I would like to have your feedback.
Probably I missed a point.
The option "simulate device aspect ratio" in the preview pane is for me something that could be very improved or better explained.
For instance working in PAL Widescreen: the display is set to 1049x576 instead of 1024x576, for PAL 4/3, it is set to 787x576 insteas of 768x576.
So I decide to check some value in the project setting, and I saw that the pixel ratio for PAL DV is 1.0926 (59/54), which is in fact the PAR for an ITU analog acquisition as far as I know.
The PAR for 4/3 PAL DV should normally be 16/15 (1.066667).
In the same idea, the PAR for DV Widescreen is set to 1.4568 (= 59/54 * 4/3), but normally it should be 1.422222 (=16/15 * 4/3).
Doing this, Vegas is doing a mess. If it is logical, they should use the ITU anamorpheous PAR 1.45679 * 703 and get 1024. As our DV source file are in 720*576 they multiplied it to 720, which is the width for TV PAR or DV. They get then 1049. So Sonic/Sony really do an error. 1024 is definitively the 16/9 width on a square pixel screen.
The root cause of all this problem is because they do not fixed the correct PAR for DV.
A second point is that this "simulate device aspect ratio" is not changing whatever the resolution of the screen is. You can work in 1280*1024 or 1280*960, the display simulation size stays the same, which is of course not correct.
For french speaking, I've put a post on
http://www.dvforever.com/article.php3?id_article=85
explaining in detail the PAR and SAR with a summuray table of all resolutions. BTW this table should be understandable for non-french speaking people.
Also, I think Vegas should integrate a setting in which we put the exact physical size of the screen (for instance 40cm*30cm), and then in function of the resolution (e.g. 2048*1536) can do the correct calculation to correctly display the preview in good aspect ratio, because we can always set our screen in a resolution with no square pixels, 1280*1024 is a good example.
What do you think?
Probably I missed a point.
The option "simulate device aspect ratio" in the preview pane is for me something that could be very improved or better explained.
For instance working in PAL Widescreen: the display is set to 1049x576 instead of 1024x576, for PAL 4/3, it is set to 787x576 insteas of 768x576.
So I decide to check some value in the project setting, and I saw that the pixel ratio for PAL DV is 1.0926 (59/54), which is in fact the PAR for an ITU analog acquisition as far as I know.
The PAR for 4/3 PAL DV should normally be 16/15 (1.066667).
In the same idea, the PAR for DV Widescreen is set to 1.4568 (= 59/54 * 4/3), but normally it should be 1.422222 (=16/15 * 4/3).
Doing this, Vegas is doing a mess. If it is logical, they should use the ITU anamorpheous PAR 1.45679 * 703 and get 1024. As our DV source file are in 720*576 they multiplied it to 720, which is the width for TV PAR or DV. They get then 1049. So Sonic/Sony really do an error. 1024 is definitively the 16/9 width on a square pixel screen.
The root cause of all this problem is because they do not fixed the correct PAR for DV.
A second point is that this "simulate device aspect ratio" is not changing whatever the resolution of the screen is. You can work in 1280*1024 or 1280*960, the display simulation size stays the same, which is of course not correct.
For french speaking, I've put a post on
http://www.dvforever.com/article.php3?id_article=85
explaining in detail the PAR and SAR with a summuray table of all resolutions. BTW this table should be understandable for non-french speaking people.
Also, I think Vegas should integrate a setting in which we put the exact physical size of the screen (for instance 40cm*30cm), and then in function of the resolution (e.g. 2048*1536) can do the correct calculation to correctly display the preview in good aspect ratio, because we can always set our screen in a resolution with no square pixels, 1280*1024 is a good example.
What do you think?