I would like to test my usb cameras for you. I tried to install a
snapshot today but I had several issues.
Can anyone point to what I'm doing wrong?

uname -a:
OpenBSD zusb.lan 7.7 GENERIC.MP#85 amd64

I have two cameras:
uvideo0 at uhub7 port 4 configuration 1 interface 0 "Alcorlink Corp.
USB 2.0 Camera" rev 2.01/0.00 addr 7
video0 at uvideo0
uaudio1 at uhub7 port 4 configuration 1 interface 3 "Alcorlink Corp.
USB 2.0 Camera" rev 2.01/0.00 addr 7
uaudio1: class v1, high-speed, sync, channels: 0 play, 1 rec, 4 ctls
audio2 at uaudio1
uvideo1 at uhub0 port 10 configuration 1 interface 0 "Generic HD
camera" rev 1.10/1.00 addr 6
video1 at uvideo1
uaudio2 at uhub0 port 10 configuration 1 interface 3 "Generic HD
camera" rev 1.10/1.00 addr 6
uaudio2: class v1, high-speed, sync, channels: 0 play, 1 rec, 2 ctls
audio3 at uaudio2


tried to run video but got:
video: Xv adaptor 0 can't display yuy2

tried to compile ffmpeg after cvs up to current but got error:
fseeko.c:111:4: error: "Please port gnulib fseeko.c to your platform!
Look at the code in fseeko.c, then report this to bug-gnulib."

tried pkg_add ffmpeg but I can't because of several errors:
Can't install xxx because of libraries
...
-alfred

On Wed, Aug 6, 2025 at 6:32 AM Kirill A. Korinsky <kir...@korins.ky> wrote:
>
> misc@,
>
> the latest snapshots for amd64 and arm64 (I haven't checked other
> architectures) include my recent changes to add support for H.264 streams
> from USB webcams.
>
> I would appreciate it if you could test this against your usual devices to
> confirm that I haven't broken anything. You can check the supported formats
> with:
>
>         ffplay -list_formats all -i /dev/videoX
>
> Also, since the 7.7 release, uvideo.c has included a performance
> optimization to reduce CPU usage, which allows it to support 4K 60 fps raw
> streams.
>
> This change should also be safe, but confirmation on any edge cases would be
> appreciated.
>
> --
> wbr, Kirill
>

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