Exporting Anomorphic SD 16:9 becomes 4:3

Hi,
as there seems to be no answer as to why when you create a 16:9 PAL SD project, screens still show as 4:3 and when you export selecting anomorphic, the finished file still comes out 4:3.
I thought I'd use a suggestion to create 720P project which is a work around but unfortunately when you try and export a SD 720x576 16:9 file it still renders out a 4:3 file, WHY??

Thanks
Nick

are you viewing/interpreting it with the correct pixel aspect ratio (1.46)?

Thanks for your reply,

I'm not sure, as i can't see anywhere in resolve to check, but when I load exported clip into media encoder it only has a pixel ratio of 1.094, which as you stated is incorrect but other than selecting 16:9 in the export settings i can't find any other adjustments

I hope I have understood your question right.

Try this.

- Set your Project to PAL
- Import your clips into the media pool
- Select all the clips
- Right click and select "Clip Attributes" from the popup menu.
- Change the pixel aspect ratio to PAL 16:9
- Drop the clips onto the timeline and see, if this solves your problem.
- Export as PAL (resolution).

I hope this solves your problem.

I partially answered this in the other thread but anamorphic SD 16:9 doesn't become 4:3 because it was always 4:3. Some software, Quicktime for example, can read the anamorphic tag and will play out the video in a 1049X576 window even though the source file is only 720X576.

Thanks Dilson,
I'll give it a go, but still doesn't help my export issue, and unfortunately Howard, when I have exported clips as anomorphic 16:9 in other systems they have played in most players and media encoder has shown correct aspect ratio. I guess the search continues.

Thanks for your replies,
Nick

I've just tried in R14b1 and it did export 720x576 as anamorphic, but it sets 1.85:1 aspect, which is wrong.
You have to start with anamorphic PAL project, then during export make sure you have 16x9 anamorphic set in Advanced tab.
Ignore 4x3 preview in media preview window as this seams to ignore aspect correction. Grading/export preview should show correct aspect when you definitely have 16x9 set in clip properties.

Issue still remains as Resolve 14 (at least b1) sets wrong aspect anyway
Aspect ratio in MOV in this case is just a header metadata (frame is always 720x576) and can be changed instantly or by re-wrpaing using e.g.. ffmpeg. If you on Mac I have a tool which allows to change aspect header instantly.
You can also fix it by re-wrpaing with ffmepg -i "source" -aspect 16:9 -c:v copy -c:a copy "out.mov"
Note that some software will ignore flagging and still display frame at 1:1 pixel aspect, so 5x4 (720/576) frame aspect, but majority players should properly show preview at 16x9 aspect.