Mpeg1 vs Mpeg2 capturing

[kenmo]

The only advantage I can see of Mpeg1 vs Mpeg2 is I can frameserver a Mpeg1 capture via VDub to Tmpgenc. VDub will NOT open a Mpeg2 capture for me.

1) Can anyone here frameserve a Mpeg2 capture via VDub and if YES, how do you do it.

2) Any other pros or cons of Mpeg1 capturing vs Mpeg2. Most of the time I capture to an avi as my end goal is a svcd but what if the capture is too big for an avi ? Then I capture as an Mpeg1 at the hightest bitrate my card will support.

Between www.corvetteforum.com and here, I'm spending TOO much time !

Cheers and Happy New Year !

[Craig Tucker]

Vdub is not compatible with mpeg2. The main advantage of mpeg2 over mpeg1 is that it supports interlacing.

[Nelson37]

Use DVD2AVI to create a D2V project file. Open that with AVISYNTH and MPEG2DEC.DLL. Vdub will open the AVS file.

If you are going to edit, also strip the audio as a WAV file, open that with the AVS file in VDUB. Edit and frameserve.

[telemike]

I tend to use MPEG-I since at the same bitrates (1400-2000) it is as good or better than MPEG-II

[SatStorm]

You can open mpeg 2 with vdub. Just use DVD2AVI to frameserve and VFAPI to convert the d2v file to a fake avi. This fake avi (very small in size, like d2v from DVD2AVI) can be opened withno probs from any vdub version.

Mpeg 1 and Mpeg 2 are the same when you output progressive. In a way, a progressive Mpeg 1 is a "nude" Mpeg 2.
The main difference is the mpeg 2 interlace support.

[Xtasy2002]

I tend to use MPEG-I since at the same bitrates (1400-2000) it is as good or better than MPEG-II

Really? I find MPG1 to be far blockier than MPG2 at the same bitrate for each. When playing 2 clips of the same video, same bitrate, MPG1 seems to lose far more detail in the image, is blurrier, and you can visibly see artifacts not present in the MPG2 video at the same points. Maybe it's just me then?

[chewyshaun@hotmail.com]

There is no way mpg1 can be better than mpg 2

[metoo2]

Use Tmpeg or Dvd2avi to open your mpeg2 file and then save to avi. If you want, then you can open the avi with vdub and edit that.

I prefer mpeg2 over mpeg1, but once you create that mpeg2 file, editing it is a major nuisance. Have you tried to capture to avi and then convert to mpeg2?

[telemike]

I compared an MPEG-1 @1400k and a CVD MPEG-II @1400k captured using powervcr2 and the mpeg-1 looked better, way better at 1400K. During stills the CVD looked great, but the slightest motion set off major blocks. I did make a 480x480 SVCD at 2600K of a cartoon (hamtaro) and it came out really great but i have not done an MPEG-1 at that. I have converted a divx of ice age to 1750K XVCD (using TMPGenc) and on my 43" HDTV it looks as good as dvd. Perfect picture. (the divx source was the best i ever saw)

[fmctm1sw]

You can open mpeg 2 with vdub. Just use DVD2AVI to frameserve and VFAPI to convert the d2v file to a fake avi. This fake avi (very small in size, like d2v from DVD2AVI) can be opened withno probs from any vdub version.

Mpeg 1 and Mpeg 2 are the same when you output progressive. In a way, a progressive Mpeg 1 is a "nude" Mpeg 2.
The main difference is the mpeg 2 interlace support.

Hooray! The mpeg-1 and mpeg-2 war again! I havn't checked this but my VCDs are all progressive after I make them then?

[Craig Tucker]

Yes, you can not have an interlaced VCD

[SatStorm]

VCD is mpeg 1 and mpeg 1 is progressive
SVCD use mpeg 2 so it can be progressive or interlace. You can choose with mpeg 2 what to use.

Progressive looks better on monitors and on HDTVs
Interlace looks better on TVs

In theory, mpeg 1 and a progressive mpeg 2, produce the same results if you use the same source, the same bitrate and the same framesize.

But, if you compare low bitrated mpeg 1 with an interlace mpeg 2 with the same bitrate and the same framesize, mpeg 1 looks better. This happens because an interlace output needs in praxis a bit more bitrate than a progressive output.
This in theory shouldn't happen, but it does for various reasons, like encoder's limitations (For example: TMPGenc's author once said that he want to implement field encoding, since TMPGEnc does only frame encoding)
With higher bitrates, this difference in praxis is eliminated.

The only way to have interlace output to VCD's resolution (352 X 288/240) is goin -X- and use an interlace source. One good solution is sefy's SxVCD template, which you can found on the tools section of this site. This template creates xSVCD with VCD's picture framesize and bitrate, with interlace output if you want.
In a mainstream PAL TV, interlace output even to this framesize does a difference! Colours look better and the overall picture is more smooth.

This is my opinion. Others may have other

[Sefy]

@SatStorm, I think i'm gonna hire you to do my publicity, i'm honoured that
you think so highly of my SxVCD Templates! thank you!

[SatStorm]

Hi Sefy!
This SxVCD of yours, have many benefits as an alternative!
- With the correct GOP stucture it is DVD-Video compatible
- With an average bitrate about 1300 - 1500 you can have perfect picture in extreme difficult analogue sources.
- If the source is interlace and the output is interlace, then it is for real VHS quality! Not VHS-like quality, as it is with VCD.
- Also, if you output interlace, the picture don't have this blurness VCD has. This is way important for PAL right now.
- My tests show me that mpeg 2s with lower framesizes/bitrates, SxVCD - like, are the best alternative for older VHS to CD/DVD convertion the easy way.
- TMPGenc seems to like SxVCD! Who knows why....
- SxVCD is fast. Fast as VCD, but with better quality
- SxVCD is a fair compatible -X- template. After VCD/SVCD/CVD it comes first in my list for compatibility. Slighty less CVD's one.

I has and other benefits, which now I can remember.

You gave a great alternative solution to our hobby enthousiasts. For all of us, the hobbiests, we thank you!

[mats.hogberg]

I compared an MPEG-1 @1400k and a CVD MPEG-II @1400k

You're comparing apples and pears. A CVD has twice the # of pixels to cater for - so macro blocks will be more prominent in the CVD at the same (for the rez) low bit rate.

/Mats

[Fifou]

Hmm.. excuse me but I think the new version of VDub has MPEG2 support.
so you can open your files directly into vdub. Even .VOB files !

[SatStorm]

It is a modified version of Virtualdub.
The original reliease is only for Avi and Mpeg 1.

Personally, I use the modified version, which works amazing with mpeg 2. And fast: The browsing is like DVD2AVI!

[Sefy]

@SatStorm, what can I say, I didn't know it was that good, i've just released
to Baldrick an updated set of the Templates, but if you want, just email me
and I will send them directly to you.