Hi Guys,
In my apparently eternal quest for a decent HD capture card with support
for v4l2 I couldn't find an existing table of cards, I've put one up the
Wiki. I hope I've done it correctly, these tables are horrible to maintain.
Anyhow if people would like to look at it, I'd be grateful
While trying to debug a particularly recalcitrant segfault on entering
GStreamer, I found all this on dmesg. I don't know if it is connected,
but I haven't seen it before. I'm using a Dazzle DVC 100 Rev 1.1.
I get it across several different platforms (this is an Asus Zen
laptop). The
While trying to debug a particularly recalcitrant segfault on entering
GStreamer, I found all this on dmesg. I don't know if it is connected,
but I haven't seen it before. I'm using a Dazzle DVC 100 Rev 1.1.
I get it across several different platforms (this is an Asus Zen
laptop). The
it at all?
Otherwise I should just focus on EasyCap for my raw SD capture and move on.
Thanks,
Steve
On 23/04/14 16:22, Steve Cookson wrote:
Hi Guys,
I would be interested in your views of the comparisons of these
images. The still is the image of a duodenum taken during an
endoscopy
Hi Guys,
I would be interested in your views of the comparisons of these images.
The still is the image of a duodenum taken during an endoscopy and
recorded to a DVD player (via an s-video or composite cable). Although
the endoscope is an HD endoscope, the DVD recorder isn't and the
On 16/04/14 19:15, Steve Cookson wrote:
For no good reason AFAICT the initial resolution is set to 320x240. But
you can just set it to 640x480 (or more likely, 720x480 for NTSC or
720x576 for PAL):
v4l2-ctl -v width=640,height=480
Hi Guys,
The attachments here are sent using tinypic.com
Hi Guys,
I've been playing around with this on my Kubuntu 13.10. Apart from the
issue that you know I have of the altera-stapl.ko file arriving in the
wrong directory, I think it's a good basis for moving forwards. What is
the process for including this in the Linux TV baseline?
I feel
Hi Hans,
Thanks for this.
On 16/04/14 10:58, Hans Verkuil wrote:
find /lib/modules/`uname -r`/|grep altera
If you have duplicate altera-stapl.ko files, then that might explain it.
In that case remove the older module.
There are indeed duplicates. I removed the older one and dmesg went
Hi Guys,
On 16/04/14 14:20, Hans Verkuil wrote:
However looking at the tree structure I have to say I don't understand
it. Firstly there seem to be two equivalent branches in
/lib/modules/:
1) drivers/linux/drivers/misc/altera-stapl/
and
2) drivers/misc/altera-stapl/
Before
Hi Guys,
On 14/04/14 15:02, Hans Verkuil wrote:
I'd appreciate it if you can test this with a proper video feed.
Ok, here is the first issue:
1) I have a 640x480 video feed which displays appropriately through
stk1160, but only displays at 320x240 in ImpactVCBe.
In fact this is the same
. The stk1160 s-video at 640x480 is much better than the
ImpactVCB-e on either composite or s-video.
Regards
Hans Verkuil hverk...@xs4all.nl wrote:
On 04/16/2014 07:11 PM, Steve Cookson wrote:
Hi Guys,
On 14/04/14 15:02, Hans Verkuil wrote:
I'd appreciate it if you can test
Hi Hans,
On 14/04/14 15:02, Hans Verkuil wrote:
I'd appreciate it if you can test this with a proper video feed.
Well, I've been installing the patch today. I finished the compilation
script and the card is not detected. Here's what I did:
It's been a bit hard-going because my ISP has
On 15/04/14 18:13, Hans Verkuil wrote:
Somewhat strange error message. Does 'dmesg' give you any useful info?
I get this:
image@image-H61M-DS2:~$ dmesg | grep -i cx23885
[ 13.237914] cx23885: disagrees about version of symbol altera_init
[ 13.237917] cx23885: Unknown symbol altera_init
On 15/04/14 19:44, Steve Cookson wrote:
[ 13.237914] cx23885: disagrees about version of symbol altera_init
[ 13.237917] cx23885: Unknown symbol altera_init (err -22)
Is it a regression issue?
https://github.com/ljalves/linux_media/issues/2#issuecomment-23365778
I'm on 3.11.0-18.
Regards
Hi People,
Could I, please, I clarify what the purposes of this list are?
I am developing a system to collect medical raw video based on Linux. I
have tested a number of SD and HD adaptors for this project some of
which have worked to a greater or lesser extent.
Is this the right place for
Hi Hans,
Thanks for your reply.
On 11/04/14 08:50, Hans Verkuil wrote:
HD is well supported for embedded systems
What does embedded systems mean, you mean like the decklink proprietary
software?
Regards
Steve
--
To unsubscribe from this list: send the line unsubscribe linux-media in
the
So I'm back to the Hauppauge ImpactVCB-e 01385.
Apparently it's fully supported by the current Linux kernel:
Model Standard Interface Supported Comments
ImpactVCB-e Video PCIe ✔ Yes No
tuners, only video-in. S-Video Capture works with
Hi Hans,
Thanks for this, I'll do as you suggested.
On 11/04/14 10:45, Hans Verkuil wrote:
I have serious doubts whether this is actually supported. I see no mention of
that board in the cx23885 driver. I wonder if there is a mixup between the
ImpactVCB (which IS supported) and the
Hi Hans,
On 11/04/14 11:35, Hans Verkuil wrote:
Actually, I would recommend that you try playing with the 'card=' option to
see if you can get something that works. I suspect that adding support for
this card isn't hard.
Well I did try the card= option before and it worked in a way. The
Hi Guys,
Sorry to go on about the Hauppauge ImpactVCB-e 01385, but it's a couple
of years and version 12.04, since I last asked.
This page:
http://linuxtv.org/wiki/index.php/Hauppauge
Now shows:
Table of analog-only devices sold by Hauppauge Model Standard Interface
Supported Comments
The issue is nobody cares enough to
update the driver to support
your card and make it work out of the box.
Hi Steve,
Thanks for your response.
Well not nobody because I do. How do I do it? If you would guide me through, I
will happily update it.
Regards
Steve.
Steven Toth
Hi All,
Occasionally I see emails suggesting that a video capture card has not
been configured properly on Linux and that the problems the questioner
is experiencing is down to this.
I have no idea what this means.
I usually use a gstreamer command like:
gst-launch v4l2src
On 26/09/2013 08:32, Hans Verkuil wrote:
Typically the video standard needs to be correct (e.g. PAL vs NTSC),
and the video format produced by the video capture card must be
supported by the application.
Ask them to run 'v4l2-ctl -d /dev/video0 --all', that gives a good
overview of the
On 16/09/2013 19:09, Devin Heitmueller wrote:
To be clear, this card is a *raw* capture card. It does not have any
hardware compression for H.264. It's done entirely in software.
Ok, well I misunderstood that. And, in addition, I also thought that
hardware encoding *reduced* latency,
On 17/09/2013 12:38, Devin Heitmueller wrote:
Nope, the opposite. In order to compress the video you need to store
enough context to look for repetition.
Ok, quite intuitive, once you know what to look for.
Yup. We've been through the exercise several times with various HD
capture boards.
the Dazzle?
Regards
Steve.
On 15/09/2013 17:26, Devin Heitmueller wrote:
On Sep 15, 2013 11:35 AM, Steve Cookson i...@sca-uk.com wrote:
Hi Guys,
I seem to be having immense difficulty getting the Hauppauge
ImpactVCB-e 01381 PCIe card working on Linux (I'm using Kubuntu 13.04
On 16/09/2013 14:38, Devin Heitmueller wrote:
I'm not sure what other cards you've tried. Nowadays they should all
deliverable comparable performance for s-video (since no chroma
separation is involved), if they don't then it's almost certainly a
Linux driver bug.
If you have a
Hi People,
I just wrote an email to this group about the Hauppauge 01381. Really it
was a fall-back choice. If I can't get anything else then that might be
my only option left.
But here is my preferred choice. The Startech PEXHDCAP.
It costs about $100 here:
Hi Guys,
I seem to be having immense difficulty getting the Hauppauge ImpactVCB-e
01381 PCIe card working on Linux (I'm using Kubuntu 13.04) with greater
than 320x240 resolution.
This is what I've done:
lspci recognises the card but only as a Conexant card (Vendor ID =
14f1:8852), not
over the next month or so, so if you want
to keep in touch, I'll let you know how it goes.
Regards
Steve
-Original Message-
From: James Board [mailto:jpboa...@yahoo.com]
Sent: 18 June 2013 13:19
To: Steve Cookson
Subject: Re: HD Capture Card (HDMI and Component) output raw pixels
Hi
Hi Jim,
I don't want to configure a RAID either, but if I purchase one SSD with
400 MB/sec write speeds, that might be good.
Hmm... nice idea. Did you have any particular model in mind? If you had a
link, I might be interested. I wouldn't know about sizing. I don't know how
much space HD raw
Hi Guys,
I'm looking for a capture card for a Linux
system. I'd like to be able to capture Component
as well as HDMI (from non-encrypted non-HDCP)
sources. I'd also like to capture the raw pixels,
and not use real-time MPEG encoding. A lossless
output format like huffyuv is okay
Hi Guys,
I have test a number of internal and external analogue video capture cards
with Kubuntu 12.04 with more or less success.
But I have failed find any cost effective digital ones.
Could someone point me at a card which is:
- cost-effective
- internal (PCIe)
- uses hardware compression
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