-1" tvc-guide-stationid="71601",NGCP
http://127.0.0.1:8089/devices/ANY/channels/6071/stream.mpg
#EXTINF:-1 channel-id="dtv-ngwld" channel-number="283" tvc-guide-stationid="67331",NGWILD
http://127.0.0.1:8089/devices/ANY/channels/6072/stream.mpg
#EXTINF:-1 channel-id="dtv-fnc" channel-number="360" tvc-guide-stationid="60179",FNC
http://127.0.0.1:8089/devices/ANY/channels/6073/stream.mpg
#EXTINF:-1 channel-id="dtv-fbn" channel-number="359" tvc-guide-stationid="58718",FBN
http://127.0.0.1:8089/devices/ANY/channels/6074/stream.mpg
#EXTINF:-1 channel-id="dtv-fx" channel-number="248" tvc-guide-stationid="58574",FX
http://127.0.0.1:8089/devices/ANY/channels/6080/stream.mpg
#EXTINF:-1 channel-id="dtv-fxw" channel-number="248-1" tvc-guide-stationid="59814",FXP
http://127.0.0.1:8089/devices/ANY/channels/6081/stream.mpg
#EXTINF:-1 channel-id="dtv-fxx" channel-number="259" tvc-guide-stationid="66379",FXX
http://127.0.0.1:8089/devices/ANY/channels/6082/stream.mpg
#EXTINF:-1 channel-id="dtv-fxxw" channel-number="259-1" tvc-guide-stationid="82571",FXXP
http://127.0.0.1:8089/devices/ANY/channels/6083/stream.mpg
#EXTINF:-1 channel-id="dtv-fxm" channel-number="258" tvc-guide-stationid="14988",FXM
http://127.0.0.1:8089/devices/ANY/channels/6084/stream.mpg
#EXTINF:-1 channel-id="dtv-sundance" channel-number="239" tvc-guide-stationid="92041",SUNDANCE
http://127.0.0.1:8089/devices/ANY/channels/6085/stream.mpg
#EXTINF:-1 channel-id="dtv-amc" channel-number="254" tvc-guide-stationid="59337",AMC
http://127.0.0.1:8089/devices/ANY/channels/6086/stream.mpg
#EXTINF:-1 channel-id="dtv-bbca" channel-number="264" tvc-guide-stationid="64492",BBCA
http://127.0.0.1:8089/devices/ANY/channels/6087/stream.mpg
#EXTINF:-1 channel-id="dtv-ifc" channel-number="333" tvc-guide-stationid="92008",IFC
http://127.0.0.1:8089/devices/ANY/channels/6088/stream.mpg
#EXTINF:-1 channel-id="dtv-wetv" channel-number="260" tvc-guide-stationid="92020",WETV
http://127.0.0.1:8089/devices/ANY/channels/6089/stream.mpg
#EXTINF:-1 channel-id="dtv-hmc" channel-number="312" tvc-guide-stationid="66268",HALLMARK
http://127.0.0.1:8089/devices/ANY/channels/6090/stream.mpg
#EXTINF:-1 channel-id="dtv-hmm" channel-number="565" tvc-guide-stationid="46710",HALLMARKMM
http://127.0.0.1:8089/devices/ANY/channels/6091/stream.mpg
#EXTINF:-1 channel-id="dtv-hdr" channel-number="564" tvc-guide-stationid="105723",HALLMARKDRAMA
http://127.0.0.1:8089/devices/ANY/channels/6092/stream.mpg
#EXTINF:-1 channel-id="dtv-ova" channel-number="274" tvc-guide-stationid="69061",OVATION
http://127.0.0.1:8089/devices/ANY/channels/6093/stream.mpg
#EXTINF:-1 channel-id="dtv-weather" channel-number="362" tvc-guide-stationid="58812",WEATHER
http://127.0.0.1:8089/devices/ANY/channels/6094/stream.mpg
#EXTINF:-1 channel-id="dtv-reelz" channel-number="238" tvc-guide-stationid="52199",REELZ
http://127.0.0.1:8089/devices/ANY/channels/6095/stream.mpg
#EXTINF:-1 channel-id="dtv-own" channel-number="279" tvc-guide-stationid="70388",OWN
http://127.0.0.1:8089/devices/ANY/channels/6100/stream.mpg
#EXTINF:-1 channel-id="dtv-disc" channel-number="278" tvc-guide-stationid="56905",DISCOVERY
http://127.0.0.1:8089/devices/ANY/channels/6101/stream.mpg
#EXTINF:-1 channel-id="dtv-food" channel-number="231" tvc-guide-stationid="50747",FOOD
http://127.0.0.1:8089/devices/ANY/channels/6102/stream.mpg
#EXTINF:-1 channel-id="dtv-apl" channel-number="282" tvc-guide-stationid="57394",ANIMAL-PLANET
http://127.0.0.1:8089/devices/ANY/channels/6103/stream.mpg
#EXTINF:-1 channel-id="dtv-hgtv" channel-number="229" tvc-guide-stationid="49788",HGTV
http://127.0.0.1:8089/devices/ANY/channels/6104/stream.mpg
#EXTINF:-1 channel-id="dtv-tlc" channel-number="280" tvc-guide-stationid="57391",TLC
http://127.0.0.1:8089/devices/ANY/channels/6105/stream.mpg
#EXTINF:-1 channel-id="dtv-trvl" channel-number="277" tvc-guide-stationid="59303",TRAVEL
http://127.0.0.1:8089/devices/ANY/channels/6106/stream.mpg
#EXTINF:-1 channel-id="dtv-id" channel-number="285" tvc-guide-stationid="65342",INVESTIGATION-DISCOVERY
http://127.0.0.1:8089/devices/ANY/channels/6107/stream.mpg
#EXTINF:-1 channel-id="dtv-diy" channel-number="230" tvc-guide-stationid="67375",DIY
http://127.0.0.1:8089/devices/ANY/channels/6108/stream.mpg
#EXTINF:-1 channel-id="dtv-cook" channel-number="232" tvc-guide-stationid="68065",COOKING-CHANNEL
http://127.0.0.1:8089/devices/ANY/channels/6109/stream.mpg
#EXTINF:-1 channel-id="dtv-sci" channel-number="284" tvc-guide-stationid="57390",SCIENCE
http://127.0.0.1:8089/devices/ANY/channels/6110/stream.mpg
#EXTINF:-1 channel-id="dtv-ahc" channel-number="287" tvc-guide-stationid="78808",AHC
http://127.0.0.1:8089/devices/ANY/channels/6111/stream.mpg
#EXTINF:-1 channel-id="dtv-dest" channel-number="286" tvc-guide-stationid="60468",DESTINATION-AMERICA
http://127.0.0.1:8089/devices/ANY/channels/6112/stream.mpg
#EXTINF:-1 channel-id="dtv-dlif" channel-number="261" tvc-guide-stationid="92204",DISCOVERY-LIFE
http://127.0.0.1:8089/devices/ANY/channels/6113/stream.mpg
#EXTINF:-1 channel-id="dtv-mtrtrd" channel-number="281" tvc-guide-stationid="31046",MOTORTREND
http://127.0.0.1:8089/devices/ANY/channels/6114/stream.mpg
#EXTINF:-1 channel-id="dtv-dis" channel-number="290" tvc-guide-stationid="59684",DISNEY
http://127.0.0.1:8089/devices/ANY/channels/6120/stream.mpg
#EXTINF:-1 channel-id="dtv-disw" channel-number="291" tvc-guide-stationid="63320",DISNEYP
http://127.0.0.1:8089/devices/ANY/channels/6121/stream.mpg
#EXTINF:-1 channel-id="dtv-disjr" channel-number="289" tvc-guide-stationid="74885",DISNEYJR
http://127.0.0.1:8089/devices/ANY/channels/6122/stream.mpg
#EXTINF:-1 channel-id="dtv-disjrw" channel-number="289-1" tvc-guide-stationid="75004",DISNEYJRP
http://127.0.0.1:8089/devices/ANY/channels/6123/stream.mpg
#EXTINF:-1 channel-id="dtv-dxd" channel-number="292" tvc-guide-stationid="60006",DISNEYXD
http://127.0.0.1:8089/devices/ANY/channels/6124/stream.mpg
#EXTINF:-1 channel-id="dtv-dxdw" channel-number="292-1" tvc-guide-stationid="63322",DISNEYXDP
http://127.0.0.1:8089/devices/ANY/channels/6125/stream.mpg
#EXTINF:-1 channel-id="dtv-frfm" channel-number="311" tvc-guide-stationid="59615",FREEFORM
http://127.0.0.1:8089/devices/ANY/channels/6126/stream.mpg
#EXTINF:-1 channel-id="dtv-frfmw" channel-number="311-1" tvc-guide-stationid="63324",FREEFORMP
http://127.0.0.1:8089/devices/ANY/channels/6127/stream.mpg
#EXTINF:-1 channel-id="dtv-espn" channel-number="209" tvc-guide-stationid="32645",ESPN1
http://127.0.0.1:8089/devices/ANY/channels/6140/stream.mpg
#EXTINF:-1 channel-id="dtv-espn2" channel-number="209" tvc-guide-stationid="45507",ESPN2
http://127.0.0.1:8089/devices/ANY/channels/6141/stream.mpg
#EXTINF:-1 channel-id="dtv-espnu" channel-number="208" tvc-guide-stationid="60696",ESPNU
http://127.0.0.1:8089/devices/ANY/channels/6142/stream.mpg
#EXTINF:-1 channel-id="dtv-espnews" channel-number="207" tvc-guide-stationid="59976",ESPNEWS
http://127.0.0.1:8089/devices/ANY/channels/6143/stream.mpg
#EXTINF:-1 channel-id="dtv-sec" channel-number="611" tvc-guide-stationid="89714",SEC
http://127.0.0.1:8089/devices/ANY/channels/6144/stream.mpg
#EXTINF:-1 channel-id="dtv-lhn" channel-number="677" tvc-guide-stationid="72861",LONGHORN
http://127.0.0.1:8089/devices/ANY/channels/6145/stream.mpg
#EXTINF:-1 channel-id="dtv-acc" channel-number="612" tvc-guide-stationid="111871",ACC
http://127.0.0.1:8089/devices/ANY/channels/6147/stream.mpg
#EXTINF:-1 channel-id="dtv-tennis" channel-number="217" tvc-guide-stationid="60316",TENNIS
http://127.0.0.1:8089/devices/ANY/channels/6155/stream.mpg
#EXTINF:-1 channel-id="dtv-golf" channel-number="218" tvc-guide-stationid="61854",GOLF
http://127.0.0.1:8089/devices/ANY/channels/6159/stream.mpg
#EXTINF:-1 channel-id="dtv-olympic" channel-number="624" tvc-guide-stationid="104089",OLYMPICS
http://127.0.0.1:8089/devices/ANY/channels/6160/stream.mpg
#EXTINF:-1 channel-id="dtv-nbcsn" channel-number="220" tvc-guide-stationid="48639",NBCSN
http://127.0.0.1:8089/devices/ANY/channels/6161/stream.mpg
#EXTINF:-1 channel-id="dtv-nesn" channel-number="628" tvc-guide-stationid="35038",NESN
http://127.0.0.1:8089/devices/ANY/channels/6163/stream.mpg
#EXTINF:-1 channel-id="dtv-nesna" channel-number="628-1" tvc-guide-stationid="63516",NESNPLUS
http://127.0.0.1:8089/devices/ANY/channels/6172/stream.mpg
#EXTINF:-1 channel-id="dtv-nfl" channel-number="212" tvc-guide-stationid="45399",NFL
http://127.0.0.1:8089/devices/ANY/channels/6192/stream.mpg
#EXTINF:-1 channel-id="dtv-mlb" channel-number="213" tvc-guide-stationid="62079",MLBTV
http://127.0.0.1:8089/devices/ANY/channels/6193/stream.mpg
#EXTINF:-1 channel-id="dtv-cbssn" channel-number="221" tvc-guide-stationid="59250",CBSSPORTS
http://127.0.0.1:8089/devices/ANY/channels/6196/stream.mpg
#EXTINF:-1 channel-id="dtv-fs1" channel-number="219" tvc-guide-stationid="82547",FS1
http://127.0.0.1:8089/devices/ANY/channels/6197/stream.mpg
#EXTINF:-1 channel-id="dtv-fs2" channel-number="618" tvc-guide-stationid="59305",FS2
http://127.0.0.1:8089/devices/ANY/channels/6198/stream.mpg
#EXTINF:-1 channel-id="dtv-btn" channel-number="610" tvc-guide-stationid="58321",BTN
http://127.0.0.1:8089/devices/ANY/channels/6199/stream.mpg
#EXTINF:-1 channel-id="dtv-fswest" channel-number="692" tvc-guide-stationid="116191",FS-RSN-FSW3LA
http://127.0.0.1:8089/devices/ANY/channels/6210/stream.mpg
#EXTINF:-1 channel-id="dtv-nasa" channel-number="352" tvc-guide-stationid="12553",NASA
http://127.0.0.1:8089/devices/ANY/channels/6757/stream.mpg
#EXTINF:-1 channel-id="dtv-"newsmax channel-number="349" tvc-guide-stationid="97163",NEWSMAX
http://127.0.0.1:8089/devices/ANY/channels/6764/stream.mpg
#EXTINF:-1 channel-id="dtv-bloom" channel-number="353" tvc-guide-stationid="71799",BLOOMBERG
http://127.0.0.1:8089/devices/ANY/channels/6768/stream.mpg
#EXTINF:-1 channel-id="dtv-nhkw" channel-number="322" tvc-guide-stationid="66347",NHKWRLD
http://127.0.0.1:8089/devices/ANY/channels/6769/stream.mpg
#EXTINF:-1 channel-id="dtv-fstv" channel-number="348" tvc-guide-stationid="16220",FSTV
http://127.0.0.1:8089/devices/ANY/channels/6778/stream.mpg
#EXTINF:-1 channel-id="dtv-rt" channel-number="321" tvc-guide-stationid="105350",RT-AMERICA
http://127.0.0.1:8089/devices/ANY/channels/6779/stream.mpg