search for: v4l

This long overdue release features build compatibility with newer X servers and support for v4l2 devices. Adam Jackson (6): Remove call to LoaderGetOS Remove a bogus memset Fix distcheck v4l 0.3.0 Alan Coopersmith (2): Remove xorgconfig & xorgcfg from See Also list in man page Update Sun license notices to current X.Org standard form Cyril Brulebois...

Hi all, Hey I'm trying to do some web cam stuff, and I found this link: http://freshmeat.net/projects/libv4l/releases/333037 I was doing the "rpm -qa | grep v4l" and nothing comes up, I did "ls path_to_centos/RPMS/* | grep v4l " and nothing comes up, I did 'yum provides "*/libv4l*"' and nothing comes up. Is the CentOS library for v4l named something different? Is th...

Adam Jackson (3): Death to RCS tags. Fix ioctl() outparameter on LP64 systems. v4l 0.2.0 Fabrice Lorrain (1): Fix typo in the manpage. James Cloos (2): Rename .cvsignore to .gitignore Add *~ to .gitignore to skip patch/emacs droppings Matthieu Herrb (1): Makefile.am: nuke RCS Id git tag: xf86-video-v4l-0.2.0 http://xorg.freedesktop.org/archive/individ...

...on? I've a pchdtv-3000 card I am trying to record from. I can successfully record audio/video using streamer or watch television with audio using tvtime, so I know the audio is there. I want to record directly to theora. I am trying to do so using ffmpeg2theora like so: ffmpeg2theora --v4l /dev/video0 -o test.ogg This records video but no audio. Should I be able to do this? Do I need to stream the audio separately? Any help or advice is greatly appreciated! - James Clark james@weno.net

Hi Christoph, On Wed, Aug 19, 2020 at 8:56 AM Christoph Hellwig <hch at lst.de> wrote: > > The V4L2-FLAG-MEMORY-NON-CONSISTENT flag is entirely unused, Could you explain what makes you think it's unused? It's a feature of the UAPI generally supported by the videobuf2 framework and relied on by Chromium OS to get any kind of reasonable performance when accessing V4L2 buffers in the users...

Hi all - Since upstream patches the stock 2.6.18 kernel into something that is not 2.6.18 (for the rest of the world) I am having issues trying to compile some packages like v4l (latest is needed for a different project). When compiling packages like v4l that a doing conditionals based on kernel number - but - header files are messing other things up... is there some great trick to getting things to compile or behave nicely? What do others do in this circumstance? Note...

in wine/dlls/qcap/v4l.c: ReadThread() --> OutputPin_GetDeliveryBuffer((OutputPin *)capBox->pOut, &pSample, NULL, NULL, 0); --> IMediaSample_SetTime(*ppSample, tStart, tStop); in wine/dlls/quartz/memallocator.c: StdMediaSample2_GetTime(IMediaSample2 * iface, REFERENCE_TIME * pStart, REFERENCE_TIME *...

hia, just found this mailing list and was wondering if i could ask here some help to understand why i get this error: bash-3.1# ffmpeg2theora --v4l /dev/video0 --inputfps 15 -x 160 -y 128 -o t.ogg No such file or directory File `' does not exist or has an unknown data format. im trying it via theorur but it also appears using plain command line. my /dev/video0 works with freej and xawtv so is not the camera, that uses the pwc module. w...

...ent hints. Namely, the queue consistency (memory coherency) user-space hint because, as it turned out, the kernel implementation of this feature was misusing DMA_ATTR_NON_CONSISTENT. The patch revers both kernel and user space parts: removes the DMA consistency attr functions, rollbacks changes to v4l2_requestbuffers, v4l2_create_buffers structures and corresponding UAPI functions (plus compat32 layer) and cleanups the documentation. Signed-off-by: Christoph Hellwig <hch at lst.de> Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky at gmail.com> Signed-off-by: Christoph Hellwig &...

The V4L2-FLAG-MEMORY-NON-CONSISTENT flag is entirely unused, and causes weird gymanstics with the DMA_ATTR_NON_CONSISTENT flag, which is unimplemented except on PARISC and some MIPS configs, and about to be removed. Signed-off-by: Christoph Hellwig <hch at lst.de> --- .../userspace-api/media/v4l/bu...

Hi, folks. Ever since we brought some of our servers up to 6.x, where the gspca module comes with the kernel, instead of us building it, we've been seeing problems. One system gives very strange loops - someone walks through, then repeat a few times, then the next motion, etc. The current problem is that one camera went out on a different server (it's 6.2, and I'm hoping to bring

Hi Tomasz, On 2020-08-19 12:16, Tomasz Figa wrote: > Hi Christoph, > > On Wed, Aug 19, 2020 at 8:56 AM Christoph Hellwig <hch at lst.de> wrote: >> >> The V4L2-FLAG-MEMORY-NON-CONSISTENT flag is entirely unused, > > Could you explain what makes you think it's unused? It's a feature of > the UAPI generally supported by the videobuf2 framework and relied on > by Chromium OS to get any kind of reasonable performance when > accessing...

Hi all. I post a small app I made that create 2 clips using a V4L device. I would like to get every tips you think it's useful... Some notes: - I make 2 clips because in our project we create series of clips and it's important to check that the all the resources ( memory, descriptors, etc. ) are freed correctly and to reuse all the resources that can...

I am looking for any information on using vlc and asterisk. I'd like to take a normal video phone and call into a desktop with a usb camera. Is this possible? Thanks, Jerry

Hello all, I am trying to install Epiphan's ( http://www.epiphan.com/ ) VGA2USB device on a Centos 6 machine and when I am trying to compile and install the driver for it I get the following errors: WARNING: /lib/modules/2.6.32-279.2.1.el6.x86_64/extra/vga2usb.ko needs unknown symbol videobuf_streamoff WARNING: /lib/modules/2.6.32-279.2.1.el6.x86_64/extra/vga2usb.ko needs unknown symbol

Hi guys. Just curious if there's any progress on bug 16147 http://bugs.winehq.org/show_bug.cgi?id=16147 Hope this is the place to ask. Bob

Irritating quirkyness: we have a bunch of videocams. To use, we use gspca. Usually, on an upgrade, I just go into the gspca directory (which appears, from their website, to have not been updated since '07), make clean, make, make install. Having gone up to 5.5, did the same. What's happening now is that it works, delivers the mpgs... but dumps errors in the logs: <snip> kernel:

This talk of cameras has reminded me of a problem I've not yet been able to solve. I have a Logitech Communicate STX ( ID 046d:08ad Logitech, Inc. QuickCam Communicate STX ) This seems to work under v4l on CentOS 5.4. If I load xawtv (from rpmforge) then I can view the image from the camera. But what I'd like to be able to do is have the image appear on a web page (maybe streaming video or maybe multi-part image using old-fashioned server-push web technology from 1995 :-)). Anyone have any...

...g 19, 2020 at 1:51 PM Robin Murphy <robin.murphy at arm.com> wrote: > > Hi Tomasz, > > On 2020-08-19 12:16, Tomasz Figa wrote: > > Hi Christoph, > > > > On Wed, Aug 19, 2020 at 8:56 AM Christoph Hellwig <hch at lst.de> wrote: > >> > >> The V4L2-FLAG-MEMORY-NON-CONSISTENT flag is entirely unused, > > > > Could you explain what makes you think it's unused? It's a feature of > > the UAPI generally supported by the videobuf2 framework and relied on > > by Chromium OS to get any kind of reasonable performance w...

...me how to create on-the-fly live >> video streaming? What program should i installed? Slightly off-topic, but there are tie-ins to Ogg here. There are at least three approaches to Theora-based live streaming: -ffmpeg2theora (+Icecast2) Works best with DV video, as combining audio with v4l input is not yet implemented. This tool is a standard-bearer for Theora encoding. -VLC (+Icecast2) Documented here: http://en.flossmanuals.net/TheoraCookbook/VLCStreaming I haven't much experience here -- perhaps others can chime in? -Flumotion There are two versions: DIY-FLOS...