ZoneMinder Forums

Posted: **Thu May 22, 2008 12:09 am**

Dear all,

I found very strange problem with ZoneMinder. It is not able to decode JPEG image, even the image is valid.

The following lines can be found in my zmdc.log:

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05/22/08 01:59:02.027187 zmdc[10618].INF [Starting pending process, zmc -m 1]
05/22/08 01:59:02.039857 zmdc[10618].INF ['zmc -m 1' starting at 08/05/22 01:59:02, pid = 10735]
05/22/08 01:59:02.173704 zmdc[10618].ERR ['zmc -m 1' exited abnormally, exit status 255]

If I set debug level = 3, zm_debug.log.PID contains:

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05/22/08 01:57:42.208080 zmc_m1[10730].WAR-zm_jpeg.c/62 [Corrupt JPEG data: premature end of data segment]
05/22/08 01:57:42.208522 zmc_m1[10730].ERR-zm_jpeg.c/38 [Invalid JPEG file structure: two SOI markers]
05/22/08 01:57:42.208652 zmc_m1[10730].ERR-zm_remote_camera.cpp/1355 [Unable to decode jpeg]
05/22/08 01:57:42.208765 zmc_m1[10730].ERR-zmc.cpp/252 [Failed to post-capture monitor 0]

The image can be viewed without any problems in IE, FF, ... I tried also different sizes (640x480, 320x240) - but it does not have effect on the problem. I put this code to RemoteCamera::GetResponse():

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ofstream outdata;
outdata.open("/var/www/zm/events/1/test1.jpg");
int ind;
for (ind=0;ind<buffer.Size();ind++) {
       outdata.put(buffer[ind]);
}
outdata.close();

I can open the image in ACDSee, FF, MS Office Picture Manager, Corel Paint Shop Pro, etc - so it is probably valid JPEG file.

Do you have any idea, what could be wrong?
Thanks!

P.S.: I uploaded two JPEG's captured from webcam here:
www.dazzler.sk/test1.jpg
www.dazzler.sk/test2.jpg

Posted: **Thu May 22, 2008 4:32 pm**

onidlo wrote:...problem with ZoneMinder. It is not able to decode JPEG image, even the image is valid.
...
P.S.: I uploaded two JPEG's captured from webcam here:
www.dazzler.sk/test1.jpg
www.dazzler.sk/test2.jpg

Hi,

I just found out, what causes the problem. It is similar to my previous problem with a different IP camera http://www.zoneminder.com/forums/viewtopic.php?t=11649 and http://www.zoneminder.com/forums/viewtopic.php?t=11574. So, again: the problem was caused by improper implementation of standards. In this case, the camera does not send valid JPEG file. Even I thought, it is valid. It could be opened in several programs (Firefox, ACDSee), but other programs are not able to open it (for example GIMP).

You can take a look at those two images I posted here in my previous post. If you look carefully at bottom right corner, you can see an "effect" with squares - this is caused by missing data in the image... But I managed to get it working by replacing the following line in zm_image.cpp:

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jpeg_finish_decompress( cinfo );

by:

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jpeg_abort_decompress( cinfo );

Now it seems to be working (but with small errors in the bottom right corner), but did not have a lot of time to test it.

So, for you info:
1) Don't buy Micronet SP5511W
2) Don't buy Trendnet TV-IP110
3) Don't buy Asus Mimic CX200

Software in these cams is probably written by idiots and I'm really shocked that someone can "produce" that kind of crapy software.

Posted: **Tue Sep 09, 2008 5:16 am**

I've a dark square with one dlink DCS-2100 camera. I'm using the version 1.22.3 on ubuntu 8.04 server.

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Sep  9 00:14:30 intranet zmdc[29109]: INF [Starting pending process, zmc -m 1] 
Sep  9 00:14:30 intranet zmdc[29767]: INF ['zmc -m 1' started at 08/09/09 00:14:30] 
Sep  9 00:14:30 intranet zmdc[29109]: INF ['zmc -m 1' starting at 08/09/09 00:14:30, pid = 29767] 
Sep  9 00:14:30 intranet zmc_m1[29767]: INF [Debug Level = 0, Debug Log = <none>]
Sep  9 00:14:30 intranet zmc_m1[29767]: INF [Starting Capture]
Sep  9 00:14:30 intranet zmc_m1[29767]: ERR [Not a JPEG file: starts with 0x35 0x39]
Sep  9 00:14:30 intranet zmdc[29109]: ERR ['zmc -m 1' exited abnormally, exit status 255]

What means Not a JPEG file? I can open the JPEG file with gimp, firefox, gthum, etc.

Posted: **Fri Jan 29, 2010 7:44 pm**

having the same problem with a dlink dcs-5300, details posted here:
http://www.zoneminder.com/forums/viewto ... highlight=

Posted: **Sat Dec 04, 2010 11:08 pm**

I could not for the life of me get the DCS-5300 and zoneminder 1.24-2 to work, on a standard Centos 5.5 install. FFMPEG is a moving target and the camera software from dlink is really crappy. here are the changes i had to make in order for FFMPEG and the dlink cameras to work nicely on centos 5.5 64bit.

http://www.zoneminder.com/wiki/index.php/CentOS

Replace the following lines (2) in zm_image.cpp (camera fix):

Code:
jpeg_finish_decompress( cinfo );

by:

Code:
jpeg_abort_decompress( cinfo );

(zoneminder / ffmpeg fix)

cd /usr/src

svn checkout -r 21010 svn://svn.mplayerhq.hu/ffmpeg/trunk ffmpeg

cd libswscale

svn switch svn://svn.ffmpeg.org/mplayer/trunk/libswscale -r 30172

./configure --with-ffmpeg=/usr/local/bin --enable-crashtrace=no --enable-mmap=no --enable-debug=no --with-mysql=/usr/local/bin
--with-libarch=lib64 --with-webdir=/var/www/html/zm --with-cgidir=/var/www/cgi-bin --with-webuser=apache --with-webgroup=apache ZM_DB_HOST=localhost ZM_DB_NAME=zm ZM_DB_USER=zmuser ZM_DB_PASS=zmpass --with-extralibs="-L/usr/lib64 -L/usr/lib64/mysql"

Cameras:

options / network / http version 1.0 (not default 1.1)

source:

max frames=2
max frames when alert = 10
path: /cgi-bin/video.jpg?size=3 (remember to set cam to the same)
resolution: 704 x 480

So basically use a specific version of FFMpeg and make ZM ignore/abort broken frames from the camera.

And for the first time i have an error free setup of Zone Minder.

Regards,

Martin Madsen

Posted: **Mon Dec 06, 2010 10:42 am**

There are various softwares available in the market which helps in converting the files easily and quickly into the JPEG.

ZoneMinder Forums

ZM is not able to decode JPEG file

ZM is not able to decode JPEG file

Re: ZM is not able to decode JPEG file

camera trouble