How competent/confident are you in the linux bash?
That looks like a Ubuntu to me;
sudo nano /home/hts/.hts/tvheadend/profile/09494e37f964f3ec3d6a536da73d2d59
providing nano opens with no text in the editor (it should be blank), copy/paste the following into the editor
{
"container": 1,
"resolution": 384,
"channels": 2,
"vcodec": "libx264",
"vcodec_preset": "faster",
"vbitrate": 0,
"acodec": "aac",
"abitrate": 0,
"scodec": "copy",
"class": "profile-transcode",
"enabled": true,
"default": false,
"name": "webtv-h264-aac-matroska",
"comment": "WEBTV profile H264/AAC/Matroska",
"priority": 3,
"fpriority": 0,
"timeout": 0,
"restart": false,
"contaccess": true,
"svfilter": 0,
"shield": true
}
Save the file (ctrl+o, ctrl+x)
Fix the file permissions
sudo chown hts:video /home/hts/.hts/tvheadend/profile/09494e37f964f3ec3d6a536da73d2d59
Restart tvheadend
The new profile should show up.
This assumes that TVHeadend is installed in the default location with the default user account - should be a safe assumption if you've installed through apt/aptitude.
