[Bug 754353] avidemux/qtdemux: Output raw video in unaligned buffers causing crashing in ORC video conversion code

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=754353

--- Comment #6 from Nicolas Dufresne (stormer) <nicolas at ndufresne.ca> ---
For audio it's a good rationale, for video it is not. We can't define something
that depends on the possible use of hardware specific SIMD and blindly say we
fixed the issue.

Good examples, you have no control over what v4l devices will aligned to. It
might be very high bitrate, and SIMD might never be used with it. Are we going
to copy in the source, all the time ? That's basically what this tentative rule
is suggesting.

We should fix our converters to special case the non aligned portions, we
already do in many cases. This is the same thing inside memcpy.

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