My animations always export to 720x480 regardless of changes

[haknslash]

I'm not sure if I'm just missing something or what but everything in my settings is set to be 1280x720 resolution. However once the animation has finished rendering I end up with a skewed video that is now 720x480. I don't know why it's doing this but can anyone help me figure out why I can't seem to export an animation in the resolution I want?

I have added screenshots of the settings and a screen shot showing the final video resolution has changed.

[nagboy]

Looking at your screensot i see you are rendering straight to an AVI file from 3DSmax. The codec could interfere. This is certainly not "best practice" when rendering animations. Render to frames and use a third party application like after effects to compile the animation.

[haknslash]

Looking at your screensot i see you are rendering straight to an AVI file from 3DSmax. The codec could interfere. This is certainly not "best practice" when rendering animations. Render to frames and use a third party application like after effects to compile the animation.

Yea I think the codec is causing the issue because if I render an image it renders to whatever resolution I want. I'll just render the images out and compile them in post but it would be nice to know the cause. Thanks for your reply.