On Sun, Mar 30, 2008 at 05:04:37PM -0400, Filipus Klutiero wrote:
> Le March 30, 2008 04:50:24 pm Aurelien Jarno, vous avez écrit :
> > Filipus Klutiero a écrit :
> > > Le March 30, 2008 12:47:26 pm Aurelien Jarno, vous avez écrit :
> > >> Filipus Klutiero a écrit :
> > >>> Le March 30, 2008 12:05:51 pm Aurelien Jarno, vous avez écrit :
> > >>>> Filipus Klutiero a écrit :
> > >>>>> Le March 29, 2008 04:58:06 pm Aurelien Jarno, vous avez écrit :
> > >>>>>> On Sat, Mar 29, 2008 at 04:41:04PM -0400, Filipus Klutiero wrote:
> > >>>>>>> Le March 29, 2008 04:29:42 pm Aurelien Jarno, vous avez écrit :
> > >>>>>>>> On Sat, Mar 29, 2008 at 03:39:42PM -0400, Filipus Klutiero wrote:
> > >>>>>>>>> Le March 29, 2008 03:32:35 pm Aurelien Jarno, vous avez écrit :
> > >>>>>>>>>> Filipus Klutiero a écrit :
> > >>>>>>>>>>> Le March 29, 2008 03:10:03 pm Aurelien Jarno, vous avez écrit :
> > >>>>>>>>>>>> On Sat, Mar 29, 2008 at 02:23:33PM -0400, Filipus Klutiero 
> wrote:
> > >>>>>>>>>>>>> Package: luvcview
> > >>>>>>>>>>>>> Version: 20070512-3
> > >>>>>>>>>>>>> Severity: normal
> > >>>>>>>>>>>>>
> > >>>>>>>>>>>>> luvcview fails to start, although I know the camera works
> > >>>>>>>>>>>>> from Kopete.
> > >>>>>>>>>>>>>
> > >>>>>>>>>>>>> $ luvcview
> > >>>>>>>>>>>>> luvcview version 0.2.1
> > >>>>>>>>>>>>> Video driver: x11
> > >>>>>>>>>>>>> A window manager is available
> > >>>>>>>>>>>>> video /dev/video0
> > >>>>>>>>>>>>> Unable to set format: 22.
> > >>>>>>>>>>>>
> > >>>>>>>>>>>> You camera does not support the default format. Try to specify
> > >>>>>>>>>>>> another format using -f yuv|jpg
> > >>>>>>>>>>>
> > >>>>>>>>>>> It works with yuv, but not with jpg. Should all cameras support
> > >>>>>>>>>>> jpg or is it just the default that's incorrect?
> > >>>>>>>>>>
> > >>>>>>>>>> Not all the cameras support jpg, and not all of them support
> > >>>>>>>>>> yuv. There is no sane default.
> > >>>>>>>>>
> > >>>>>>>>> OK, but that doesn't answer my question. Should all cameras
> > >>>>>>>>> support jpg even though they don't all do it or is it luvcview
> > >>>>>>>>> which is just not trying hard
> > >>>>>>>>
> > >>>>>>>> I don't know exactly, but I don't think they should all support
> > >>>>>>>> jpg.
> > >>>>>>>
> > >>>>>>> So why do you think this isn't a luvcview bug? In any case, if you
> > >>>>>>> don't know exactly, surely luvcview should at least fail more
> > >>>>>>> cleanly.
> > >>>>>>
> > >>>>>> It does already explain the problem:
> > >>>>>>
> > >>>>>> "Unable to set format: 22."
> > >>>>>
> > >>>>> Indeed, I suppose that someone familiar with the source code would
> > >>>>> understand what this means.
> > >>>>
> > >>>> Error 22 is EINVAL, which just confirms that the camera doesn't
> > >>>> support this format.
> > >>>>
> > >>>>> Anyway, since nobody is sure that the camera is the issue, wouldn't
> > >>>>> it be safer to reopen this report until someone is confident that the
> > >>>>> problem is elsewhere?
> > >>>>
> > >>>> I am sure that the problem is that your camera doesn't support this
> > >>>> format.
> > >>>
> > >>> Then why did you write yesterday that you didn't "think they should all
> > >>> support jpg." ?
> > >>
> > >> Let's start again. Some cameras only support yuv or jpg format, and not
> > >> both. When starting luvcview, if your camera doesn't support jpg format,
> > >>  you get an error message telling you it can't set the format. Just
> > >> switch to yuv and it works.
> > >
> > > Yes. Clearly there's a workaround that allows luvcview to start. However,
> > > what's the problem when doing a default invokation? Is it that my camera
> > > doesn't support jpg even though all cameras are supposed to because it's
> > > buggy/doesn't respect a standard, or is it that luvcview wrongly assumes
> > > that all cameras support jpg? Today you wrote that "the problem is that
> > > your camera doesn't support this format." but yesterday you wrote that "I
> > > don't
> >
> > Wrong I confirmed that the message you get comes from your camera.
> What is wrong? You didn't write that "the problem is that your camera doesn't 
> support this format." today? Or you were wrong to write that?

You were asking me if the problem is elsewhere. I answered you that the
message is clear: your camera doesn't support this format. No need to
look elsewhere.

> > > think they should all support jpg.", which seems contradictory.
> >
> > Not all camera support jpg. Not all camera support yuv. There is no sane
> > default. That's that simple.
> Then why does luvcview use a default?

Because it has to ask for a format to the camera.

-- 
  .''`.  Aurelien Jarno             | GPG: 1024D/F1BCDB73
 : :' :  Debian developer           | Electrical Engineer
 `. `'   [EMAIL PROTECTED]         | [EMAIL PROTECTED]
   `-    people.debian.org/~aurel32 | www.aurel32.net



-- 
To UNSUBSCRIBE, email to [EMAIL PROTECTED]
with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]

Reply via email to