Video Subtitle= YES + TV subtitle= NO

Hello,

By creating an .srt text file with the same name as video file, I can display the subtitles when playing my personal camcorder HD videos.
For this, in Video OSD (Audio and subtitle icon), I had to "activate subtitles" then "aply for all movies"

But my problem is:

To see TV channels, I use an Networked TV tuner (HD homerun)
On some channels, subtitles are automatically displayed when the subtitles are activated in Video OSD,

Question :

-> How can i SEPARATE in defaults settings, the Video subtitles setup and the TV subtitles setup ? :

Subtitles ON for Videos in defaults settings
+
Subtitles OFF for TV in defaults settings

Thanks for any idea and experience