Re: iBot camera, dvgrab stalls

[Dan D. <dde...@co...>]

dvgrab only works with compressed DV video data. The iBot outputs non-DV
uncompressed video. I have an iBot myself. There is not much you can do with
it right now under Linux. I can provide a sample program to generate jpeg
pictures or display the video in a window. You can use the jpeg output in a
website. Here are some other potential uses:

1. Either I or someone else enhances video1394 to be video4linux compatible,
but that is not high a priority for me. You would be able to use this with
the Open H.323 project (http://www.openh323.org/).

2. A medium priority is to add video in a window to Coriander
(http://sourceforge.net/projects/coriander/). Maybe this weekend?

3. A medium-to-low priority is to add support for uncompressed video to
Kino. Right now, Kino is only for editing DV, but I am looking to use my
iBot to do stop motion animation within Kino. With this scenario you would
be able to create AVIs with full motion video or stop motion animation with
your iBot (or Pyro WebCam or other uncompressed video cam).

FYI, most users around here are using uncompressed video cameras in
robotics, machine vision, and other industrial applications. Most of the
other users who are into entertainment, art, or hobby applications have DV
minicams. So, those factors tend to drive the priorities.

+-DRD-+

From: "Bill Paulson" <wpa...@lu...>
> I'm having trouble getting 1394 running. It seems to be installed
> correctly, as gscanbus runs and shows both the adapter and the camera on
> the bus.  Whenever I try a dvgrab, however, it blocks on a read trying
> to get frames (I used gdb to check dvgrab's status).  All the software
> seems to be the latest.
> Linux 2.4.0 with most recent 1394 updates applied
> dvgrab 0.89
> libraw1394 0.8.2
> libdv-2001-01-07.patched
>
> Hardware is a Kouwell 582V adapter card, which uses a TI TSB41LV03
> physical layer chip, and a VIA Technologies VT6305 Link layer chip. The
> adapter is supposed to be OHCI compliant. The camera is an Orange Micro
> iBot.
>
> I have a vague suspicion that the camera needs something before it
> starts up, but I've got no idea what (and I'm probably barking up the
> wrong tree anyway). Any ideas?
> Bill Paulson
>
>
>
>
>
>
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