Importing DNxHD video, aspect ratio stretched.

[sixpointmusic]

Hi,
I imported this DNxHD video(original size 1080x540, =16:8) to my session but looks like Protools stretched the video to 16:9 automatically.
Is there any way to make Protools keep the original size?

*The original video I got from my client was mp4, H264, 1080x540.
*When I import this original mp4, Protools keeps the original size. but mp4 doesn't play well.
*I converted this mp4 to DNxHD using Quicktime Pro. Setting is Avid DnxHD Codec, 1080p/23.976 36 8bit, size custom 1080x540.
*Converted video says 1080x540 and if I open on Quicktime, it looks 1080x540.
*I tried MPEG Stremclip too, same result.

Is there any setting I'm missing when I convert?
I wanna use DNxHD because it plays much better than mp4 even though the file size is much bigger.

Any idea/advice would be appreciated. Thanks!

My system:
Mac Pro 5,1 (Mid2010) 2x2.66 Ghz - 6core Intel Xeon
Memory:48GB 1333Mhz DDR3
OSX 10.10.5
Prootols 12.5.0

[BScout]

When you do the convert, choose to maintain original proportions and pad/letterbox as necessary (both options) and then use a standard dimension (1280x720). This will insert black bars at the top and bottom to maintain the aspect ratio.

DNxHD/DNxHR do not actually have "custom sizes" in their specs (you can look up their tables)

[MatzeHD]

Yes, i as wondering that DNXHD supoort this weirdly resolution?^^

[AndrewAction]

Originally Posted by MatzeHD

Yes, i as wondering that DNXHD supoort this weirdly resolution?^^

DNxHD cannot support weird resolutions. DNxHR is fairly flexible with custom sizes.
Converting to DXnHR could give you that option. FWIW Resolve Studio definitely does flexible size DNxHR exports. I am not sure that Resolve Free does.

Andrew

[sixpointmusic]

Thanks everyone!
I did letterbox and 1280x720 and worked! Thanks BScout.
I didn't have DNxHR option in my QTpro or Mpeg stream clip but anyway, very happy here.
Thanks again.