Progressive before Interlaced after encode why?

[syzygytec]

I have to examples here 2 backups both encoded in cce 2.67 with Progressive Frames, ZigZag and DCT 10 checked in the template settings.
In each I have shown the original VOB readings as seen by bitrate viewer compared to the finished vobs.
Both started out as Progressive frames, and one came out as Interlaced
What I am curious about is should the finished vobs match the original?
Should I look at the original vob readings and learn what they mean and translate it to my cce template settings to achieve the same output readings as the input files?
How important is any of this?
Are either of these movies encoded wrong?
Is Biterate viewer accurate?, if not please recommend another analyzer.
Thanks



Example 1 Original VOB's

DCT precision: 10
Pic. structure: Frame
Field topfirst: Yes
DCT type: Frame
Quantscale: Linear
Scan type: ZigZag
Frame type: Progressive

Example 1 Encoded VOB's

DCT precision: 10
Pic. structure: Frame
Field topfirst: No
DCT type: Frame
Quantscale: Nonlinear
Scan type: ZigZag
Frame type: Progressive


Example 2 Original VOB's

DCT precision: 10
Pic. structure: Frame
Field topfirst: Yes
DCT type: Frame
Quantscale: Nonlinear
Scan type: ZigZag
Frame type: Progressive

Example 2 Encoded VOB's
DCT precision: 10
Pic. structure: Frame
Field topfirst: No
DCT type: Frame
Quantscale: Nonlinear
Scan type: ZigZag
Frame type: Interlaced

[Matthew]

Originally posted by syzygytec
please recommend another analyzer.

With VobEdit you can check the details for each I-frame.

[sh03z]

what is a VOB analyzer?

[syzygytec]

@sh03z http://mpucoder.kewlhair.com/Derrow/

Hmm lots of info from vobedit, may as well be egyption.

[sh03z]

so does it help you pick settings for CCE?

[Matthew]

Look for each [Video Pack][GOP][I}, every 12 or 15 video frames.

Click on it and scroll down to bottom of info on right and it should be fairly clear.

"progressive frame:0" (second last line), for example means the frame is marked as interlaced (the old 0 = false and 1 = true).

"alternate_scan:0" means zig zag

And so on.

Obviously you don't need to check every frame, AFAIK bitrate viewer looks at first frame in stream only, this way you can check 2nd and 3rd etc.

[sh03z]

oh k, neat program.

I'll check it out more later...

[sh03z]

@ Matthew - I could not find all that stuff...

What I did find was something interesting....
Tools, check GOP structure, save as TMPG template.

Perhaps would this be used for de-interlacing movies in TMPEG???