Gordian Knot & Divx 5.02 quality question...

[DeVNuLL]

I was just wondering what so called "rules" that people have when encoding with Gordian Knot and Divx Pro 5.02, as to when they would go for more then one CD (700MB)?

Like do some of you do two CD encoding of a movie if it is over a certain amount of time? or if below a certain bitrate, to try and increase it?

Thank you in advance,

Devnull

[manono]

Hi-

For me personally, it's got nothing to do with the length of the movie or the bitrate. It has much more to do with the results of the compression test and the resolution I want to use. It also has to do with how much I like the movie whether or not I go to 2 CDs, higher resolution, AC3 audio, Director's Commentary, etc. But I'm sure others have different opinions. Some will always use 2 CDs and AC3 audio. Some will always try and use 1 CD with MP3 or OGG audio.

[Mac Sidewinder]

I agree with Manono - If I can't get at least 60% in the compression test, or if the movie is one of my all time favorites with a great soundtrack, then I will go for 2 cds with ac3 sound. Otherwise its normally one cd with mp3.

Mac

[Rash]

MP3 at which quality? I can't usually get 60% (sometimes not even 50%) at 128Kbps. So I usually use 112 or 96 and try to stay around 55%-60% (because I use Convolution3D).
Anyway, I never go below 700xYYY. If I don't like the movie that much, then I keep this res, 1CD even if the Comp Test was not good. ;)
But I do want a suggestion with MP3.

[DeVNuLL]

I know this is getting kind of off topic, but what the hell is Convolution3D?

Thanks

[jggimi]

...what the hell is Convolution3D? Answers available here (http://forum.doom9.org/search.php?s=&action=showresults&searchid=974098&sortby=lastpost&sortorder=descending) and here (http://forum.doom9.org/search.php?s=). Additional information here (http://forum.doom9.org/forum-rules.htm).

[DeVNuLL]

Was just searching after posting :)

[OvERaCiD23]

I always go for 2 CDs w/ AC3. I'll even go to 3 CDs for movies like SPR and 'Minority Report' (due to the added 'film grain', compressibility is horrible and I wanted the AC3 tracks). I'll do 1 CD for a few movies, like 1.5 hour comedies that don't need AC3 and are very compressible.

[Bro]

if a movie is longer than 2hours....it will be very hard to make a descent 1cd-rip. thats for sure ;)
I usually go that far, but more than 2 hours....won't be no good....

[curna]

Just a question about the "Compression test".

A lot of people just tries to get 80 or 90% in the compression test. This will asssure you a good quality.

However, I've come to some movies (fro example Pi) that with a compression test of nearly 30 % the results where very good for my eyes.

What I try to say is that the "compression test" only gives an idea of the number of bits used over the total number of bits that the codec can use. But it has not always to do with "visual" quality.

The "visual" quality it's not linear. It may happens that using a 30% or a 60% of the codec capacity you could not see a lot of differences in the visual result. But with some other films you could have a very big "visual" improvement by going from a compression test of 50% to a one of 70%.

So, I think the compression test it's not either an ultiamte tool to decide what resolution or the number of CD's you want.

That's are my 2 cents.

[valnar]

For 2 hour movies that you want to fit on one CDR, I am personally waiting for this drive:
Plextor Premium 52X (http://www.cdrinfo.com/Sections/Articles/Specific.asp?ArticleHeadline=CeBIT+2003+Show+Coverage&index=10)

984MB should do it!

-Robert

[N_F]

Originally posted by curna
So, I think the compression test it's not either an ultiamte tool to decide what resolution or the number of CD's you want.
It's not the ultimate, but it's the best non-visual we got. ;) But I do agree with you, if you notice getting a very low percentage, always check the visual quality before taking the step to 1 or 2 CDs more.

(BTW, it's no good staying in 80-90%, you'll end up with undersized files on many occasions).