Tvheadend

3.4 only supported transcoding as an experimental feature, enabled by changing the code before compilation. Chances are that you thus don't have it.

Whether a DS414 is up to transcoding anyway is debatable - perhaps SD streams, but it's asking a lot of a low-powered CPU.

I already suspected. Did you have a manual to compile tvheadend inclusive transcoding?
I would still like to try it with my CPU , but also there are already thinking a new NAS with better CPU to buy.
Thank you.

IIRC, you have to edit plumbing/transcoding.c and change transcoding_enabled to true, or something like that. Then compile - although, given you're on Synology, you're probably cross-compiling from another platform and that's way beyond anything I've ever done.

From what I've read elsewhere, the newer Intel Evansport 'play' DSes seem to support hardware transcoding on the native software - it's not supported in tvheadend because someone's used a customised version of ffmpeg to enable support, but that's maybe something to look into.

plumbing/transcoding variable has been removed some time ago : https://tvheadend.org/projects/tvheadend/repository/revisions/8e6538a0bc407adab05d06041fe5a4b31cbb10bf

i see in the makefiles that transcoding.c is refferd to there, i belive transcoding enable/disable has been moved to a build option.

run $ ./configure --help to look for transcoding

Prilly NO wrote:

plumbing/transcoding variable has been removed some time ago

Correct - my reference was to the 3.4.x the OP is using. 3.9.x is different.

The versions confuses me a little . Which version is currently actually?

I try to compile respectively cross-compile.

I try to cross-compiling, but I 'm more of despair . Can someone help me and explain the whole?