Subtitles on Sharp Aquos LC80LE646S

Hello!
I have a huge 80" Sharp Aquos. Nice TV, no subtitles support...
LC80LE646S
I need to burn the subtitles on the streaming.
I use a XPenology system (DSM 4.3), on HP Gen8 Microserver with Serviio 1.4.0-0024.
I've selected "Enable burned-in subtitles - Always" and Serviio is using the Aquos preset, but is NOT transcoding (I see 10% processor load).
My files are avi (mp4, xvid, h264).
The Serviio is using the Sharp Aquos profile.
I've tried the forceVTranscoding="true" from here, but no luck...
TV supported formats:
I have a huge 80" Sharp Aquos. Nice TV, no subtitles support...
LC80LE646S
I need to burn the subtitles on the streaming.
I use a XPenology system (DSM 4.3), on HP Gen8 Microserver with Serviio 1.4.0-0024.
I've selected "Enable burned-in subtitles - Always" and Serviio is using the Aquos preset, but is NOT transcoding (I see 10% processor load).
My files are avi (mp4, xvid, h264).
The Serviio is using the Sharp Aquos profile.
I've tried the forceVTranscoding="true" from here, but no luck...
TV supported formats: