Re: [Motion-user] Frames corrupted and mixed up with portion of frames from other cameras

[Joerg W. <mo...@al...>]

Sebastian,

I have never used USB cams before, so I cannot say much about it. Maybe
someone else on this list has got some more experience. Besides that, I
was never dealing much with the capture code, but more with the detection
algos.

Could you please post the few syslog lines from motion startup, where the
video device is openend and the palette is choosen? Maybe someone with a
similar setup can take a closer look.
Thank you.

Brgds Joerg.


-- 


Sebastian Arcus wrote:
On 05/02/12 10:15, Joerg WEBER wrote:
> Hello Sebastian,
>
>
> of course you are right about roundrobin. It is not active unless you
> share a BTTV device.
>
> Bute there is an 'and' in your statement... switchfilter supresses most
> of this kind of trouble. You can activate switchfilter even when there is
> no roundrobin.
>
> I haven't seen motion mixing frames yet. I can only imagine that the
> problem is with the uvc driver. Do you run more that one cam on a single
> USB input?
>
>
>
> Brgds Joerg.
>
>

What I really can't get my head around is the fact that I am able to run
mjpg_streamer and then record with ffmpeg from mjpg_streamer using all 4
cameras, on the same machine, on same usb ports, with the same uvc
driver and kernel. In fact ffmpeg is recording right now at 5fps without
any problems, and I'm looking at the images streamed by mjpg_streamer on
all 4 cameras. Is motion using some uvc code of its own - which could be
different from what mjpg_streamer is using through the uvc kernel module?

Sebastian