D-Link DCS-930L

Wed Oct 12 10:23:17 PDT 2011

Thank you for your help. I have it working, just a couple of details to work
out.

From: gstreamer-devel-bounces+rafael=lanline.com at lists.freedesktop.org
[mailto:gstreamer-devel-bounces+rafael=lanline.com at lists.freedesktop.org] On
Behalf Of Hoyt, David
Sent: Monday, October 10, 2011 10:48 PM
To: Discussion of the development of and with GStreamer
Subject: RE: D-Link DCS-930L

The two modes should have nothing to do with it. I think the camera
manufacturer only provides those 2 because IE doesn’t support playing back
motion jpeg directly in the browser. So it provides an active-x control for
watching the video. As for the colors being off, that could be due to
colorspace conversions and/or the h2.64 encoding with x264enc. Look around
for documentation on those elements and how to tweak them for what you want.
If you want essentially a lossless file type (that is, with zero colorspace
conversions and zero additional bit manipulation beyond what the camera is
streaming the video out on), just stick a filesink on the end. e.g.:

gst-launch souphttpsrc location=http://guest:@96.57.244.98/videostream.cgi
num-buffers=1000 ! filesink location=dcs.mjpg

To play it back, do something like:

gst-launch filesrc location=dcs.mjpg ! multipartdemux ! jpegdec !
ffmpegcolorspace ! videorate ! video/x-raw-yuv,framerate=10/1 !
autovideosink

I just tried both those and everything looked like it worked correctly.

From: gstreamer-devel-bounces+hoyt6=llnl.gov at lists.freedesktop.org
[mailto:gstreamer-devel-bounces+hoyt6=llnl.gov at lists.freedesktop.org] On
Behalf Of Rafael Guerra
Sent: Monday, October 10, 2011 7:09 PM
To: 'Discussion of the development of and with GStreamer'
Subject: RE: D-Link DCS-930L

It look like it recorded but only a black screen. The video actually is not
totally black even at night. It looks like the setting are not quite right.
If 

You look at the video through the camera interface it doesn’t actually get
the right image.

There are two modes of login in, one for firefox and another IE,  I wonder
if this is the issue ?

From: gstreamer-devel-bounces+rafael=lanline.com at lists.freedesktop.org
[mailto:gstreamer-devel-bounces+rafael=lanline.com at lists.freedesktop.org] On
Behalf Of Hoyt, David
Sent: Monday, October 10, 2011 7:16 PM
To: Discussion of the development of and with GStreamer
Subject: RE: D-Link DCS-930L

The following worked for me and VLC was able to play it back:

gst-launch souphttpsrc location=http://guest:@96.57.244.98/videostream.cgi
num-buffers=1000 ! multipartdemux ! jpegdec ! videorate !
video/x-raw-yuv,framerate=10/1 ! ffmpegcolorspace ! x264enc ! flvmux !
filesink location=dcs.flv

Hope it makes sense.

From: gstreamer-devel-bounces+hoyt6=llnl.gov at lists.freedesktop.org
[mailto:gstreamer-devel-bounces+hoyt6=llnl.gov at lists.freedesktop.org] On
Behalf Of Rafael Guerra
Sent: Monday, October 10, 2011 3:47 PM
To: 'Discussion of the development of and with GStreamer'
Subject: RE: D-Link DCS-930L

Try user guest and no password. The ip address is fine.

From: gstreamer-devel-bounces+rafael=lanline.com at lists.freedesktop.org
[mailto:gstreamer-devel-bounces+rafael=lanline.com at lists.freedesktop.org] On
Behalf Of Hoyt, David
Sent: Monday, October 10, 2011 6:13 PM
To: Discussion of the development of and with GStreamer
Subject: RE: D-Link DCS-930L

When I try it, the provided URL isn’t valid. From what I can tell, it should
be: http://96.57.244.98/videostream.cgi

However, the provided username/password (admin/Supp0rt1) don’t seem to work
and the camera is blocking streaming video. Perhaps you could setup the
camera to stream anonymously? It’s hard to help if you can’t access the
stream and see what’s going on. If that’s a problem, dump the video stream
to a file and then attach it (if it’s tiny) or provide a public url where it
can be accessed.

From: gstreamer-devel-bounces+hoyt6=llnl.gov at lists.freedesktop.org
[mailto:gstreamer-devel-bounces+hoyt6=llnl.gov at lists.freedesktop.org] On
Behalf Of Rafael Guerra
Sent: Monday, October 10, 2011 2:55 PM
To: 'Discussion of the development of and with GStreamer'
Subject: RE: D-Link DCS-930L

I am getting the following error :

Setting pipeline to PAUSED ...

Pipeline is PREROLLED ...

ERROR: from element /GstPipeline:pipeline0/GstSoupHTTPSrc:souphttpsrc0:
Error parsing URL.

Additional debug info:

gstsouphttpsrc.c(1128): gst_soup_http_src_build_message ():
/GstPipeline:pipeline0/GstSoupHTTPSrc:souphttpsrc0:

URL: dcs.flv

ERROR: pipeline doesn't want to preroll.

Setting pipeline to PAUSED ...

Setting pipeline to READY ...

Setting pipeline to NULL ...

Freeing pipeline ...

When trying to read from the camera using the following line :

gst-launch souphttpsrc
location=http://admin:Supp0rt1@96.57.244.98/video/mjpg.cgi!multipartdemux!jp
egdec!flvmux!filesink location=dcs.flv

Any help would be appreciated.

From: gstreamer-devel-bounces+rafael=lanline.com at lists.freedesktop.org
[mailto:gstreamer-devel-bounces+rafael=lanline.com at lists.freedesktop.org] On
Behalf Of android6011
Sent: Tuesday, October 04, 2011 9:45 PM
To: Discussion of the development of and with GStreamer
Subject: Re: D-Link DCS-930L

I actually have this camera and was playing with it and gstreamer last week.
I hope what I am about to mention is not way over your head and helps give
you a pointer as to where to start with this camera. As for starting with
gstreamer, just keep reading through the mailing list and the docs on the
main site

First thing is to narrow down the source of the video. I have yet to find an
accessible audio stream but have not put to much time into looking. The
video I found are

http://user:pass@192.168.1.15/image/jpeg.cgi

http://user:pass@192.168.1.15/video/mjpg.cgi  

replace user,pass and the ip with yours.

the mjpg stream is what you are going to want to look at. Also the elements
souphttpsrc, (most likely)multipartdemux,jpegdec and flvmux.

My problem has been that multipartdemux refuses to work because "Boundary
not found in the multipart header" . I have looked at the stream and the
boundary is:

--video boundary--

but specifying it still does not work which is where I was getting hung up. 

This pipeline does not work but just as a rough example

gst-launch souphttpsrc location=http://user:pass@192.168.1.15/video/mjpg.cgi
! multipartdemux ! jpegdec ! flvmux ! filesink location=dcs.flv

Again, this pipeline does not work but I believe it to be a step in the
right direction. 

For those that may be able to help with the multipartdemux issue wget of the
mjpg.cgi shows the following and this pipeline always fails with " Boundary
not found in the multipart header" 

gst-launch souphttpsrc location=http://admin:@192.168.1.15/video/mjpg.cgi !
multipartdemux boundary="--video boundary--" ! jpegdec ! fakesink

wget http://user:pass@192.168.1.15/video/mjpg.cgi mjpg.cgi contents:

Content-length: 45536

Date: 10-04-2011 07:41:20 PM IO_00000000_PT_000_000

Content-type: image/jpeg

(jpeg data)

--video boundary--

Content-length: 45607

Date: 10-04-2011 07:41:20 PM IO_00000000_PT_000_000^_Ú¯^[ï¿½ ,ï¿½%Û¯
5ï¿½Õ

Content-type: image/jpeg

(jpeg data)

etc..

-Ryan

On Thu, Sep 29, 2011 at 1:01 PM, Rafael Guerra <rafael at lanline.com> wrote:

I have loaded gstreamer on to FreeBSD and I am looking to collect the video
from a video camera,
DCS-930L (D-Link) for example, and save it to a file that I would like to
play it back using an internet browser.
I am mostly interested in collecting and saving the file to a standard video
format (.FLV if possible)

Being new to gstreamer I am looking for some guidance as to how to start
and/or a sample program to start from.
I am an experienced programmer in C and C++ but a novice to gstreamer.

Rafael

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