SOLVED: Problems with TRANSCODING (TrueNAS)

[TheDreadPirate]

Yep. But, as I said, what you are seeing is expected.

Code:

Stream mapping:
  Stream #0:0 (hevc) -> setparams:default (graph 0)
  Stream #0:3 (pgssub) -> scale:default (graph 0)
  overlay:default (graph 0) -> Stream #0:0 (h264_qsv)
  Stream #0:1 -> #0:1 (dts (dca) -> aac (libfdk_aac))

It is GPU transcoding, h264_qsv, but subtitle burn in and audio transcoding always happens on the CPU. And subtitle burn in is multi-threaded.