Same results with divx 3.11 as with divx 5 - why use it?

[prom3theus]

Is there really something here I'm missing that would make divx 5 so much better? I have used divx 3.11 inside of aviutl for a long time now, using scene change detect in aviutl. Aside from the speed of using say dvd2avi directly into divx5 without a wrapper file (like vfapi), I don't see much advantage yet. I've tried 2 pass using default settings and notice no difference as single pass at the same settings. I've also tested on divx 3.11 and gotten roughly the same file size (within a few %). The only limitation really to aviutl is that it doesn't have a noise detection that I know of, so sometimes in a tough encode there can be pixelization.

The only advantage I've seen really is the increase in maximum bitrate which was long overdue. Does divx5 have any internal anti-noise filters like what you can select in nandub?

Are the default settings just really not that good, or is there really not that much difference to us people who really are not trying to get that incredibly awesome encode to save 10 or 20MB?

[Fox Mulder]

Forum rules - last revision 04/29/02

Welcome to Doom9's forum. In order to make your stay as pleasant and constructive as possible please take your time to read through this document, it will help you navigate the pits and traps this community has created for new members ;) These rules can be changed without notice though normally we announce changes via announcement in all the forums.

1) Read up before asking! There are tons of guides, FAQs and each forum has a dedicated Q&A thread with additional info.

1a) Use the search function before posting. Chances are your question has already been answered.

2) Respect the netiquette: Lurk and get to know the forum before you post.

3) Keep the focus: Questions outside the scope of a certain forum will either be moved, locked or simply be deleted.
[...]

[BluDChyLD]

well theres the implemenation of b-frames which add about ten to fifteen percent of compression to the movie with very little quality loss. GMC doesnt do much and qpel can cause problems. Psychovisuals can also improve picture quality a lot aswell. Plus it's a lot easier to get good results with. Use doom9's GK guide and see the differance for yourself :)

[shadowrunner]

Just use WMV9 aka Corona when it comes out this Fall. I think September is when its gonna be released...

[midiguy]

Originally posted by shadowrunner
Just use WMV9 aka Corona when it comes out this Fall. I think September is when its gonna be released...

why do you say that? M$ always builds up a hype when they release something.. chances are it will suck.. but you never know..

[shadowrunner]

wmv8 looks better than vcd IMHO... and if wmv9 is 20% better and I can watch it on my TV using the Pioneer DVD unit then what more do you want?
I dont see DVD units coming out yet that support mpeg4, all I have seen is that Archos Jukebox thing?
Hope we see DVD units coming soon that use mpeg4 :)

Originally posted by midiguy


why do you say that? M$ always builds up a hype when they release something.. chances are it will suck.. but you never know..

[prom3theus]

Fox, I'm not a new member, I've been using doom9's site for a long time now for capturing/converting info. I did a search and I haven't seen any good comparisons between divx3.11 using a 3rd party prog and divx5. Maybe there's some thread out there on this but I didn't find it. I *did* do some different encodings and I had mixed results on long files. I encoded some star trek NG episodes and they encode FANTASTICALLY well in divx5, with file sizes around 200MB at 384x288 with 64kbps mp3 audio. However, for something like Seven, I ended up barely being able to get it to 2 700MB files (the frame size on Seven is just really screwed up, they squeezed it tighter than normal WS so you get a really skinny bar unless you chop it horizontally, resulting in a lot of pixels for a thin sliver of video). I don't really have the time on my computer to try multiple encodings of 2-hour videos to test what the results are.

The scanning in divx5 is screwed up as well. The audio plays and the video has to fast forward to catch it, which seems backwards. You generally don't have to scan through 10 seconds of audio to decode the current frame, so why not have video seek, then find the current then make the audio catch up and synch? I don't know I don't program a/v apps.

I also noticed that I don't get any macro blocks with divx5, which I'm guessing with scene change detection I won't need any third part program for video. It just really sucks that dvd2avi has to go and reset all of your settings every time you load up a new set of vob files.

[tripnotik]

Are you saying that plain divx3.11 without Nandub produces good quality????????????? Man, you must be blind or something! Come on, there's macroblocks everywhere, shitframes once in a while. The first rip I've ever done was with flask and divx3.11 (The Matrix), and it took 2 CDs and doesn't even look good. Now I could do it on one CD with divx5 and it would look better. The only thing that made divx3.11 look good was Nandub, without it, it's just a crappy codec.

[prom3theus]

No no, what I said was that with a third-party program (like nandub or aviutl or something which has say scene change detection or macroblock prevention) that I was getting comparable results. I still use divx3.11 with aviutl using the aviutl scene change detection. For movies now I will probably use divx5 just because using it straight from the decoder results in about 2x the encoding speed as using vfapi into aviutl with its scene change detection.

I still however have audio synch problems using dvd2avi at FILM frame rates. So I guess I gotta find a new decoder now so I don't have to screw around to get the audio to synch up correctly.

[midiguy]

Originally posted by prom3theus
No no, what I said was that with a third-party program (like nandub or aviutl or something which has say scene change detection or macroblock prevention) that I was getting comparable results. I still use divx3.11 with aviutl using the aviutl scene change detection. For movies now I will probably use divx5 just because using it straight from the decoder results in about 2x the encoding speed as using vfapi into aviutl with its scene change detection.

I still however have audio synch problems using dvd2avi at FILM frame rates. So I guess I gotta find a new decoder now so I don't have to screw around to get the audio to synch up correctly.

Many people like myself believe that DivX 5 just blows nandub w/ divx 3.11 away (although some people think differently). What you are talking about in aviutl, its scene change detection, that is all it does. detect scene changes and insert keyframes accordingly. other then that, it is still just the vanilla DivX 3.11 codec... if you are going to use DivX 3.11, use it with nandub.. but my personal opinion still remains that DivX 5.02 blows all away (for now ;) )

[shadowrunner]

I think WMV9 aka Corona will beat Nandub and DivX5.
And I know I will be buying the Pioneer DVD unit that supports it to ;)

Just my .02