[Bug 785011] Sometime between 1.10.4 and 1.12.0 MKV video decode broke when mapping buffers to get pixel data

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=785011

--- Comment #21 from Sebastian Dröge (slomo) <slomo at coaxion.net> ---
Why are you ignoring my questions? :)

It might be a bug, but that depends on your sink's code. If your sink claims to
support GstVideoMeta, GstVideoAlignment, and similar, than you could've always
gotten such buffers. There is additional information in the buffer than for
getting information about strides/offsets that you need to make use of. Mapping
the buffer is not invalid, but you have to interpret the data correctly.

If your sink does not claim to support GstVideoMeta, etc., then this is a bug
in the decoder. Which one is used here?

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