MXF to MXF rendering produces squished image

[David Block]

Not sure to really get what you see as a result. A still frame illustrating the problem would make it out of doubt.

But at first it seems like an aspect ratio issue. What setting are you using as pixel aspect ratio?

Cheers,

David

David Block
Film direction, film edition, compositing, technical trainings
Sony Vegas Pro Certified Editor
Final Cut Pro 6 Level 1 Certified

[David Timar]

Hi David,

Thanks for the reply.
Here is the screenshot of the re-rendered mxf.

image2.jpg

For the sake of a clean test, I started a new project with 1920×1080, 29.97fps, PAR 1.000, progressive settings. I put a generated color bar on a single video track, then rendered a small part of it into MXF, with the following settings:
– HD
– 1920×1080
– 29.97fps
– 16:9
– Progressive
– 35 VBR (HQ)
– Main

The problem still remains. How can something that is a square pixel, in a square pixel project, become distorted while it’s properties still saying it is square pixel?

Thanks
David

[David Block]

Hi David,

looks really like a PAR issue though.
Strange.

maybe a clue might be also to check what is your initial Codec, because MXF is only a wrapper. Maybe there is the issue, a difference in formats between two MXF files. Is it XDcam HD? I’d have to do the test myself though, See what I can get.

Cheers,

David

David Block
Film direction, film edition, compositing, technical trainings
Sony Vegas Pro Certified Editor
Final Cut Pro 6 Level 1 Certified

[David Timar]

Hi David,

I’m not sure how codec would come into effect here.
If I take an empty project, render any kind of generated media into it and then use the render function of Sony Vegas, there is no option to use any kind of codec. It’s a simple MXF export option.

Unless I’m missing something.

Thanks
David

[Douglas Spotted eagle]

If you are using the IMX export, it should be exporting a 1440 x 1080 stream. Is this not what you’re seeing when you re-import that footage into Vegas and looking at the properties?

Douglas Spotted Eagle
VASST

Certified Sony Vegas Trainer
Aerial Camera/Instructor

[David Timar]

Are we talking about the same thing? I’m rendering into MXF. 1920×1080.

[Douglas Spotted eagle]

Using XDCAM HD or XDCAM EX as my source, rendering to any of these 9 templates (regardless of source PAR) provides a correct SAR. Which of these nine are you using?
…could you outline your workflow, project settings, any pan/crop, and render settings that you might be using, including any customizations?
I’m using Vegas 8c.

Douglas Spotted Eagle
VASST

Certified Sony Vegas Trainer
Aerial Camera/Instructor

[David Timar]

Hi David,

I hate situations like this.

I bump into a problem, post a topic, keep trying to find out what could be the problem, get some amazing people helping me, and then without changing anything, all of a sudden the problem disappears.

I just tried doing what I’ve been doing again, and the end result didn’t get squished…. Sometimes I hate computers… They have a mind of their own.

Anyways, it looks like it’s working the way it’s supposed to. 🙂

Thanks for your help David.

Cheers.

[David Block]

you’re welcome, David,

glad it works fine now

Cheers,

David

David Block
Film direction, film edition, compositing, technical trainings
Sony Vegas Pro Certified Editor
Final Cut Pro 6 Level 1 Certified