SDTV widescreen pixels

[Geoffc]

I want to render to 16:9 SDTV for widescreen dvd playback (NTSC).

 

My head is spinning trying to figure out what the actual pixels would be, I can't seem to narrow down one answer thru google.

 

If it is 1.78:1, and I keep the 480 horizontal lines, wouldn't that be ~855 pixels wide? Or am I missing the 'standard' figure to do this?

[NickG]

Hi -

 

we are rendering 864x486. Then you need to scale to 720x486 and instruct you DVD burning software to interpret as widescreen.

 

DVD specs only allow 720x486 (or 480) - during playback it is scaled correctly.

 

Hope this helps,

 

NG

[Geoffc]

That does help. A few more questions:

 

When in the process do you scale to 720x486?

 

When you say scale, do you mean compressing the width to fit, or chopping the width to fit?

 

And why dont you just render at 720x486 to start?

 

thx!

[Tim Nelson]

We render at 720 x 480 with a p.a.r. of 1.2.

 

That way you don't have to change anything once you get in Premiere.

[Chad Warner]

We render at 720 x 480 with a p.a.r. of 1.2.

 

Same here.

[Geoffc]

We render at 720 x 480 with a p.a.r. of 1.2.

 

That way you don't have to change anything once you get in Premiere.

 

 

 

Doh!

 

Already started it this morning. Oh well, now I know for the rest of the animations.

Will Premiere allow me to simply chop the sides down to 720? Or does it have to resample like photoshop can?

[Chad Warner]

You don't want to chop, you want to rescale. WHen you import the footage into premiere, and right click, there's an option to "interpret footage" to a chosen size. This will rescale to whatever aspect you want.

[colinsmith]

Be aware that you need to have the same pixel aspect ratio in the render set up as in premiere - to do as suggested above, 720x480 par 1.2, you need to render to the same settings.

 

The par of 1.2 is saying the pixels in the render are not square, but are 1.2 times wider than a square pixel would be. The 3d camera needs to allow for that. If you set the camera to 720x480 square pixel that is not the right aspect ratio, and changing the par in Premiere will stretch the picture horizontally, out of shape.

 

Set everything to a NTSC widescreen dafault of 720x480, par 1.2 and things will go smooth.