Dragon Ball aspect ratio error

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overdrive
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Dragon Ball aspect ratio error

Post by overdrive » Wed Dec 31, 2014 12:28 pm

Hi all, I'm viewing the dvds of dragon ball box, I notice that proportion of image is strange (I don't say that be wrong because I haven't a sample of japan's TV for comparing).

In mpc-hc, the DVD is displayed like:

Image

The balls aren't round. I know that can exists a error of aspect, are cartoons, but they are too deformed. Comparing it with Dragon Ball Box movies, the proportion of image is diferent:

Image

In this case, the balls has a better proportion. I will give several examples of resolutions, ever from 720x480 without crop.

If I use --sar 10:11 (ITU-PAR for source digitalized from analogic) parameter of x264, I understand that is properly aspect:

Image

IMHO, with --sar 12:13 the result is similar or equal than dragon box movies:

Image

This is other option, although is possible than image is too much flanged (--sar 15:16):

Image

If someone has VHS-capture of Japan's TV, could say if proportion showed on DVD´s is correct or on some examples than I put. I think than with --sar 12:13 proportion is better or properly.

Thanks in advance.

kei17
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Re: Dragon Ball aspect ratio error

Post by kei17 » Wed Dec 31, 2014 1:14 pm

Crop 16 pixels on the left and right sides of the footage (704x420) before resizing it to 4:3 DAR or just use 15:11 DAR (or 20:11 DAR for widescreen) then you'll get the correct 10:11 pixel aspect ratio image on PCs. Most media players on PC simply resize 720x480 DVD footage to 4:3 or 16:9, but it's actually wrong in most cases. It's not an error of the R2 DVDs.


Image

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overdrive
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Re: Dragon Ball aspect ratio error

Post by overdrive » Wed Dec 31, 2014 2:23 pm

kei17 wrote:Crop 16 pixels on the left and right sides of the footage (704x480) before resizing it to 4:3 DAR or just use 15:11 DAR (or 20:11 DAR for widescreen) then you'll get the correct 10:11 pixel aspect ratio image on PCs. Most media players on PC simply resize 720x480 DVD footage to 4:3 or 16:9, but it's actually wrong in most cases. It's not an error of the R2 DVDs.
Ok, then if I want crop active image I should use 10:11 PAR but without crop image. This aspect is correct, really?:

Image

In the case that i need crop only black bord (6,0,0,0) like on first DVD of Dragon Box, I should adjust PAR in the case that would do little upsize to 720 width, shouldn't? I think that I use spline36resize(720,528,6,0,0,-2) proportion image would be similar to original, dont think?? I do bottom crop for adjusting proportion and fix error of aspect. I think that image is little zoomed (upsize), but I prefer it for avoiding crop 16 pixels. And also helps for removing bottom burned edges of frames, that the source is very affected by that.

Image

Thank you so much, kei. Happy new year!!

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