Hi Sam,
On Monday 23 April 2007 08:12, Sam Revitch wrote:
On 4/18/07, Laurent Pinchart [EMAIL PROTECTED] wrote:
[snip]
uvcvideo already implements full buffer management. The streaming I/O
V4L2 method is fully supported. I might consider using video-buf later,
although there are a few
a Logitech hardware bug. Search the list archive
for a so-called reset patch. It is known to help some people in the past.
Best regards,
Laurent Pinchart
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On Monday 23 April 2007, Sam Revitch wrote:
On 4/18/07, Laurent Pinchart [EMAIL PROTECTED] wrote:
xawtv should support V4L2. I'll have to debug it sometimes to find out if
the issue lies in the application or in the driver.
Laurent,
It looks like xawtv is passing its argument
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Hi Marcel,
This was posted on the motion-users list. Now that it has V4L2 it should
work with UVC-cams.
Thanks for the report. Has anyone tried motion with the uvcvideo driver yet ?
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to know of the private properties just to
change exposure. Unaware applications would hardly be able to work with
a camera offering exposure.
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is
returning?
Looking at what motion is telling me, the GAMMA is set at 220, the gain
is set at 159
Have you tried to webcam with luvcview right after plugging it in ? Do you
experience the same problems, or are they specific to motion ?
Best regards,
Laurent Pinchart
Hi Stephan,
On Tuesday 24 April 2007, Stephan Richter wrote:
On Tuesday 24 April 2007 15:03, Laurent Pinchart wrote:
You might be suffering from a Logitech hardware bug. Search the list
archive for a so-called reset patch. It is known to help some people in
the past.
thanks for your
Hi Josh and Brian,
Thanks for the reports. I'm glad we now have a new application working with
the driver. Little by little I'm sure we can get most applications ported to
V4L2 :-)
Cheers,
Laurent Pinchart
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You're using a way old driver version. Please checkout the latest
driver from SVN as explained on http://linux-uvc.berlios.de.
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is
fine.
Thanks for the report.
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of
lsusb -d 04da:231e -v
with usbutils 0.72 or newer.
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applications can't handle that.
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,
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application. However, it wouldn't be very difficult to use the
closed-source compatible jpeg6b library to decode mjpeg data.
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Hi Andreas,
On Saturday 05 May 2007, Andreas Volz wrote:
Am Sat, 5 May 2007 21:22:22 +0200 schrieb Laurent Pinchart:
could you please set the trace parameter to 65535 with
modprobe uvcvideo trace=65535
or
echo 65535 /sys/modules/uvcvideo/parameters/trace
then plug your
can use video-buf in the Linux UVC driver. However, this
might not be beneficial to all users. The buffer queue code in the UVC driver
is USB-specific, and is thus smaller than video-buf. Users who currently
don't use video-buf would see their memory usage grow.
Laurent Pinchart
On Sunday 06 May 2007, Markus Rechberger wrote:
On 5/6/07, Laurent Pinchart [EMAIL PROTECTED] wrote:
Let's move this discussion to the linux-uvc-devel list. I CCed
video4linux-list for reference, please reply to linux-uvc-devel only to
avoid
flooding the video4linux list.
On Saturday
On Sunday 06 May 2007, Markus Rechberger wrote:
On 5/6/07, Markus Rechberger [EMAIL PROTECTED] wrote:
On 5/6/07, Laurent Pinchart [EMAIL PROTECTED] wrote:
[snip]
3.) Some controls are missing, for example mplayer isn't supported by
just running
mplayer -tv driver=v4l2 tv
On Sunday 06 May 2007, Markus Rechberger wrote:
On 5/6/07, Markus Rechberger [EMAIL PROTECTED] wrote:
On 5/6/07, Markus Rechberger [EMAIL PROTECTED] wrote:
On 5/6/07, Laurent Pinchart [EMAIL PROTECTED] wrote:
[snip]
Seems like I got something wrong, I do not allocate that much memory
On Sunday 06 May 2007, Markus Rechberger wrote:
On 5/6/07, Laurent Pinchart [EMAIL PROTECTED] wrote:
On Sunday 06 May 2007, Markus Rechberger wrote:
On 5/6/07, Laurent Pinchart [EMAIL PROTECTED] wrote:
Let's move this discussion to the linux-uvc-devel list. I CCed
video4linux-list
On Sunday 06 May 2007, Markus Rechberger wrote:
[snip]
On 5/6/07, Laurent Pinchart [EMAIL PROTECTED] wrote:
On Sunday 06 May 2007, Markus Rechberger wrote:
On 5/6/07, Laurent Pinchart [EMAIL PROTECTED] wrote:
On Sunday 06 May 2007, Markus Rechberger wrote:
On 5/6/07, Laurent
Hi Andreas,
On Sunday 06 May 2007, Andreas Volz wrote:
Am Sun, 6 May 2007 12:18:12 +0200 schrieb Laurent Pinchart:
On Saturday 05 May 2007, Andreas Volz wrote:
Am Sat, 5 May 2007 21:22:22 +0200 schrieb Laurent Pinchart:
could you please set the trace parameter to 65535
supports
v4l2 only. v4l1 is officially deprecated. You will need a v4l2 application
such as Ekiga to use the uvcvideo driver. You can use luvcview (available at
http://mxhaard.free.fr/spca50x/Investigation/uvc/luvcview-20070107.tar.gz) to
test your webcam.
Best regards,
Laurent Pinchart
.
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On Monday 07 May 2007, Andreas Volz wrote:
Am Sun, 6 May 2007 22:10:25 +0200 schrieb Laurent Pinchart:
Are you using a USB 1.1 device behind a hub ? Error 38 is ENOSYS, and
On the hub is a big USB 2.0 sign.
Problems arise (if I'm not mistaken) when you use a USB 1.1 device with a USB
2.0
On Monday 07 May 2007, Laurent Pinchart wrote:
On Monday 07 May 2007, Andreas Volz wrote:
Am Sun, 6 May 2007 22:10:25 +0200 schrieb Laurent Pinchart:
[snip]
There is no point in testing dv mode, only webcam mode will work for
now. We will try dv mode after being done with webcam mode
On Monday 07 May 2007, Andreas Volz wrote:
Am Mon, 7 May 2007 15:32:58 +0200 schrieb Laurent Pinchart:
On Monday 07 May 2007, Laurent Pinchart wrote:
On Monday 07 May 2007, Andreas Volz wrote:
Am Sun, 6 May 2007 22:10:25 +0200 schrieb Laurent Pinchart:
[snip]
There is no point
-archive.com/linux-uvc-devel%40lists.berlios.de/msg00386.html
or newer. There should be no call to delay(), which is what caused the soft
lockup.
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by default. Please
try
luvcview -f yuv
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Hi Andreas,
On Tuesday 08 May 2007, Andreas Volz wrote:
Am Tue, 8 May 2007 11:25:11 +0200 schrieb Laurent Pinchart:
On Monday 07 May 2007, Andreas Volz wrote:
Am Mon, 7 May 2007 15:32:58 +0200 schrieb Laurent Pinchart:
On Monday 07 May 2007, Laurent Pinchart wrote:
On Monday 07 May
Volz for letting me crash his kernel a few
times, and all uvcvideo users for helping me to make the Linux UVC driver
what it is today.
Cheers,
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Hi again,
I forgot to ask you to post the lsusb -v output (using usbutils 0.72 or
newer). I try to keep USB descriptors for all supported devices.
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do you want to do that ?
When I change this value to 10 for example, image capture with 1 cam
works fine. However, as soon as i add and capture from a second camera,
images on both cams appear wrong (bad colours, image cut)..
Does it work with 40 packets ?
Cheers,
Laurent Pinchart
Hi Julien,
On Thu, 2007-05-10 at 10:56 +0200, Laurent Pinchart wrote:
Hi Julien,
I am working on video capture with several cameras.
I have Logitech QuickCam UltraVision webcams.
Is it possible to reduce the number of packets per isochronous URB in
uvcvideo driver
provide no product name, so I have no way to guess it.
If not, then how can one make this happen?
I'm sorry this is not possible with Logitech devices, as they don't have
string descriptors with the product name.
Laurent Pinchart
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Hi Julien,
On Monday 14 May 2007, julien quelen wrote:
On Sun, 2007-05-13 at 23:14 +0200, Laurent Pinchart wrote:
On Friday 11 May 2007, julien quelen wrote:
Hi all,
I am trying to build a synchronized multiple cameras capture.
I started with 2 Logitech QuickCam UltraVision USB
bDeviceProtocol 1 Interface Association
bMaxPacketSize064
bNumConfigurations 1
i can send other result of command.
Thank for your work...
You're welcome.
Laurent Pinchart
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level to
127 and post the kernel log after trying to start the webcam ? I assume you
still use kdetv, which works for me.
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you try
luvcview ?
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of course. So there is no really a point to
implement VIDOCGMBUF as I think I understand now.
If your V4L1 software uses read() to retrieve video data, implementing read
support would indeed be more useful than implementing VIDIOCGMBUF.
Best regards,
Laurent Pinchart
,
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.
Lots of people have stated their interest for a userspace V4L2 library which
would handle simple video format conversions. Unfortunately, nobody has
implemented it yet. Wanna have a go ? :-)
Laurent Pinchart
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(Unable to set format: %d.\n, errno);
goto fatal;
Any suggestions???
Please try the attached patch. Don't forget to post lsusb output with usbutils
0.72 or newer.
Best regards,
Laurent Pinchart
Index: uvc_driver.c
repository to fix the issue
you experienced. You will still need to pass the -fps command line argument.
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apply it
on mplayer-1.0rc1 (that does compile) and then test. Again, thanks for
writing the patch
Here's the patch.
http://svn.mplayerhq.hu/mplayer/trunk/stream/tvi_v4l2.c?r1=20662r2=21603view=patch
Laurent Pinchart
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at
svn://svn.berlios.de/linux-uvc/patches/xawtv
The second issue (BadWindow) is a X-server related problem, and again out of
scope of the Linux UVC driver.
To summarise the situation, the patch you tried probably helped, but you
picked the wrong applications. Please try luvcview or Ekiga.
Laurent
On Wednesday 13 June 2007, Houman R. wrote:
Hi Laurent and thank you for the reply;
Laurent Pinchart wrote:
Hi Houman,
On Friday 08 June 2007, Houman R. wrote:
Laurent Pinchart wrote:
I have recently acquired a refurbished logitech 5000 webcam and I
tried using it with the uvc
.c?r1=20662r2=21603view=patch
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(small) modifications. You can expect a
mail tomorrow or the day after.
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avaible svn/hg revisions, I found such errors both with 2.6.22 and
2.6.21 kernels.
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usbutils 0.72 or
newer).
Thanks.
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information about the device
you are targetting ?
Best regards,
Laurent Pinchart
Index: uvc_driver.c
===
--- uvc_driver.c (revision 111)
+++ uvc_driver.c (working copy)
@@ -54,13 +54,47 @@
static struct uvc_format_desc uvc_fmts
back with MPlayer, edited with cinelerra
etc.
It works with linux-uvc (svn) and Panasonic NV-GS37 in dv mode.
http://freqmod.dyndns.org/upload/dvcapture.c
Thanks for your work. I'll be sure to try it if someone sends me a Panasonic
camera :-)
Laurent Pinchart
Hi Giopas,
giopas wrote:
Laurent Pinchart wrote:
What do you suggest to do?
Contact the em28xx maintainer ? ;-)
Thanks Laurent, I just did it!
enjoy, ;)
giopas
Hi Laurent, I did not received any suggest/answer by dvb module's
mantainer, I've found instead this email:
http
regards,
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forgotten about the wiki :-) I added a link in the
documentation section.
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,
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Hi Ben,
On Wednesday 11 July 2007, Ben Lau wrote:
Hi Laurent,
On 7/11/07, Laurent Pinchart [EMAIL PROTECTED] wrote:
The timeout is specified in milliseconds. 300ms should have been more
than enough. The V-Gear Talkcam MX6 AF might be a bit slow to answer
though, and upgrading your kernel
,
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for other people to work for you without saying
please is considered as quite crude, to say the least.
Best regards,
Laurent Pinchart
hi i would like to do this, but i am a newbee. i use kubuntu since 10
weeks. i do not know what i have to do.
can somebody help me in this case
On Tuesday 17 July 2007 17:54, David C Trotz Jr wrote:
I have processed an unsubscribe request already, yet I am getting
these emails still. Please remove me from this list.
Done.
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, and thanks for the work.
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think those drivers are buggy. If I'm not mistaken, video-buf handles
read() calls with buffer sizes smaller than the frame size. What made you
assume that read() calls has to read a complete frame ?
Cheers,
Laurent Pinchart
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But it looks good - really good.
I added the camera to the list of supported devices.
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with other
programs
The camera was missing from the supported devices list on the webpage. I've
just added it, as well as the 5985:0200.
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work. I'll test the 2.2 release when it comes out :-)
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the messages output from luvcview, please?
Please have a look at the kernel log, it might be more instructive.
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.
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is not the case in this machine.
I'm pretty sure I'm not adding 'custom' to '2.6.17-10mdv'. You should try to
investigate with your kernel sources where this comes from. It seems to
definitely be a build issue.
Regards,
Laurent Pinchart
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me know if it helps.
Best regards,
Laurent Pinchart
Index: uvc_driver.c
===
--- uvc_driver.c (revision 120)
+++ uvc_driver.c (working copy)
@@ -1666,6 +1666,15 @@
.bInterfaceClass = USB_CLASS_VENDOR_SPEC,
.bInterfaceSubClass
Hi Mickaël,
On Thursday 09 August 2007, Mickael Drean wrote:
Hello Laurent,
2007/8/9, Laurent Pinchart [EMAIL PROTECTED]:
Hi Mickaël,
On Wednesday 08 August 2007, Mickael Drean wrote:
Hi there,
I'm new into linux and I'm introducing into it using the FC7,
Trying
-flashable. As for replacing them... I can't speak for
Logitech of course, but I'm pretty much sure to know what they would say :-)
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.
Please keep up the good work.
Thanks. I'll do my best :-)
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for RGB
CVideoDevice::StartCapture() go!
CVideoDevice::LoadImage() Error loading image; errorcode=-19
Camstream doesn't support V4L2 so it won't work.
And with luvcview, I get a black screen
Do you get messages in dmesg when you use luvcview ?
Best regards,
Laurent Pinchart
.
If I could help you somehow, e.g. by sending any kind of logs or debug info,
please don't hesitate to mail me.
Please send me the lsusb -v (with usbutils 0.72 or newer) output. I try to
collect them.
Keep the good work on,
I'll try :-)
Best regards,
Laurent Pinchart
the people who visited the webpage, you're the first
to report that spelling mistake. I'm now wondering if people actually read
the page :-)
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Hi Robert,
please upgrade to usbutils 0.72 or newer. lsusb 0.71 doesn't print UVC
descriptors.
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V4L2, so it won't work with the Linux UVC driver. Sorry.
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at runtime. I
have to bring the branch up to date, as I haven't worked on it for some time.
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?
Unfortunately, yes. The iSight doesn't stream video in the well-supported YUYV
and MJPEG formats, but in the UYVY format. You will have to modify uvccapture
(and possibly other applications) to support that format.
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be loaded. There's nothing to
worry about there.
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work and you have no idea of why
this is not working :'( :'(
Ekiga should work with the UVC driver. You could try it to see if your webcam
works.
In that case, thank you for your help even if it is not working at that
day
Let's not give up (yet) :-)
Best regards,
Laurent Pinchart
,
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running another software first, plugging the
webcam into another port or throttling your CPU might make thinks better or
worse. That's completely random.
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if he has already reported this or not.
Please check if the webcam works without this patch. I got a report a week ago
saying that the unpatched SVN version of the Linux UVC driver works with that
camera.
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to be fixed, but I still haven't been able to test yet.
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luvcview, as it was designed with UVC in mind (although it works
with other webcams as well). I'm sure uvccapture is equally good.
But all of them fail an give a lot of error messages. :-(
That's because the patch isn't done/stable yet. It still needs development.
Best regards,
Laurent Pinchart
-extensions list. The list being empty might
indicate a problem during descriptor parsing. Could you send me the output of
lsusb -v for your device ? Make sure to use usbutils 0.72 or newer, otherwise
lsusb won't print anything useful.
Best regards,
Laurent Pinchart
On Sunday 19 August 2007, Mickael Drean wrote:
2007/8/19, Laurent Pinchart [EMAIL PROTECTED]:
Hi Mickaël,
On Sunday 19 August 2007, Mickael Drean wrote:
Well,
I can do nothing with luvcview... it is a complete black screen :-(
How can I raise the brightness ?
luvcview should
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level to get more information in
the kernel log.
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, except that there's no way to know in advance if it will work
with a given computer.
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you need to solve the problem?
The kernel log after resume. Did you suspend to ram or to disk ? Can you try
both ?
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On Sunday 26 August 2007, Felix Möller wrote:
Laurent Pinchart schrieb:
Hello everybody.
I received no answers to my recent call for testers for the
suspend/resume patch. This either means nobody tried it, or it worked
flawlessly for everybody.
The patch is now in SVN. If you
device unnamed (041e:4058)
uvcvideo: Non-zero status (-84) in status completion handler.
usb 3-1.4: USB disconnect, address 6
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-by: Brandon Philips [EMAIL PROTECTED]
Acked-by: Laurent Pinchart [EMAIL PROTECTED]
---
lsusb.c |8
1 file changed, 4 insertions(+), 4 deletions(-)
Index: usbutils-0.72/lsusb.c
===
--- usbutils-0.72.orig/lsusb.c
is implemented in software in the Windows driver,
and that's out of scope for the Linux driver. Experimenting with a software
AF algorithm in userspace would be a nice project if one of you has some
image processing background :-)
Best regards,
Laurent Pinchart
control is available.
Thanx for your work and your help
You're welcome.
Best regards,
Laurent Pinchart
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...
How do you mean ? The latest Linux UVC driver supports controlling the focus
manually.
2) This explains why the camera makes almost no noise during focus change
and why it returns to infinite focus after losing power.
Best regards,
Laurent Pinchart
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