DV is 703×576 instead of 720×576 :s

[Rafael Amador]

Hi Matt,
QT display the pixels as Square, therefor the distortion.
In QT, in the Clip Properties (Com-J), set 1024 x 576. This should make your movie to display in 16×9.
rafael

http://www.nagavideo.com

[Matt Radbourne]

Thanks for the reply.
I don’t mind about the displayed aspect ratio, I just need 720 rendered pixels on the horizontal instead of this strange 703px.

The capture is 703px (I don’t know why, does anybody else?) but my comp is set to 720px so I don’t understand why the output is still 703px rather than 720px.

Here are the details of the output file if this helps:
https://pastie.org/pastes/994688

Thanks in advance 🙂

Matt Radbourne
Media Designer
CEM, UK

[Rafael Amador]

Hi Matt,
Please, import the clip back to FC and read the size in the Browser.
rafael

http://www.nagavideo.com

[Richard Brooks]

Hi Rafael,

I shoot on a 550d.

Before editing should the footage by compressed to pro res as its in H.264?

I have just put a showreel together for an editor who is putting together a showreel to showcase the companies in my building and I can’t seem to export the final film in the format he wants despite exporting it in the format he requested, DV Pal 720×576 25fps

I have gone through the clips on the timeline sequence and everything is in different formats. Should I compress then export or should exporting in the above format work? Because it doesn’t seem to be what he’s after?!

Please help.

[Paul Dickin]

[Rafael Amador] “read the size in the Browser”
Hi
This is why Rafa is asking for this info (FCP will give an accurate readout of your movie):

From a BBC document on PAL frame dimensions.

What size is a television picture?
There are 576 active lines in a television picture, making it 576 pixels high. A 4:3
image would therefore be:
(576 x 4) ÷ 3 = 768 pixels wide.
However this assumes the pixels are square – but television pixels are not square.
They have an aspect ratio of approximately 1:1.094.
A 4:3 television picture would
therefore be:
768 ÷ 1.094 = 702 non-square pixels wide
So a 4:3 television image is 702 pixels wide by 576 high.

But anyone who has imported graphics from a computer system to the television
systems knows the correct width to make the image is 720 pixels!
Why – and where did the extra 18 pixels come from?

Digital pictures are effectively wider than analogue pictures by 18 pixels but the 4:3
image sits inside the 720 by 576 area. The additional 18 pixels are required for digital
processing and it would be perfectly acceptable to leave them black – but if the image
is shrunk via a digital DVE, two 9 pixel wide black stripes will be seen at the sides.

https://community.avid.com/cfs-filesystemfile.ashx/__key/CommunityServer.Components.PostAttachments/00.00.54.02.29/BBC-_2D00_-Commissioning-_2D00_-A-Guide-to-Picture-Size.pdf