Video clips in portrait mode seem to use height as width and vice versa

[alansharkey]

WHen I import a video clip which I took in portrait mode, it chops the top and bottom of the video off as if it was taking the width parameter as the height and the height as the width.

I have verified this with a few phones and also the latest (May 11th) build.

Alan

[alansharkey]

An example file is here https://www.dropbox.com/s/azdtx5ugaqfxujw/Alan.mp4?dl=1

Alan

[ferdnyc]

Yeah, the issue is that those dimensions are correct for the way nearly all phones implement portrait video.

When a phone-like device shoots video in portrait mode, what it stores is a landscape video (1920 wide × 1080 tall, for example), with a 90° rotation embedded in the metadata.

Libopenshot recognizes and applies the rotation, but it treats the video as having its unrotated dimensions, which causes issues as detailed in OpenShot/libopenshot#322 (along with #2969 + others, in this repo).