AutoGK 1.22b - Forced AR for 352x480 materials

[henryho_hk]

I am trying AutoGK 1.22b on my half-D1 DVDs again.
I will post the log file when the job has finished

I found the resultant picture is still erroneous.
The resultant video is 640x480 (min. 640 specified)
but the picture have is stretched vertically with
top and bottom portions cropped.

The problem seems to be the last "autocrop" command.

The picture size is 352x480 and "new_aspect" was
calculated as 1.462963. After that "autocrop",

autocrop(mode=0,wmultof=4,hmultof=4,samples=10,
aspect=new_aspect,threshold=35)

The picture size becomes 348x236, i.e. it is cropped
vastly in the vertical dimension.

However, if I change the line to:

autocrop(mode=0,wmultof=4,hmultof=4,samples=10,
aspect=0,threshold=35)

The picture size becomes 348x468, which retains the
full picture for the final resize.

I dunno know if it is a problem of the IFO, etc. I
will post it and the autogk log file when the job
completes.

[len0x]

I need a sample vob to work with this as I don't have any half D1 DVDs... Generally I would say that is not supported in AutoGK atm...

[henryho_hk]

I see. Thanks.

I thought the support of forced 4:3 AR is designed for
Half-D1 DVDs. ;) :D

[len0x]

can you provide a sample vob file for me so that I can try working with it, please?

[henryho_hk]

I have made a 3MB sample.... How can I send it to you?

[len0x]

ok, problem solved. If AR is less than 1.0 then I assume that its half D1 dvd and adjust AR according to that. The question is though: 352 width means that if double you get 704 not 720 like on proper DVDs - does this mean that I have to compensate AR to get 720 in the end or just keep 704 ?

[henryho_hk]

Simple resize from 352x480 to 640x480 will do.

Actually, when we convert 720x480 to 640x480, we should
crop it to 704x480 before resizing to 640x480. It happens
that these areas are usually black bars on the sides and
they are handled by "autocrop" (There may be some
mis-mismatch but it's too small to notice.)

I got all of the information from
http://www.uwasa.fi/~f76998/video/conversion/