What about Adaptive quantize matrix

[Axlemar]

Now that the newer CCE SP uses Adaptive quantize matrix, will changing the matrix manually affect the encode at all or would cce override it. Also, won't I get higher quality if I let cce use Adaptive quantize matrix so that it can best select the matrix?

[wmansir]

You may find better answers about how well AQM works in the CCE forum. It is one of the new features I'm interested in, but I haven't investigated it myself.

As far as DVD-RB and AQM, I haven't looked but I doubt jdobbs explicitly enabled it in the ECL files because it is an untested feature. But it could be enabled by default (CCE has done stranger things). You can check by loading an DVD-RB generated .ecl file into CCE and seeing what's set and what's not.

[Video Dude]

According to the CCE manual, AQM is incompatible with some DVD players. Blockiness can be a side effect of AQM on some players.

[Axlemar]

I loaded an ecl file processed by the latest rebuilder (.80 Pro) and it appears that AQM is on by default. It would also seem that somebody had already figured that out because rb-opt has the option to disable it, just in case nobody knew already. So people probably shouldn't mess with the matrix if they have a newer version of CCE then?

[jdobbs]

The new version changed the .ECL file considerably, but still has the capability to load previous .ECL files. The parameter "adjust_q_matrix" was never there previously and curiously enough, although it was a new feature with possible problems -- it seems to have been enabled by default.

I've done a lot of DVDs with v2.70, however, and I haven't seen a problem yet... but just to be sure I'll add "adjust_q_matrix=0" to ECLs in DVD-RB version 0.81.

[Morbo]

I like it,it seems to preserve film grain a bit better on a test disc of mine,....and makes motion scenes less blocky at the same time(and bitrates).

Kudos to whomever suggested it(and of course to you Dobbs).

[Axlemar]

I think that you should just add the option to have it on or off in rebuilder so that people can test it to see if it is at the root of some of their problems or not for future reference. (The root of my question was not to disable it but to ask if using custom matrices would overwrite AQM or be overwritten by AQM.

[jdobbs]

It brought out a good point, though, because I had operated under the assumption that I would have to turn it on to enable it... That, of course,isn't the case.