95.2% Reduction Level

[auldyin]

I have just ripped a disc using AnyDVD and find that for Menu and Feature there will be a 95.2% reduction for DVD5. Thinking that this would be fine I used HC for redistribution and CCE for encoding.
Unfortunately the result is not all that good (I understand the lack of objectivity in this statement) with a distinct lack of clarity throughout the movie.
RB-OPT shows the Bitrate (autosized) to be 5416.

As I am still very much a learner here, can someone advise me about using filters, matrices etc with a view to possible improvement?
Even if this does not result in actual improvement, the experience of using different matrices will be invaluable. Trouble is, I don't know where to start.

[jdobbs]

I guess I'd first have to ask what "lack of clarity" is exactly? Is it something you've noticed in CCE encodes before? Does the original show anything like that? Also, are you NTSC or PAL?

Just for grins, also, could you look at the D2V file for the movie? You'll see lines that look something like this:

d00 6 0 612352 1 1 70 71 d2 f3 f0 e1 f2 f3 e0 f1 f2 e3
900 6 0 980992 1 1 70 71 d2 f3 f0 e1 f2 f3 e0 f1 f2 e3
900 6 0 1398784 1 1 70 71 d2 f3 f0 e1 e2
900 6 0 1589248 1 1 73 70 d1 f2 e3 f0 f1 e2 e3

What value do you see in the second number (the one I've bolded)? Normally it is "1"... but if you see a "6" (as in the example) it may be something to consider.

As for matrices... try adding CCEAQM=1 to the "[Options]" area of REBUILDER.INI? It can tell CCE to auto adjust its matrix for more clarity when you work with higher bitrates.

[auldyin]

Thanks for response.

Just for grins, also, could you look at the D2V file for the movie? You'll see lines that look something like this:

900 1 0 2048 1 1 b2 b2 92 b2 b2 a2 b2 b2 a2 b2 b2 a2 b2 b2 a2
d00 1 0 114688 1 1 32 32 92 b2 b2 a2 b2 b2 a2 b2 b2 a2 b2 b2 a2
900 1 0 268288 1 1 32 32 92 b2 b2 a2 b2 b2 a2 b2 b2 a2 b2 b2 a2
900 1 0 440320 1 1 32 32 92 b2 b2 a2 b2 b2 a2 b2 b2 a2 b2 b2 a2
900 1 0 792576 1 1 32 32 92 b2 b2 a2 b2 b2 a2 b2 b2 a2 b2 b2 a2

All of the lines are like this with the anomaly in bold

I guess I'd first have to ask what "lack of clarity" is exactly? Is it something you've noticed in CCE encodes before? Does the original show anything like that? Also, are you NTSC or PAL?
For lack of clarity I mean that edges seem to be "fuzzy", and I have not noticed it before.The original does not show the problem.
PAL or NTSC will show my ignorance of this subject.....its an American film (PAL I presume) and I live in Scotland (NTSC?)

Cheers

[jdobbs]

PAL is used in most of the world... NTSC is used in the U.S. and a few other places. In Scotland I would assume you are PAL.

Fuzzy around the edges, eh? That's very unusual for CCE, as it is known for sharpness.

Also, I mispoke above. The value of the parameter ("6") is typically "1", not zero (I corrected it for future clarity).

[auldyin]

As for matrices... try adding CCEAQM=1 to the "[Options]" area of REBUILDER.INI? It can tell CCE to auto adjust its matrix for more clarity when you work with higher bitrates.

In the RB.ini, under the [OPTIONS], do I just type CCEAQ=1?
and
Is a bitrate of about 5500 considered to be high? If so, what is considered to be low? (Again, I appreciate the subjectivity here because I am pretty sure the bitrate will be scene dependent)

Many thanks!!

[jdobbs]

Yes, 5500 would be considered high. The answer to "High" and "Low" is very subjective and there could be a lot of disagreement. In DVD-RB's matrix selections I consider anything above 4000 to be high and anything below 3000 to be low. Below 2000 would be very low. These are all based upon the encoders in use and DVD resolutions/framerates.

Yes you just type it in... but make sure you spell it correctly or it will have no impact. it is:

CCEAQM=1

Your post left the "M" off. It can go anywhere on a line of its own after "[Options]" and before the next area (defined by the "[...]" distinction.

[auldyin]

Many thanks!
Will try the OPTIONS thing and post!
Cheers

[auldyin]

Carried out a sort of abx on movie, movie without CCEAQM=1 and with CCEAQM=1.
Wife and son picked out without CCEAQM=1 on seven occasions from 10 as being the "worst looking clips".

Again I understand that such a "test" does not mean much scientifically but, "beauty is in the eye of the beholder".

Don't understand the why's and wherefores and don't think I really need to!!

Thanks for help!!!

[Boulder]

Fuzzy around the edges, eh? That's very unusual for CCE, as it is known for sharpness.I think that's Gibbs phenomenon, aka mosquito noise. As you have plenty of bits to spare in this case, it might be useful to lower the flat part priority/quantizer characteristics setting (I don't remember how it is named in DVD-RB). A lower value means that more bits are allocated to representing the sharp edges in the frame. A higher value would mean that more bits are allocated to the flat areas of the frame.

[auldyin]

it might be useful to lower the flat part priority/quantizer characteristics setting (I don't remember how it is named in DVD-RB)

Can you please advise?

Cheers

[Boulder]

See the CCE settings in DVD-RB, it is over there.

[auldyin]

Sorted!!

Thanks guys!

[cyspur]

Hi every1
Can these settings be done with HC encoder too?

[Boulder]

HC doesn't have a flat part priority setting (yet).

[cyspur]

thank you Boulder