Nero Recode 2 released!

[Doom9]

the subs nero puts into .mp4 are not mpeg-4 spec compliant and will only be shown in their own players
Same goes for the chapter information.

and did i already say that i hate it if progs steal extensions I'm with you on that.. all my media files are now labelled "Nero ShowTime Files" and I'm not particularly fond of any player but WMP and MPC. At least ShowTime also plays DVDs but I wished I were asked if I really wanted to make those changes.

[bobololo]

I'd like to bring some clarifications about ND mp4 files, Subtitles and Chapters support as it seems to generate much discussions, lack of understanding, etc. I hope this could enlight you on the way it is done and why.

Basically, the mpeg-4 standard doesn't specify a way to handle subtitles and chapters. That is to say the notion of movie subtitles and chapters doesn't exist in the standard. From that assumption, there is no reason to say subtiltes or chapters are ISO compliant or not since there is no spec for this.

However mpeg-4 is a very rich standard and provide several tools one can use to implement the support of subtitles and chapters. For the subtitles, we can have :

- 2D BIFS
- Streaming Text Format (14496-17)
- private data

The first approach (2D BIFS) consists in the use of the complex mpeg-4 system layer to describe a presentation composed of multiple objects (audio stream, video stream, 2D bitmap, etc.). In the absolute this should be the best way to implement subtitles. However, due to its complexity it would involve a lot of work for us which simply means more delay before the release ! Beside this constraint, we were also faced to the fact that such complex system management would become a real headache on embedded platforms (ie standalones) were resource are extrexemly limited. Therefore a fast adoption of MP4 format in this area. Just imagine us telling standalone manufacturers : to support MP4 it's quite easy, just read the 1000 pages of mpeg-4 BIFS system standard, then make it fit in your 16 kB of memory and you'll get it ! You'll understand that solution was not reasonable for us and that's why we prefer in our first stage to not use this implementation. But in futur evolutions, the addition of new features like menus, interactivity, and with the spreading of more powerful chips, we may seriously consider this solution.

The second solution "Streaming Text Format" is a new part of the standard not approved yet. It uses text data rather than bitmap for the subtitles and relies on the previous system layer. Considering subtitles in DVD are bitmap it would require some OCR process. In conclusion this solution is even harder to implement (imagine bitmap to unicode conversion for chinese or arabic language !). So we coulnd't choose this way.

And finaly the last solution uses mp4 file user data to store our info. Since the mp4 file provides private data space, we simply put our compressed data here. These user data must be discarded by decoders that don't know how to handle them so that shouldn't hurt.
This was the best compromise we found and basically this doesn't differ much from other system like vobsub which stores data in a file beside.

For the chapter list, we applied the same recipe since there was no really other mean to achieve this.

I hope this clarify a little bit things and help you to understand why these choice were done.

And last but not least, for those who are concerned about ND MP4 files support on their standalone, be sure we're making much efforts in promoting ISO MP4 support in standalones. Discussions are on the way and hopefuly mp4 support will come quite soon.

[Longinus]

MPC (v6.4.7.2) can only play the video stream. The following 'Warning' appears: -

I guess Recode2 does not like the Core AAC DS filter I've installed. When everything else does!


Get the newest CoreAAC DS filter....

[SeeMoreDigital]

Originally posted by Longinus
Get the newest CoreAAC DS filter.... I thought I had the newest version. But it turns out it wasn't!

It turns out that v1.0b8 does the trick.

Thanks

[unixfs]

Originally posted by bobololo

And last but not least, for those who are concerned about ND MP4 files support on their standalone, be sure we're making much efforts in promoting ISO MP4 support in standalones. Discussions are on the way and hopefuly mp4 support will come quite soon.

Good, but in the meantime I want to use my standalone without buying
another one.
I tried to remux the MP4 file to avi,
but it seems that neither ffdshow nor ffvfw can decode the video stream.
Arent XVID and LAVC compatible with Nero's MP4V?

Since Nero is already able to encode to mp3, why doesn't Recode
give the option to encode to mp3 or wav or to embed the original AC3? Or to mux to AVI?

Quality and speed seem to be good; I like the product, but
the current limitations make it unusable for me;
I'll stick to xvid until ND can generate AVI files.

Thanks.

[SeeMoreDigital]

Originally posted by bobololo
And last but not least, for those who are concerned about ND MP4 files support on their standalone, be sure we're making much efforts in promoting ISO MP4 support in standalones. Discussions are on the way and hopefully mp4 support will come quite soon. Are you able to clarify which standalone manufacturers you will be talking too please?

Many people with standalones will be relieved to know!

Cheers

[bobololo]

Originally posted by unixfs
Good, but in the meantime I want to use my standalone without buying
another one.

Your standalone could receive a firmware update to allow this support.


I tried to remux the MP4 file to avi,
but it seems that neither ffdshow nor ffvfw can decode the video stream.
Arent XVID and LAVC compatible with Nero's MP4V?


Quite strange, AFAIK our mpeg-4 video stream should be decoded correctly with libavcodec (ffmpeg). Several people reported me they succeeded doing that. What do you get exactly ? Maybe it's just a FOURCC issue ?


Since Nero is already able to encode to mp3, why doesn't Recode
give the option to encode to mp3 or wav or to embed the original AC3? Or to mux to AVI?

Quality and speed seem to be good; I like the product, but
the current limitations make it unusable for me;
I'll stick to xvid until ND can generate AVI files.

Thanks.

Well this are some marketing strategies I won't discuss here. However I've just an inquiry. Suppose you get mp4 support on your standalone, considering mp4 provides subtitles, chapters, he-aac, asp, menus, and support for future h.264 codec. Is there any good reasons to get stick with AVI ?

[Doom9]

Is there any good reasons to get stick with AVI ?With a vfw codec (even Microsoft is offering one), you can use all the AVI editing tools on the market. It will take years for another container to ever get the same kind of support. If you're into video editing these days there's just no way around AVI. Editing anything else is cumbersome (okay, we do have VDubMod which supports OGM and Matroska so at least there we have some flexibility, but it's far from all the tools that support just AVI).

[unixfs]

Originally posted by bobololo
Your standalone could receive a firmware update to allow this support.



I hope it, but I won't believe it until I see it.
My player is an el-cheapest Nortek NDVX 100, based on ESS Vibrato I chipset.


Quite strange, AFAIK our mpeg-4 video stream should be decoded correctly with libavcodec (ffmpeg). Several people reported me they succeeded doing that. What do you get exactly ? Maybe it's just a FOURCC issue ?


I changed both in VDUBMod and in Avichange, but no version of
VD could decode the content.
My ffvfw is a build dated 20032810.


Well this are some marketing strategies I won't discuss here. However I've just an inquiry. Suppose you get mp4 support on your standalone, considering mp4 provides subtitles, chapters, he-aac, asp, menus, and support for future h.264 codec. Is there any good reasons to get stick with AVI ?

None. I'd switch immediately to ND.

[ChristianHJW]

Originally posted by Doom9 With a vfw codec (even Microsoft is offering one), you can use all the AVI editing tools on the market. ... this is, until you get hold of an AVI with Vorbis or AAC inside. Its maybe possible to hack this stuff into AVI using special programs like avi-mux GUI, nandub or vdubmod, but there is no way to support a VBR audio stream via the ACM API, so any normal video editor will just fail on these kind of files, and AVIs 'great wide spread editing support' is pointless ....

[SeeMoreDigital]

Originally posted by bobololo
...Suppose you get mp4 support on your standalone, considering mp4 provides subtitles, chapters, he-aac, asp, menus, and support for future h.264 codec. Is there any good reasons to get stick with AVI ? Talking about supporting subtitles, chapters, menus etc is one thing. But as you've said yourself "the mpeg-4 standard doesn't specify a way to handle subtitles and chapters" so handling menu's is probably not specified too!

As you may already be aware, bond (one of our moderators) has been working on how to create a menu (http://forum.doom9.org/showthread.php?s=&threadid=66583). I think it would make sense to adopt some kind of a standard that would work for both software and hardware player users!

Also bearing in mind that the Sigma Xcard is the only current way of decoding MP4 container files, you may find it helpful to obtain one of these cards to test with your product.

Cheers

[bond]

Originally posted by SeeMoreDigital
so handling menu's is probably not specified too!
As you may already be aware, bond (one of our moderators) has been working on how to create a menu (http://forum.doom9.org/showthread.php?s=&threadid=66583).mp4 files produced with my mp4menu are 100% compliant to the mpeg-4 systems standard (which allows already the creation of subtitles, chapters and menus in mp4 as mp4menu already prooves)

Originally posted by bobololo
The first approach (2D BIFS) consists in the use of the complex mpeg-4 system layer to describe a presentation composed of multiple objects (audio stream, video stream, 2D bitmap, etc.). In the absolute this should be the best way to implement subtitles. However, due to its complexity it would involve a lot of work for us which simply means more delay before the release ! Beside this constraint, we were also faced to the fact that such complex system management would become a real headache on embedded platforms (ie standalones) were resource are extrexemly limited. Therefore a fast adoption of MP4 format in this area. Just imagine us telling standalone manufacturers : to support MP4 it's quite easy, just read the 1000 pages of mpeg-4 BIFS system standard, then make it fit in your 16 kB of memory and you'll get it !yes mpeg-4 systems is quite complex as it offers much more than only chapters, menus aso...

but just because it offers much possibilities it doesnt mean that decoding needs much processor power at least thats what jeanlf from gpac/enst said. according to him the decoding of such content should be already possible on existing standalones cpu wise


it somehow seems to me that developers are just to lazy to implement the big mpeg-4 systems standard in their products and prefer hacking own easier standards into mp4 (yes i know private data is allowed blabla...) :p
they simply fear to touch bifs...

[SeeMoreDigital]

Originally posted by bond
mp4 files produced with my mp4menu are 100% compliant to the mpeg-4 systems standard (which allows already the creation of subtitles, chapters and menus in mp4 as mp4menu already prooves)... Well that's good to know.

Lets hope the guys at Nero will adopt your 100% compliant approach and maybe even adopt your application in some way!

Keep up the excellent work. Cheers

[riggits]

(edit: I am UNABLE to preview the video in Recode2, nor can I watch my encodes in the ShowTime. NeroDigital movies only work in QuickTime, which doesn't even post-filter the video, so it looks like pure $hit. Reinstallation after elimination of all registry entries of Nero didn't fix the problem.)


does anybody know how to display the video part of a NeroDigital-encoded movie?? I encoded my video using Recode2, and got an MP4 file which won't play in anything other than QuickTime.
I tried Nero's own ShowTime, and it plays the audio fine but won't recognize the video part at all. The option Preferences->Video->"Hide video window" is unselected. Here are the errors from my other video players:
WMP 6.4: "Unable to download an appropriate decompressor. (Error=80040200)
No combination of filters could be found to render the stream. (Error=80040218)"

WMP 9: just plays audio, but no video.

Media Player Classic 6.4: cannot render any of the streams (the error messages are huge, and there are many of them)

WinAmp 5: only plays audio

.. anybody know what might be wrong here??
It's possible that I just don't have the NeroDigital decoder installed, but wouldn't that be included in the brand new ShowTime??

(edit2: I installed Nero (the full retail package) on another computer, and ShowTime plays the video, kinda. The thing is, it looks like it's only playing the keyframes - nothing in between. Also, no post-filtering is going on. My other media players hang upon trying to open the NeroDigital files. I have no idea what's up, and Nero's support site contains nothing remotely relevant)

[Doom9]

... this is, until you get hold of an AVI with Vorbis or AAC inside. Its maybe possible to hack this stuff into AVI using special programs like avi-mux GUI, nandub or vdubmod, but there is no way to support a VBR audio stream via the ACM API, so any normal video editor will just fail on these kind of files, and AVIs 'great wide spread editing support' is pointless ....I'm fully aware of that, yet the video world is centered around just that format. We're in the lucky position to be able to choose, but if you're working with an NLE tool, AVI is basically your only shot. And if you want to change AVI's domination I believe you have to get the Adobes and Uleads of this world to start using something else because that's where the money is.

[unixfs]

If Ahead is serious about establishing
a standard format, they should provide at least some editing/cutting/merging
tool for MP4 files, maybe in the form of an extension of VdubMod.
There isn't anything like this in the packages released sunday.

What (commercial) software can edit MOV files? Will they be able to edit ND's MP4s?

[Doom9]

What (commercial) software can edit MOV files? Will they be able to edit ND's MP4s?Quicktime pro certainly. And QT can edit ND files provided that you use the simple profile (which amongst other limitations seriously limits the bitrate and resolution to areas that are not interesting for us).

[Stux]

Originally posted by Doom9
Quicktime pro certainly. And QT can edit ND files provided that you use the simple profile (which amongst other limitations seriously limits the bitrate and resolution to areas that are not interesting for us).

Well, Simple Profile is actually the set of tools you can use in the encode (half pel etc), where as the levels are the bitrate/resolution.

So you can use an undefined level of Simple Profile and still edit with QT

For example Simple Profile @ Level 3 or Level 2 is still Simple Profile

Of course, some levels prevent the use of some tools, so for example, SP@Level 0 prevents the use of ac prediction and adaptive quantization at the same time (iirc)

[SeeMoreDigital]

Originally posted by riggits
...I am UNABLE to preview the video in Recode2.. I suspect that's part of the reason why I can't play NeroDigital movies.)

Hi! does anybody know how to display the video part of a NeroDigital-encoded movie Well your encodes should certainly play using ShowTime (and WMP9). Maybe you should reinstall Recode2 and try generating some new encodes!

As far as MPC goes. After you've established that your Recode2 encodes play using ShowTime you will need to make sure you've got the newest version of the COREaac DirectShow filter installed. Or you won't be able to listen to the audio - like what happened to me!

Also, you could try playing your encodes using an up to date version of QuickTime.

Cheers

[unixfs]

You can use VLC, which doesn't use dshow codecs and is much lighter.
www.videolan.net

[ThePanther]

Destron & Baalthazaar

Thanks guys for your help, my processor running idle was at 55oC and when running prime95 went up to 75oC extremely quickly. The reason I think is that my case was an old case where the CPU was located almost behind the PSU.

I went out today bought myself a new case, 2 system fans and a new CoolMaster Aero 7+ CPU Fan.

CPU now running at 36-37oC when idle and when running prime95, with Torture test with "In-Place large FFTs (maximum heat etc), the CPU only gets up to 43-44oC.

Nero Digital encode with no problems, no machine resets.

Again guys, thanks a million I would never have checked the CPU Temp.
:)

[KitKat]

So, I'm looking for the following checkbox to uncheck it but can't find it anywhere:

[x] Associate Nero Showtime with all file extensions known to mankind


So what am I supposed to do now? Re-associate by hand all 8341 media types? And mind you, if I ever do that, it'll only be "weak" asociations, the kind that you can't configure, only revert back to what they were "originally" (i.e. Showtime...!!) :mad:

[Jaques]

Originally posted by ThePanther
Thanks guys for your help, my processor running idle was at 55oC and when running prime95 went up to 75oC extremely quickly. The reason I think is that my case was an old case where the CPU was located almost behind the PSU.
Christ! You're lucky that 75oC didn't kill it. Hadn't you ever noticed stability problems before?

[ookzDVD]

@forum,

C'mon let's talk about the result!
Anyone have tried the DVD -> NeroDigital (1CD) ?
How is the result anyway ?

[Jaques]

It looks to me about as good as xvid, but much faster.

[Tuning]

Originally posted by ookzDVD
@forum,

C'mon let's talk about the result!
Anyone have tried the DVD -> NeroDigital (1CD) ?
How is the result anyway ?

I would say its in between DivX and XviD. The detail level is some what better than DivX but not comparable with XviD. (Bcoz XviD preserves high detail :))
Though the bitrate was above 1500k, hence i think at lower bitrate ND will suffer.

I'm still XviD fan!

[ThePanther]

Originally posted by Jaques
Christ! You're lucky that 75oC didn't kill it. Hadn't you ever noticed stability problems before?

No, hever had them, even when enoding to DivX, only seem'd to happen then encoding using Nero Digital.

[bond]

Originally posted by Tuning
Considering speed, even with most settings I could get around 1.5X realtime encoding a 24 fps movie in pass1 and 1X in pass2.(P4-1.4Ghz)beaware when comparing speed with other codecs, that most people use divx5/xvid with avs and mpeg2dec3, mpeg2dec3 isnt really a fast mpeg-2 decoder, the one from recode seems to be much faster...

[bobololo]

Originally posted by bond
beaware when comparing speed with other codecs, that most people use divx5/xvid with avs and mpeg2dec3, mpeg2dec3 isnt really a fast mpeg-2 decoder, the one from recode seems to be much faster...

Also, don't forget that the (HE-)AAC audio is encoded in the same time ;)

Anyway, even recode mpeg-2 decoder is much faster than mpeg2dec3 (which can't be considered as a slow decoder), realize that we're speaking about 5x to 10x (or should I say 500% to 1000% ;) faster for the complete encoding (not a couple of percent).

[gino25]

Is there a possibiliti to use mpeg-2 decoder (of nero recode) in avisyneth?

[riggits]

I finally got a NeroDigital encode to work!! unfortunately it hasn't worked since that time, but the quality was superb. I would say it retained considerably more detail than DivX 5.1.1 with similar settings, even though the speed was practically identical (Recode2 vs. Dr. DivX 1.04)
I wish there was a way to make my movies play every time, reliably.

[SeeMoreDigital]

Originally posted by riggits
...I wish there was a way to make my movies play every time, reliably. Why, what's happening?

That said, people like us experiment with different encoding applications will, at some time, experience instability problems!

If you are suffering such problems, it may be time for you to format your PC and reinstall the applications you like best.... It's surprising what a difference it can make.

Cheers

[Tuning]

Originally posted by bond
beaware when comparing speed with other codecs, that most people use divx5/xvid with avs and mpeg2dec3, mpeg2dec3 isnt really a fast mpeg-2 decoder, the one from recode seems to be much faster...

&
Originally posted by bobololo
Also, don't forget that the (HE-)AAC audio is encoded in the same time ;)

Anyway, even recode mpeg-2 decoder is much faster than mpeg2dec3 (which can't be considered as a slow decoder), realize that we're speaking about 5x to 10x (or should I say 500% to 1000% ;) faster for the complete encoding (not a couple of percent).

pardon me, bond and bobololo. What I posted resulted a childish post.

Edited to correct it.
Thanks.

[ToiletDuck]

Is there a way to split the files once created? I made one to go onto two disk and can't find out how to split them

[bond]

Originally posted by ToiletDuck
Is there a way to split the files once created? I made one to go onto two disk and can't find out how to split them that isnt possible atm

[Jaques]

Originally posted by ToiletDuck
Is there a way to split the files once created? I made one to go onto two disk and can't find out how to split them

For now you're just going to have to set the start and end point to get the size you want, that's the only way I can see how to split it.

[Ishan]

there's a simple way to do a 2CD encode. Just encode half of the chapters as 1CD THEN the other half as 1CD. TDADAAAA u got ur 2CD encode :)

[chilledoutuk]

Ok everyone seems to be talking a lot on this thread but not saying very much.

Let me start something firstly people say you cant to a 2 cd rip well that’s tripe.

All you have to do is this

- select the title you want to encode then add it twice to the encode field.
- Then select the first encode and click on start/end

- in the windows that pops up simply click on the end frame chapter pull down and select a chapter close to the middle(IE if 24 chapters chapter 12) and click ok.

- now select the second title and then again click on start/end when the window appears select the next chapter (i.e. 13) as the start frame and click ok (if you want you can remove most of the credits here as well to save space by adjusting the end frame).

- Now adjust the bitrate of each title until the predicted filesize is as close to the media capacity as possible.

Now setup the rest of the settings as you normally would.

you can of course not use chapters and just find a scene change and adjust the end of the first encode and the start of the second to that.

Now For A major advantage for MP4 over AVI
=====================================

Now we all should know that the majority of 16:9 pal DVDs are 720x576 and that it is simple stretched to correct aspect by specification in the ifo's or the mpeg2 itself.
Well it seems MP4 has inherited this ability and Nero can implement it. This means the same widescreen res as DVDs. (from my tests quality is improved)

Its simple just disable resize in the video settings it will now create a 720x576 (minus any cropping) encode that plays back in perfect aspect.

[chilledoutuk]

hey man ur reading my mind but i made it simple for them.

definetly try the 576 verticle res out it will decrease fps but thats to be expected with higher res's

[Stux]

Originally posted by chilledoutuk
Now For A major advantage for MP4 over AVI
=====================================

Now we all should know that the majority of 16:9 pal DVDs are 720x576 and that it is simple stretched to correct aspect by specification in the ifo's or the mpeg2 itself.
Well it seems MP4 has inherited this ability and Nero can implement it. This means the same widescreen res as DVDs. (from my tests quality is improved)

Its simple just disable resize in the video settings it will now create a 720x576 (minus any cropping) encode that plays back in perfect aspect.

3ivx D4 4.5 implemented this. The good news is the decoder will work with any other MP4 which uses PAR encoding. And yes full resolution anamorphic encodes do look very nice

[ookzDVD]

@forum,

Da*n, it's been a week and I've not got the Nero Encode 2 to work :(
It seems Nero needs new DirectX 9.0a or above :(
hmmmmmm.....

[snowcrash]

Originally posted by KitKat
So, I'm looking for the following checkbox to uncheck it but can't find it anywhere:

[x] Associate Nero Showtime with all file extensions known to mankind


So what am I supposed to do now? Re-associate by hand all 8341 media types? And mind you, if I ever do that, it'll only be "weak" asociations, the kind that you can't configure, only revert back to what they were "originally" (i.e. Showtime...!!) :mad:

I've been looking for this too with no luck. Showtime has taken over all my video file extensions. There is no way to install Recode without also installing this awful Showtime app. How annoying.

[ToiletDuck]

do most of you encode movies at full size? I usually resize and crop them.

[Tuning]

Originally posted by snowcrash
I've been looking for this too with no luck. Showtime has taken over all my video file extensions. There is no way to install Recode without also installing this awful Showtime app. How annoying.
If you are using Media Player Classic then you have to worry no more!.

Go -> options -> formats -> autoplay -> select video -> Apply.

This restores MPC's monopoly over video files!. btw, the icons will not be changed, but double clicking will open in MPC.

Long live MPC! :D

[Jaques]

Originally posted by ToiletDuck
do most of you encode movies at full size? I usually resize and crop them.

No, I alway's crop, no sense in hard coding black bars.

Oh, and long live MPC!:D

[Teegedeck]

These days, with highly efficient (...) audio and video codecs, more and more material doesn't need downsizing.

Long live MPC!

[SeeMoreDigital]

Originally posted by Stux
3ivx D4 4.5 implemented this. The good news is the decoder will work with any other MP4 which uses PAR encoding. And yes full resolution anamorphic encodes do look very nice I affraid can't get this function to work properly!

I would be most grateful if an PAL 720x576 anamorphic test clip could be posted either here on Doom9 or on the 3viX web site.

Cheers

EDIT: Long live Xcard. Oh, and MPC

[gino25]

I' ve ask but noboby reply

It' s possible to use mpeg2decoder of nero digital in avisynth, instead og mpeg2dec3?

[SeeMoreDigital]

I just thought I would confirm my findings so far about generating MP4 container files that work in hardware.

I decided to encoded the same 50 second source file 3 times. First with Sorenson Squeeze 3.5 and again with QuickTime Pro 6.4: -

The Sorenson Squeeze 3.5 results are as follows: -

For the first encode I used - 2pass Mpeg4 video @ 1000kbps and AAC audio at 128kbps.
The encode played OK using both Sigma/XMediaPlayer and Sigma/JovePlayer.

For the second encode I used - 2pass Mpeg4 video only @ 1000kbps.
The encode played OK using both Sigma/XMediaPlayer and Sigma/JovePlayer.

For the third encode I used - AAC audio only @ 128kbps.
The encode played OK using Sigma/JovePlayer. But not at all with Sigma/XMediaPlayer


The QuickTime Pro 6.4 results are as follows: -

For the first encode I used - 1pass Mpeg4 video @ 998kbps and AAC audio at 128kbps.
The encode played OK using Sigma/JovePlayer. But not at all with Sigma/XMediaPlayer

For the second encode I used - 1pass Mpeg4 video only @ 998kbps.
The encode played OK using Sigma/JovePlayer. But not at all with Sigma/XMediaPlayer

For the third encode I used - AAC audio only @ 128kbps.
The encode played OK using Sigma/JovePlayer. But not at all with Sigma/XMediaPlayer

Again Recode2 encodes do not work at all. Ahead/Nero developers, please take note!

If it's this difficult to get MP4 container files to work with just one hardware manufacturers chipset. What is going to happen when MP4 container upgrades become available to 'standalone' player users?

If there are other people out there who are able to post short MP4 container encodes, please do so so I can test them in hardware too!

Cheers

[bobololo]

Originally posted by gino25
I' ve ask but noboby reply

It' s possible to use mpeg2decoder of nero digital in avisynth, instead og mpeg2dec3?

I don't think so, but I'm not sure. Maybe it's possible to connect the video source to the nero decoder filter. So using a DirectShowSource() you may exploit the mpeg2 decoder. Someone will have to try.