h264/x264 - Using trellis, recommended?

[ziggy1971]

I'm trying out some different settings for encoding 264, however, I'm unclear as to whether or not I should use Trellis.
What are some recommendations/suggestions?
Trellis for I, IP, Auto, Off, etc.

Other settings are basically defaults and I usually use a Constant quality between 19-21 for 720p and 1080p material.

Thanx in advance.

[johns0]

Read over the trellis(vidcoder) and it will tell you it gives you 3-5% more compression at the cost of some speed,always on means it will be use in encoding and analysis modes,encode only means it used during the encode mode.

[LigH.de]

According to what I read in the Wikipedia article about Trellis quantization, it is supposed to find the optimum. So if I were interested in quality as good as possible, in the given limits of bitrate, I would use it.