Flac via samsung TV to DAC: lossless?

With my Samsung TV, I'm able to play all my music files (.flac) that are on my PC-harddisk (with serviio running under Win7) , seems to work great, with all the great benefits Serviio offers, thanks!
If I understand correctly (but please correct me if I'm wrong), these files are "transcoded" to .mp3, so my TV can actually play them. This is OK if I play the music with the TV itself, since the quality of the speakers isn't that great...
But suppose I connect the optical output of my TV (SPDIF) to a DAC, would the original (lossless) data be sent to the DAC? Or is it impossible to use the Samsung TV this way?
(Sorry if this is a rather dumb question , but I couldn't figure this out reading FAQ's, ...)
Thanks for your time,
Stef

[Iveky]

Samsungg E/F play flac, no need to transcode, but I am not sure what is sent from TV through spdif out...

if Serviio transcoded into mp3, then forget flac

Sent from my LG-E440 using Tapatalk 2

[Iveky]

just tested, Samsung ES6800:
flaac from serviio to tv works without transcoding, sending out on optical out, connected to receiver
and now i don't see how to change anything on tv, just can say spdif as pcm and nothing else
my receiver Sony STR685 gets 48kHz PCM
(Sony is capable 96kHz but i don't see what how to force tv to send out 96...)

anyway, just searched all my library for flaac's... all are 44.1