It is recommended that the entries in profiles.xml not be altered. In any event, if you change something it will be replaced at the next Serviio update, as the file is always replaced. But Serviio also support a user created file with profiles that will never be removed.
Here's an example of one I made to play around with a new device. Everything within the <Profile> and </Profile> fields is a single profile. Just a few things to remember. The id in the first line must not match any of the existing IDs used in the main profile file. For your matching of the DIVX file, you might need to enable
detailed logging and then play one using the DirecTV profile to see what it is using for that file.
My example is only altering the audio codec. Notice on the <Video ...> line there's a target ACodec, but no VCodec. In your case, you probably need a targetVCodec of either h264 or mpeg2video. Your target container should be fine using mpegts with either target codec. The tricky part is the Matches lines. I doubt you can use the container as a match, as you likely have playable and non-playable files in the same container. So the trick will be finding the match for the vCodec. You can see the available options on that page you linked to previously. It might take some experimentation to find the right match.
Once you've entered the information, you can reload the profiles in Serviio from the Console by clicking "Stop Server" then "Start Server" on the Status tab at the bottom. If you have an error in your coding, Serviio won't restart, so you can troubleshoot the code for the error. Using a text editor like Notepad++ is enormous help, since it understands the XML code and can guide you with the proper opening and closing section spellings.
Dan
LG NANO85 4K TV, Samsung JU7100 4K TV, Sony BDP-S3500, Sharp 4K Roku TV, Insignia Roku TV, Roku Ultra, Premiere and Stick, Nvidia Shield, Yamaha RX-V583 AVR.
Primary server: Intel i5-6400, 16 gig ram, Windows 10 Pro, 22 TB hard drive space | Test server Windows 10 Pro, AMD Phenom II X4 965, 8 gig ram
HOWTO: Enable debug logging HOWTO: Identify media file contents