changing AR in TAW4 or Womble

[curykuru]

I am not sure if this is the best place to post my question but here it goes.
I am currently trying to change the AR in dvddata files from TAW, without re-encoding. I use Womble to do this but the newly made file is 1s shorter than the original. Is this alright or should I stick with TAW ? It only took 10 min to output a whole DVD with changed PAR

Here is a snapshot from the same frame but in different PAR. Which of them seems most natural ? I am getting confused.
When should I change to DAR and when in PAR ?

[manono]

Assuming these are complete DVDs (IFOs, BUPs, VOBs) and you plan on playing the DVD and not the VOBs, it's easier and faster using PGCEdit. Open the DVD and right-click on the video in question and 'Domain Stream Attributes'. In the new 'Streams attributes' screen change it from 4:3 to 16:9 and Automatic Letterbox. 'OK' your way out of there, save your changes, test and burn to disc

[curykuru]

Thanks for the quick reply. No, they are not complete DVDS, they are ripped with TAW to cut away the commercials etc.
So in other words, no VOBs, IFOs etc.
I know about PGCedit but I cannot use it on ripped files right ?

[manono]

That's right, PGCEdit requires DVD sources. But you're not clear at all when you say:

, they are ripped with TAW to cut away the commercials etc.
So in other words, no VOBs, IFOs etc.

In what format are they? MPG, or something else? If MPG you might use DVDPatcher. If something else you'd have to be more specific, but your current method is probably the best since you get a real DVD back with the corrected DAR at the same time..

[curykuru]

the file extension is *.dvddata which might not be very different from MPG as TAW3 ripped DVDs to MPGs. Have you ever worked with TAW ?

It doesn't matter if I change the AR to pixel or display ?
And is it normal that the new file is 1 second shorter ?

[manono]

the file extension is *.dvddata which might not be very different from MPG as TAW3 ripped DVDs to MPGs.

Sounds like something proprietary to TMPGEnc Authoring Works. I wonder what MediaInfo would make of it.

Have you ever worked with TAW ?

Nope.

It doesn't matter if I change the AR to pixel or display ?

There are two DARs available for DVDs, 4:3 and 16:9. You (apparently) have 4:3 and you want 16:9.

And is it normal that the new file is 1 second shorter ?

I doubt that it is. Anything missing from the end? Any audio going out of synch?

[curykuru]

There are two DARs available for DVDs, 4:3 and 16:9. You (apparently) have 4:3 and you want 16:9.

So I should always choose DAR in TAW right ? Is this also the case when authoring a Blu Ray ?

I don't remember if the cartoon was broadcasted in 4:3 or in 16:9, which snapshot does look more natural to you ?

Sounds like something proprietary to TMPGEnc Authoring Works. I wonder what MediaInfo would make of it.

Yeah, that 's right. In VLC the video clip is 1s longer than mediainfo and womble says.
Here is a text log from the dvddata file I made with mediainfo, is there anything odd to it ?


General
Complete name : N:\Tmpgenc\Yakari\afl 001.dvddata
Format : MPEG-PS
File size : 876 MiB
Duration : 12mn 35s
Overall bit rate mode : Variable
Overall bit rate : 9 733 Kbps

Video
ID : 224 (0xE0)
Format : MPEG Video
Format version : Version 2
Format profile : Main@Main
Format settings, BVOP : Yes
Format settings, Matrix : Default
Format settings, GOP : Variable
Format settings, picture structure : Frame
Duration : 12mn 35s
Bit rate mode : Variable
Bit rate : 9 300 Kbps
Width : 720 pixels
Height : 576 pixels
Display aspect ratio : 4:3
Frame rate : 25.000 fps
Standard : PAL
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Interlaced
Scan order : Top Field First
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.897
Time code of first frame : 00:00:00:00
Time code source : Group of pictures header
GOP, Open/Closed : Open
GOP, Open/Closed of first frame : Closed
Stream size : 836 MiB (95%)
Color primaries : BT.601 PAL
Transfer characteristics : BT.470 System B, BT.470 System G
Matrix coefficients : BT.601

Audio
ID : 189 (0xBD)-128 (0x80)
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Format settings, Endianness : Big
Muxing mode : DVD-Video
Duration : 12mn 34s
Bit rate mode : Constant
Bit rate : 256 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Compression mode : Lossy
Stream size : 23.0 MiB (3%)

Menu

[manono]

So I should always choose DAR in TAW right ?

Like I said, I don't use it, but I know how to choose 4:3 or 16:9 when encoding MPEG-2 for DVD. And how to change the DAR when the DAR in some DVD is incorrect. An educated guess says to use the DAR.

which snapshot does look more natural to you ?

The second or lower one. Better, though, might be to find a scene with something round - a sun, moon, ball, etc.

is there anything odd to it ?

Nothing but the extension, that I can see. It's a common MPEG-TS. You could probably rename it as an MPG without problem.