Hi,
Have you tried any other software besides cheese? (guvcview, luvcview,...)
Regards,
Paulo
2011/11/23 Antonio Roberts anto...@hellocatfood.com:
I recently bought this wireless webcam;
http://www.maplin.co.uk/2.4ghz-wireless-webcam-388087 . I'm having
trouble getting it to work on Ubuntu
Hi,
I have my logitech sphere up and running with a 64 bit 3.0 kernel.
All controls are working including pan/tilt/ and focus.
In ubuntu at least you can't cold plug the camera, or uvcdynctrl won't
get triggered.
The easiest way is just to rmmod and then modprobe uvcvideo, this will
get
Hi,
have you tried it on guvcview ?
You should be able to use that button to capture a image or video
depending on the default action you select.
Regards,
Paulo
2011/10/14 Max Lapshin max.laps...@gmail.com:
Hi. Is it possible to capture button press on microsoft lifecam studio?
There is small
Hi all,
Just dropping a line to inform you that guvcview has moved to sourceforge:
project page: http://sourceforge.net/p/guvcview/home/Home/
home page: guvcview.sourceforge.net
This change was prompted by the closing of berlios on 31-12-2011, the
lack of funding has forced them to shut-down
will test it with my camera too..
Regards,
Ajay Bhargav
- Paulo Assis pj.as...@gmail.com wrote:
Hi,
see attached a patched capture example, for saving the driver output
buffer into raw files (200).
I haven't been able to test build it, but the changes are minimal so
it should work.
You
Hi,
I would like to add support for H.264 stream format in guvcview, Could you
post some stream info, or even better an example of raw data output (does
the capture buffer contains an exact frame like in MJPEG ?)
Regards,
Paulo
2011/9/9 Ajay Bhargav ajay.bhar...@einfochips.com
Hi Srinivas,
this..
-- Ajay Bhargav
- Paulo Assis pj.as...@gmail.com wrote:
Hi,
I would like to add support for H.264 stream format in guvcview, Could you
post some stream info, or even better an example of raw data output (does
the capture buffer contains an exact frame like in MJPEG ?)
Regards,
Paulo
. It
seems to be some SVC variant of h264 and ffmpeg can't play it correctly.
Robert say, currently only fluh264dec (flyendo plugin for gstreamer) can
play it.
Am 09.09.2011 13:23, schrieb Paulo Assis:
Hi,
I was thinking on using ffmpeg (libavcodec) since this is already a
guvcview
dump from Robert, not v4l2... The problem with it is
codec. It
seems to be some SVC variant of h264 and ffmpeg can't play it
correctly.
Robert say, currently only fluh264dec (flyendo plugin for gstreamer)
can
play it.
Am 09.09.2011 13:23, schrieb Paulo Assis:
Hi,
I
Regards,
--
Rob Krakora
MessageNet Systems
101 East Carmel Dr. Suite 105
Carmel, IN 46032
(317)566-1677 Ext 212
(317)663-0808 Fax
On Fri, Sep 9, 2011 at 10:05 AM, Paulo Assis pj.as...@gmail.com wrote:
Well one important thing to notice is the pixel format returned by the
driver
...@messagenetsystems.com:
Thanks Paulo!
On Fri, Sep 9, 2011 at 10:50 AM, Paulo Assis pj.as...@gmail.com wrote:
Hi,
see attached a patched capture example, for saving the driver output
buffer into raw files (200).
I haven't been able to test build it, but the changes are minimal so
it should work.
You just need
Hi,
guvcview detects some sync issues, it seems although you select 30
fps, for that resolution (1280x720) your hardware is just not powerful
enough to decode the MJPG stream and re-encode it with whatever coded
you are using.
Some solutions:
-reduce the fps
-reduce the resolution
-try using a
. But
still the same. Sound and audio is still unsyncron in guvcview. Cheese
records all well but in 15 fps.
Steffen
Am Mittwoch, den 07.09.2011, 09:35 +0100 schrieb Paulo Assis:
Hi,
guvcview detects some sync issues, it seems although you select 30
fps, for that resolution (1280x720) your
07.09.2011, 16:58 +0100 schrieb Paulo Assis:
Hi,
if you are using any of the mpeg4 codecs, you will need a rather
powerful cpu for encoding at high frame rates, specially at any decent
resolution.
As an example I don't have any special problems with the following
configuration:
device input: MJPEG
Hi,
The flag is think is UVC_CONTROL_AUTO_UPDATE
and in the case of extension controls you really need to set it to
disable control caching, this is specially evident for control like
pan/tilt, that behave badly if this flag is not set.
see:
http://www.spinics.net/lists/vfl/msg38717.html
in the
Hi,
guvcview had a little problem when handling menu control indexes, it
was using the combo box index instead of the real control menu index.
This should be fixed in svn (svn://svn.berlios.de/guvcview/trunk) if
you care to test it.
This worked fine for sequential menu indexes, but this specific
(maximum value).
Regards,
Paulo
2011/8/3 Paulo Assis pj.as...@gmail.com:
Hi,
guvcview had a little problem when handling menu control indexes, it
was using the combo box index instead of the real control menu index.
This should be fixed in svn (svn://svn.berlios.de/guvcview/trunk) if
you care
Hi,
your camera mic is supported by the snd-usb-audio alsa driver (
http://alsa.opensrc.org/Usb-audio ), this is a totally different
driver and specification from uvcvideo (video only).
Anyway is the problem related to skype only or do other apps like
audacity, suffer from the same issues?
Hi,
Some documentation on the subject:
http://www.quickcamteam.net/uvc-h264
Regards,
Paulo
2011/6/16 Ajay Bhargav ajay.bhar...@einfochips.com:
Hi Alexey,
Thanks for reply, Well i have already done this before even i saw that
patches in mailing list... I am able to add /dev/video0 device on
Hi,
this looks like a faulty connection.
Try a different usb port, if this doesn't help you should check the
camera cable.
Regards,
Paulo
2011/6/13 Ian Freeman i...@ifreeman.net:
I can get working video from this device for a limited amount of time
before it disconnects from the usb system.
Hi,
2011/6/11 hagar ha...@iinet.net.au:
I have a Z-Star USB Digital Microscope It is supposed to have the following
specifications -
ManID - 0ac8
DevID - 3610
Image - 1.3 MP
Bus - USB 2.0
Mag - 20x - 400x - ( Manual - More like Focus )
Capture - Still Video
Modes -
connection makes no big difference although you should be able achieve
better fps with mjpg at higher resolutions.
YUYV is more limited due the higher usb bandwidth needed.
Regards,
Paulo
Many thanks,
Naruka
On Thu, Jun 9, 2011 at 8:52 PM, Paulo Assis pj.as...@gmail.com wrote:
Hi
Hi,
2011/6/7 Alexey Fisher bug-tr...@fisher-privat.net:
On Mo, 2011-06-06 at 17:31 -0700, Carl Michal wrote:
Hello,
I'm having some trouble with a Quanta integrated webcam. It identifies
itself as: Laptop_Integrated_Webcam_2HDM, usbid: 0408:2fb1. This is built
in to a Dell XPS-15 (L501X).
Hi,
I've had a look and it indeed there is a focus control. Considering that by
default it is set on 0 (and it was set on 0 during operation), does this
mean that it is on auto?
This should be focus absolute, if set on 0 then focal length should
be set near infinite, that is good enough
Hi,
1. Would this be fairly specific to the Logitech QuickCam 9000, or is a more
generic issue with webcam sensors?
Neither, you just need to lower exposure time.
2. Are other webcams better in this respect?
I don't think so, you can control exposure quite easily with this cam.
3. Can I
Hi,
2011/4/26 Davide Marchi dan...@msw.it:
Hi,
i'm trying to enable the acer 5635z[04f2:b044] webcam (on
www.ideasonboard.org/uvc/ the webcam result ok) ;
for this i've follow the http://git.linuxtv.org/media_build.git procedure
and build and installed the modules:
git clone
Hi,
What is the proper way to disable the LEDs on the Quick Cam Pro 9000 and
You must use logitech extension controls for this,
you can use uvcdynctrl from libwebcam (command line) or guvcview
(gtk), you must be root to add these controls to the driver (libwebcam
installs a udev script to
-- Forwarded message --
From: Paulo Assis pj.as...@gmail.com
Date: 2011/3/29
Subject: Re: [Linux-uvc-devel] Creative VF0700 Live! Cam Chat HD works
everywhere, except highly distorted video in Skype
To: Benson Bear benson.b...@gmail.com
2011/3/29 Benson Bear benson.b...@gmail.com
Hi,
bFunctionClass255 Vendor Specific Class
bFunctionSubClass 3
The camera is not uvc compatible, should read something like:
bFunctionClass 14 Video
bFunctionSubClass 3 Video Interface Collection
so I don't think it will work with the uvc
Hi,
2011/3/18 Paul Jurczak pauljurc...@yahoo.com
Hello,
I there any documentation available about XU (extension unit) for webcams
other than Logitech? XML definition files for uvcdynctrl maybe? I'm
specifically looking for disabling on-board image processing in order to get
raw Bayer data.
Hi,
please check this link:
http://forums.quickcamteam.net/showthread.php?tid=1305
with a little fix to the previous patch the camera seems to work fine
with at least two units streaming at the same time.
I can't send an updated patch right now since my adsl connection is on
the slow side at the
Hi,
The problem appears when changing the resolution:
Are you saying it works on a higher resolution but falls on a lower one?
The fix bandwidth quirk only works on uncompressed streams (yuv), if
you pick mjpg or any other format (libv4l will convert from mjpg) then
this quirk is useless.
Make
Hi,
2011/2/19 modysama asmaa.elassal.stud...@pua.edu.eg:
Paulo Assis pj.assis at gmail.com writes:
The problem appears when changing the resolution:
Are you saying it works on a higher resolution but falls on a lower one?
The problem:
Webcam work only on guvcview in only
Hi, I find strange the following output from luvcview:
Frame format: YUYV (MJPG is not supported by device)
Your lsusb output seems to indicate that MJPG is indeed supported.
Could you post the output of guvcview --verbose?
This should list all video formats available in your device (and the
Hi,
This may be caused by auto exposure, in dark environments exposure
increases so fps is reduced despite the requested value.
In some cameras you can disable auto exposure so that you always get
the requested fps, but some lower end models don't have support for
this control .
Regards,
Paulo
Hi,
[11532.813381] usb 2-1.1: new full speed USB device using ehci_hcd
Are you connecting your camera to a usb1.1 port ?
The camera should be detected as a High Speed device.
check the difference here:
http://www.photoxels.com/article-usb-2.0-high-speed-vs-full-speed.html
Regards,
Paulo
Hi,
2011/1/25 Laurent Pinchart laurent.pinch...@ideasonboard.com:
On Monday 17 January 2011 10:23:34 Paulo Assis wrote:
I think if this was bandwidth related the error returned by the driver
would be different, besides the bandwidth required for the c600 is the
same and it works with this one
I think if this was bandwidth related the error returned by the driver
would be different, besides the bandwidth required for the c600 is the
same and it works with this one.
The camera just seems to crash, even controls stop responding.
Regards,
Paulo
2011/1/17 Mitar mmi...@gmail.com:
Hi!
Just get a uvc camera they have the best support under linux:
http://www.ideasonboard.org/uvc/#devices
Regards,
Paulo
2011/1/15 loody milo...@gmail.com:
Dear all:
I intend to buy a webcam for video conference meeting over skype under Ubuntu.
1. Shall I buy any webcam will be fine?
2. or I
Hi,
2011/1/17 loody milo...@gmail.com:
hi all:
I really appreciate all you kind help :0
2011/1/17 Paulo Assis pj.as...@gmail.com:
Just get a uvc camera they have the best support under linux:
http://www.ideasonboard.org/uvc/#devices
Actually why I post this mail because I want to know what
Radek,
Please attach the full dmesg output when starting video capture with
the second camera.
Also increase log verbosity first:
something like this:
rmmod uvcvideo
modprobe uvcvideo trace=65535
You should also refer your capture settings (if I remember MJPG
640x480@24 fps) and that if you use
Hi,
Did you notice the (Software enhanced) remark ?
This means a lower resolution is used to achieve the 30 fps and then
the windows driver resizes the image frame to 800x600 (through
software).
The linux uvc driver (like any other v4l2 driver) just exposes the
real resolutions and frame rates
using smth like morphing?
If someone knows how to do that using userspace software in GNU/Linux
— please, let me know.
Best regards,
Alexander.
On 1/6/11, Paulo Assis pj.as...@gmail.com wrote:
Hi,
Did you notice the (Software enhanced) remark ?
This means a lower resolution is used
really don't care in which resolution my camera should work, but I
want to get 30 fps.
Also, my CPU load is ~25%, the video card works with hardware
acceleration. I've tried different mplayer video drivers (xv, gl2,
etc) and I see the same result.
On 1/6/11, Paulo Assis pj.as...@gmail.com wrote
the same result.
I've attached guvcview --verbose output.
On 1/6/11, Paulo Assis pj.as...@gmail.com wrote:
You may need to disable autoexposure.
Could you please try it with guvcview ?
If you could also post the output of 'guvcview --verbose' it would be
great, as it prints out your camera full
Hi,
2010/11/25 malef...@malefico3d.org:
YESSS !!!
Thank you Paulo, I tried that and I could get image in guvcview :D
I guess I have to add this to /etc/modprobe.d/somewhere_in_slackware but I
guess I shouldn't have too much trouble with that.
Now I wonder if there is a way to use higher
Claudio hi,
2010/11/24 malef...@malefico3d.org:
Hi Laurent,
http://www.pasteall.org/17101 is the output of lsusb -v, line 176 starts
blurb about webcam.
Have you tried the FIX_BANDWIDTH quirk ?
No, where is that ? kernel source ?
just do:
rmmod uvcvideo
modprobe uvcvideo quirks=128
Have you tried any other app besides vlc ? luvcview, guvcview, cheese, ...?
Regards,
Paulo
2010/11/23 malef...@malefico3d.org:
Hi,
I bought a cheap Genius FaceCam 310 usb webcam, which is promoted as being
supported in Linux Kernel 2.21 (so it says in the box !)
I'm testing in under
Hi,
2010/11/19 Laurent Pinchart laurent.pinch...@ideasonboard.com:
Hi Neil,
On Thursday 18 November 2010 16:00:00 Paulo Assis wrote:
Neil Hi,
Could you please post the relevant dmesg output.
Increasing uvcvideo verbosity would also be a good help.
--- snip ---
libv4lconvert: warning
Hi,
2010/11/19 Neil Benn neil.b...@gmail.com:
snip
This as been reported before:
http://www.mail-archive.com/linux-me...@vger.kernel.org/msg19535.html
and it should be fixed in the latest libv4l, but older versions will
still have a 16 frame size limit.
However this is just a warning
Pinchart
laurent.pinch...@ideasonboard.com wrote:
On Friday 19 November 2010 15:53:24 Paulo Assis wrote:
Hi,
2010/11/19 Neil Benn neil.b...@gmail.com:
snip
This as been reported before:
http://www.mail-archive.com/linux-me...@vger.kernel.org/msg19535.html
and it should be fixed
Neil Hi,
Could you please post the relevant dmesg output.
Increasing uvcvideo verbosity would also be a good help.
--- snip ---
libv4lconvert: warning more framesizes then I can handle!
libv4lconvert: warning more framesizes then I can handle!
--- snip ---
No problem with this, libv4l only
to loose frames. But my
application is acting as still camera and in this case having one
buffer should be fine. Is my understanding correct?
Thanks
On Wed, Nov 3, 2010 at 8:49 PM, Paulo Assis pj.as...@gmail.com wrote:
Hi,
have you tried increasing the work load on your system ?
If for some
Hi,
2010/10/19 oldcpu old...@opensuse-forums.org:
OK, ... well, I went ahead and ordered it via mail order. :)
I figure if it does not work well, I have many friends who use MS-Windows
who would love to have it as a gift. :)
If it does work reasonably well, what will I have to do to have
Hi,
2010/10/17 oldcpu old...@opensuse-forums.org:
It appears that Logitech HD Pro Webcam C910 (046d:0821) is functional with
the uvc driver.
Why is it not on your UVC list: http://www.ideasonboard.org/uvc/ ?
Maybe because it's a rather recent model ;-D and no one confirmed it
yet as uvc
Hi,
did you connect the camera to a usb1.1 port?
Devices can/will reduce available resolutions when connected to lower
speed usb ports.
Make sure you plug it directly to a usb2 port.
Regards,
Paulo
2010/10/4 Nick Rout nick.r...@gmail.com:
My first post here so if I am in the wrong place, let me
Hi,
Could you please post the output of lsusb -d 17ef:481c
Regards,
Paulo
2010/9/20 SanitoeterNo1 sanitoeter...@gmx.de:
Hello,
I own a Lenovo SL510 laptop with an integrated webcam.
The camera works well but it doesnt allow me to select resolutions higher than
640x480 regardless of which
Hi,
2010/9/21 SanitoeterNo1 sanitoeter...@gmx.de:
Hi,
since lsusb -d 17ef:481c does not print any more information, I added the -v
option. Here is the output:
Yes, I forgot that, sorry.
If you look down the descriptors, you will notice that the camera
doesn't support more than 640x480:
Hi,
2010/9/21 SanitoeterNo1 sanitoeter...@gmx.de:
Hi,
I know uvc does not offer any resolutions above 640x480, but I bought this
laptop with a 2 megapixel camera, so I suppose this is a driver problem,
otherwise I'll have to talk to the Lenovo support.
The camera itself doesn't advertise any
Hi,
No usd ID is needed for the uvc driver.
UVC cameras identify themselves as such:
http://www.ideasonboard.org/uvc/faq/
ID's found on the driver code are merely used for passing driver
quirks for some cameras with known issues.
So first check if your camera is uvc compliant (see previous
2010/8/26 Laurent Pinchart laurent.pinch...@ideasonboard.com:
Hi Oz,
On Wednesday 25 August 2010 21:15:17 Oz Nahum wrote:
Hi Everyone,
Thanks for the help!
I managed to activate the webcam ! it's working with Kernel 2.6.34.
Is there a way to donate money to the UVC project ?
I'll let
Hi,
2010/8/25 Michelle Konzack linux4miche...@tamay-dogan.net:
Hello Paulo Assis,
Am 2010-08-24 23:31:00, hacktest Du folgendes herunter:
Yes it is:
http://packages.debian.org/unstable/main/guvcview
and you can always build it if you need ;-D
On a small ARM Machine without harddisk
Hi,
could you please post the output of lsusb -v -s 5986:0241
dmesg output after connecting the camera would also be helpful
Regards,
Paulo
2010/8/25 Oz Nahum nahu...@gmail.com:
Hi Everyone,
I have the following webcam:
Bus 001 Device 002: ID 5986:0241 Acer, Inc BisonCam, NB Pro
This problem has already been reported some time back:
http://www.mail-archive.com/linux-uvc-devel@lists.berlios.de/msg04511.html
I'm not sure if this patch made it in to 2.6.32, so you should really
install a newer driver version.
Just disable whatever modules are causing you trouble with make
98386 4 uvcvideo,uhci_hcd,ehci_hcd
nls_base 4541 1 usbcore
I am also trying to build a newer kernel version 2.6.34 - we will see
if that works. Any other ideas ?
Thanks,
Oz
On Wed, Aug 25, 2010 at 4:17 PM, Paulo Assis pj.as...@gmail.com wrote:
This problem has already been
Hi,
OK, if I now start
[ command 'luvcview' ]--
luvcview 0.2.4
SDL information:
Video driver: X11
A window manager is available
Device information:
Device path: /dev/video0
Stream settings:
Frame format: MJPG
Frame size:
Hi,
2010/8/24 Michelle Konzack linux4miche...@tamay-dogan.net:
Hello Paulo Assis,
Am 2010-08-24 11:03:25, hacktest Du folgendes herunter:
Frame rate: 20/1 fps (requested frame rate 30 fps is not supported by
device)
I think luvcview uses the frame rate you requested (or in this case
Hi,
All new logitech models are UVC compliant, this includes all c models:
http://www.quickcamteam.net/devices/logitech_uvc_device_list.pdf
the above list doesn't include the new models yet, but the c310 is
just an update on the c300.
In fact I don't think manufacturers are still releasing new
Hi,
2010/7/7 loody milo...@gmail.com:
Dear all:
I bought a webcam and video part works fine with universal video driver.
my question are:
1. how could I let the mic works too?
The mic should work through the usb audio alsa driver: snd_usb_audio
What modules or configures I should add in
/06/2010 в 23:52 +0100, Paulo Assis пишет:
Andrew Hi,
By default vlc uses libv4l, just like most other software, when this
fails it reverts to direct v4l2 access, (you probably should also
check your libv4l version and update it if needed)
vlc seems to be able to open a MJPG stream after a few
, 24/06/2010 в 10:31 +0100, Paulo Assis пишет:
Andrew Hi,
you can increase the driver verbosity by setting the trace parameter:
rmmod uvcvideo
modprobe uvcvideo trace=65535
trace level is given by grouping several flags so you can set it to
something like 0xff and get a huge amount
, Paulo Assis пишет:
Andrew Hi,
Can you try setting quirks to 2:
rmmod uvcvideo
modprobe uvcvideo quirks=2 trace=65535
please post also a working dmesg log (from vlc)
Regards,
Paulo
2010/6/24 Andrew V Kuzmin freeg...@mail.ru:
Hi Paulo! Requested logs in attach
dmesg - all from
to delete buffers: Invalid argument (errno 22)
cleaned allocations - 100%
Closing portaudio ...O
В Срд, 23/06/2010 в 17:05 +0100, Paulo Assis пишет:
guvcview --format yuyv
___
Linux-uvc-devel mailing list
Linux-uvc-devel@lists.berlios.de
https
Natalia Hi,
Please check guvcview source code: jpgenc.c; dct.c; huffman.c and also
vcodecs.c(compress_frame) for a built in MJPG/JPG encoder.
Regards,
Paulo
2010/6/16 Natalia Portillo clau...@claunia.com:
Hi,
Continue with my creation of a UVC webcam inside the QEMU emulator, I've
found a
Hi,
2010/6/15 Franz TRIERWEILER franz.trierweiler.ingeni...@gmail.com:
Hi,
I am porting a library based on uvc to an ARM core and am creating a RPM
package.
My library build needs uvcvideo.h. I expected this header file to be simply
available from Linux headers /usr/src/linux/include. In
Hi,
2010/5/26 Santiago Segura sans...@hotmail.com:
Hi,
The full system is freeze.
About the hardware problem, maybe you are right, but the curious is that
sometimes the same board is three days working and sometimes only 12 horus.
I think that is to much time for a hardware problem.
Not
Hi,
Do you get any messages on the system log (dmesg) ?
Regards,
Paulo
2010/5/25 Santiago Segura sans...@hotmail.com:
Hi!
I have a strangle problem using two cameras at the same time.
My application (webcam security) works perfectly, I suppose.
But after some hours (24 hours or more)
Gavin Hi,
2010/5/17 Gavin McCullagh gmccull...@gmail.com:
Hi,
I picked up one of these cheap USB microscopes and was wondering if it
might be usable with linux. As it's made by Aveo, I thought the UVC
driver might be convinced to work with it.
You should have bought the Bresser package at
Hi,
2010/5/17 Gavin McCullagh gmccull...@gmail.com:
Hi,
On 17 May 2010 10:36, Paulo Assis pj.as...@gmail.com wrote:
You should have bought the Bresser package at Lidl, that one has a uvc
camera that works very well.
(actually the fps is clipped to 5 due to the high exposure time
Hi,
2010/5/16 bruno.via...@free.fr:
- Adrian Sergiu Darabant aser...@yahoo.co.uk wrote :
My need is to stream from both cameras in the same time.
(...)
I tried to do that and I am succeeding up to query and map buffers but
then when doing VIDIOC_STREAMON - the first camera starts and
2010/5/7 Laurent Pinchart laurent.pinch...@ideasonboard.com:
Laurent,
Hi Paulo,
On Tuesday 04 May 2010 10:36:19 Paulo Assis wrote:
What happens to the camera settings when the computer is rebooted? Are
they stored in some non-volatile memory in the camera? That would be
awesome.
If I'm
Hi,
Are you sure the camera supports MJPG ?
It seems to report only a uncompressed format (YUYV ?).
You can check the supported formats with luvcview, guvcview or
uvcdynctrl (libwebcam)
Best regards,
Paulo
2010/5/5 HKairpost u...@hk.airpost.net:
u...@hk.airpost.net wrote:
Hello,
I have a
Alan Hi,
Yes, the profiles are very useful. Your program in general is very
useful, I hope you make a stable release soon, some distros only ship
release versions of programs (like mine for example).
The latest stable release is 1.3.1 (adds camera button support),
unfortunately some distros
Alan Hi,
Can you test with guvcview (http://guvcview.berlios.de)?
Maximum frame rate also depends on the pixel format and resolution, so
choose a format and resolution that supports a high frame-rate (e.g
m...@800x600)
Regards,
Paulo
2010/4/29 Alan lameventa...@gmail.com:
I have a problem with
Dennis,
Can anyone suggest a way to configure the cameras at a higher framerate
without overloading the USB bus? Suppose I can read at 10 fps right now
without overloading the USB bus. I'd like to set the framerate to 15, but
still just capture around 10.
You can grab frames at whatever
Ian
2010/4/27 Ian Latter ian.lat...@midnightcode.org:
You can grab frames at whatever speed you want, but it's
the camera
framerate that will make a difference in the usb bandwidth
and not the
amount of frames you get with your application.
So, if you don't take a frame from the UVC
David Hi,
Maybe the camera it's not uvc compatible, you can check it with lsusb.
Best Regards,
Paulo
2010/4/15 David Song tingus...@gmail.com:
Hi all,
I have a MSI U130 netbook with a built-in 1.3M pixels webcam.
Unfortunately, however, this webcam is not recognized by uvcvideo
driver. Can
Franz Hi,
2010/4/6 Franz TRIERWEILER franz.trierweiler.ingeni...@gmail.com:
Hello,
I am trying to make jpeg/png still encoded picture from a uvcvideo
compatible webcam with gstreamer. I do this on a Freescale iMX25 evalboard
featuring support for the uvcvideo driver.
I configured the
Hi,
2010/4/6 Franz TRIERWEILER franz.trierweiler.ingeni...@gmail.com:
Hi Paulo,
First many thanks for your answer.
I have doubts about using Usb1 ou Usb2 port... I asked Freescal in order to
make sure but according to the IMX datasheet, it is a USB 2.0 port.
What annoys me is that I read:
Have you read the linuxtv v4l2 wiki ?
http://www.linuxtv.org/wiki/index.php/Main_Page
http://www.linuxtv.org/wiki/index.php/Anatomy_of_a_V4L_driver
http://www.linuxtv.org/wiki/index.php/Development:_How_to_add_support_for_a_device
Jeff Hi,
2010/4/2 Jeff Van Epps lord...@lordbah.com:
By changing some uvc_trace(UVC_TRACE_VIDEO to
uvc_trace(UVC_TRACE_IOCTL I was able to get out this message:
uvcvideo: No fast enough alt setting for requested bandwidth.
Humm, there is also a bandwidth quirk, this was added for
Hi,
Try guvcview with the option --control_only, this should work along
side any other v4l2 app and you will be able to change the camera
control settings.
Best regards.
Paulo
2010/3/31 Nikhil Benesch primate...@gmail.com:
I have a Chicony 2.0 USB Camera (04f2:b008) that almost works perfectly.
Svend Hi,,
please follow the instructions here:
http://www.linuxtv.org/wiki/index.php/How_to_Obtain,_Build_and_Install_V4L-DVB_Device_Drivers
and make sure you install the kernel headers or you wont be able to
compile the drivers.
Best regards,
Paulo
2010/4/1 svenda...@yours.com:
Hello with
Oh, please also make sure you are not connecting the camera through a
usb hub, unfortunately usb hubs don't work very well in linux and will
cause the video stream to fail.
Reagards,
Paulo
2010/3/30 Jeff Van Epps lord...@lordbah.com:
$ luvcview -f mjpg -s 320x240 -i 15
luvcview 0.2.4
SDL
Roger Hi,
usb 1-1: new full speed USB device using s3c2410-ohci and address 5
I think this explains why you only have MJPG on the ARM board.
YUYV requires a higher bandwidth, so it's only available in usb2.
But MJPG should also be available with usb2 and from what I understand
you only have
Hi,
[r...@hmws:~] lsusb -d 174f:6a31 -v | grep bInterfaceClass
bInterfaceClass 255 Vendor Specific Class
Your device is not uvc compliant as such it cannot be supported by the
uvc driver.
Try following these instructions:
http://ubuntuforums.org/showthread.php?t=1081667
Best
Jeff Hi,
You should have followed the v4l-dvb wiki:
http://www.linuxtv.org/wiki/index.php/How_to_Obtain,_Build_and_Install_V4L-DVB_Device_Drivers
you now have mixed modules (new and old) and this is causing the errors.
get mercurial, the kernel headers and the full v4l tree from linuxtv.
from
that they just wont work at all.
(Wow. menuconfig isn't at all daunting, is it? Yikes. Finally found
FireDTV under Multimedia Support / DVB/ATSC adapters and excluded it.)
Sorry, I should have told you were to find it, I'm glad you figure it out. :-)
Regards,
Paulo
Paulo Assis wrote:
Jeff Hi,
You
Bart Hi,
The errors you are getting are usually from old modules still laying around.
try following the v4l-dvb installation how-to:
http://www.linuxtv.org/wiki/index.php/How_to_Obtain,_Build_and_Install_V4L-DVB_Device_Drivers#First_Use:_Out_with_the_Old.2C_In_with_the_New
take special attention
about compressed kernel modules conflicting)
Thanks,
bart
On 03/05/2010 10:30 AM, Paulo Assis wrote:
Bart Hi,
The errors you are getting are usually from old modules still laying
around.
try following the v4l-dvb installation how-to:
http://www.linuxtv.org/wiki/index.php/How_to_Obtain
1 - 100 of 218 matches
Mail list logo
