[FFmpeg-devel] [PATCH v3 2/2] libavformat/vapoursynth: Update to API version 4, load library at runtime

[Ramiro Polla]

On Mon, Jul 29, 2024 at 5:56 AM Stefan Oltmanns via ffmpeg-devel
<ffmpeg-devel at ffmpeg.org> wrote:
> Am 28.07.24 um 15:15 schrieb Ramiro Polla:
> > I think calling win32_dlopen() with a full path will be problematic for
> > systems without KB2533623. win32_dlopen() might need to be fixed in a
> > separate patch.
>
> Yes, win32_dlopen would need to check if a full path is already given
> and if yes skip all the stuff to determine it's own and system32 path,
> but instead just use the given parameter directly. To check if it's a
> full path it should be enough to check if it either starts with "\??\"
> (NT-style path) or if the second character is ":" (win32 style path).
>
> But is this really is needed for an operating system that reached
> support end over 4 years ago and does not have a security patch applied
> released over 13 years ago?
> I don't know what ffmpeg's exact policy is in this case, just asking.

Makes sense. I sent a patchset to clean this, but I haven't been able
to test on a real Windows system.

I'll test the vapoursynth patches later on Linux.

Ramiro