24 Mar
2023
24 Mar
'23
8:49 p.m.
Then, I'm wondering if we can have a better integration of signed strides in the code rather than relying on a ad-hoc `videoflip` element. The `wg_transform` has a buffer pool with metadata, and should be able to convey the plane alignment and stride requirements to the GStreamer elements. Whether this can translate a negative stride to a vertically flipped frame or not, I don't know, but I think it's worth exploring. This would improve compatibility with other possible stride values, as I believe we have some known issues already with some YUV formats using a different default stride on Windows and GStreamer.
I'm afraid videoflip is the only way to do this. Negative stride is a convention used by mfplat and dshow; gstreamer doesn't use it.