speed differences dvd2avi and DGMPGDec

[Kilyan]

Hi!

I am using cce 2.67.00.27 with:
1) dvd2avi 1.76 by LOLI.J, modified by dvd2svcd 1.05 / Chatwalker 1.00
with MPEGDecoder.dll (both coming with dvd2dvdr professional 2.1.0)
OR
2) DGMPGDec 1.2.1 with DGDecode.dll (coming together)

Avisynth version 2.55 (but other versions too are installed, this was last)

I use the same settings for both Dvd2avi and DGMPGDec.
Source is PAL dvd, no matter which one.
Script for dvd2avi 1.76:
LoadPlugin("C:\Program Files\DVD2DVD-R Professional\MPEGDecoder\MPEGDecoder.dll")
MPEGSource("D:\Title.D2V")
ConvertToYUY2(Interlaced=False)

Script for DGMPGDec 1.2.1:
LoadPlugin("c:\DGMPGDec\dgdecode.dll")
mpeg2source("h:\Title.d2v")
ConvertToYUY2(Interlaced=False)

I get 2.2 at max speed in cce with dvdavi 1.76
I get 1.5 at max speed in cce with DGMPGDec 1.21

What makes the difference?
Is it better to use the DGMPGDec 1.21 for some reason? Does it give better picture or something else with slower speed?
Normally newer is faster/better no?
Is the dll which gives such a difference or the app itself?

Thanks for any reply

[Nic]

Use DGDecode. I never finished MPEGDecoder and it can have problems. MPEGDecoder is based on libmpeg2, that's why it's quicker. But it doesn't deal with fields as well a DGDecode.

-Nic

[Kilyan]

Thanks.

[Kilyan]

But why do they use Mpegdecoder.dll in dvd2dvd-r then?

[Nic]

Because it is quicker, and when it doesn't have problems, it's great. But if you want frame accurate seeking, have filters that require frames outside of the frames that get automatically buffered or have a MPEG stream with RFF flags (i.e. a lot of NTSC streams) then it's a bad idea.

I did come ever so close to making a fully working version of MPEGDecoder. But it wasn't really much faster after I put in all the code for the RFF.

Cheers,
-Nic

[lucindrea]

a little off topic but .. i must of searched for about 10 differnt search keywords and read about 50 posts before i found a sample avs script for cce from dvd2avi ( dgmpdec ) ... turns out i find it in a thread talking about speeds of them.

[neuron2]

Ah, it's reassuring to see our Search capability working so well.