Trickplay, again

[fract]

ok, there's progress... i went back to yout first post and tinkered with tone mapping settings for transcoding - i have no idea how is this related, but that's a fact  - it started working again on synology.
i unchecked lower tone mapping option leaving only first one (vpp, for intel based drivers) checked.

well, as long as it works.
thnx for patience and ideas...