From my limited experience most TVs have a shut off point
when playing DVDs & files. Seems you need an additional amplifier. Sometimes there is a TV setting for Films.

It's often a sore point when on a legit DVD the audio is too quiet.
When raising the volume after a certain point it doesn't make any
difference. Had this problem with last 2 TVs, last one is a 2 year
old 40" Samsung Smart TV. The DVDs vary so much on the audio
level. We don't want to run extra surround sound due to lack of
space, but... it may be your only solution.

As I do quite a few DVDs, I up the audio level on the quiet files
via the software before converting.


Regards catoro.