Crash v4l-convert: error parsing JPEG header: Not a JPG file ?

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Stream from V4L2 camera
2. wait
3. watch crash everytime

What is the expected output? What do you see instead?

$ PHD
raw pixfmt: MJPG 640x480
pixfmt: RGB3 640x480
mmap method

v4l_convert error 5, Input/output error
v4l-convert: error parsing JPEG header: Not a JPG file ?


What version of the product are you using? On what operating system?
OPENPHD 1.12.4
Ubuntu 10.04

Please provide any additional information below.

Original issue reported on code.google.com by astromap...@gmail.com on 26 Jan 2012 at 2:43

[GoogleCodeExporter]

Hi,
thanks for reporting!
Looks like You're using a input format that V4L - unsuccessfully - tries to 
convert into JPEGs instead of treating the data as a video stream.
When i run OpenPHD on my Dell XPS i get the following output:
raw pixfmt: YUYV 640x480
pixfmt: RGB3 640x480
mmap method
Could You provide additional information on the type of camera (and/or 
computer) You're using?
Regards,

Steffen Elste

Original comment by steffen....@gmail.com on 28 Jan 2012 at 10:29

[GoogleCodeExporter]

lsusb: Bus 002 Device 004: ID 046d:08c7 Logitech, Inc. QuickCam OEM Cisco VT 
Camera II

$ luvcview -l -d /dev/video4
luvcview 0.2.6

SDL information:
  Video driver: x11
  A window manager is available
Device information:
  Device path:  /dev/video4
Stream settings:
  Frame format: MJPG
  Frame size:   640x480
  Frame rate:   30 fps
Available controls of device 'Camera 1' (Type 1=Integer 2=Boolean 3=Menu 
4=Button)
V4L2_CID_BASE         (predefined controls):
 index:9963776    name:Brightness                       type:1 min:0     max:255   step:1     def:127   now:127
 index:9963777    name:Contrast                         type:1 min:0     max:255   step:1     def:32    now:32
 index:9963778    name:Saturation                       type:1 min:0     max:255   step:1     def:32    now:32
 index:9963788    name:White Balance Temperature, Auto  type:2 min:0     max:1     step:1     def:1     now:1
 index:9963792    name:Gamma                            type:1 min:100   max:220   step:120   def:220   now:220
 index:9963795    name:Gain                             type:1 min:0     max:255   step:1     def:0     now:0
 index:9963800    name:Power Line Frequency             type:3 min:0     max:2     step:1     def:2     now:2
  Menu items:
  index:0 name:Disabled
  index:1 name:50 Hz
  index:2 name:60 Hz
 index:9963802    name:White Balance Temperature        type:1 min:0     max:10000 step:10    def:4000  now:4000
 index:9963803    name:Sharpness                        type:1 min:0     max:255   step:1     def:50    now:50
 index:9963804    name:Backlight Compensation           type:1 min:0     max:2     step:1     def:1     now:1
V4L2_CID_PRIVATE_BASE (driver specific controls):

Original comment by astromap...@gmail.com on 30 Jan 2012 at 3:33

[GoogleCodeExporter]

Hi,
thanks a lot.
Honestly, i don't really know at the moment if this is a bug in our code, if 
V4L is to blame ... or it might even be a 'feature' of the webcam driver!
If You run luvcview with the 'f' option, You can set the format - could You try 
to run 'luvcview -f yuv', and only afterwards start PHD, just to see if this 
changes the frame format?
In the meantime i'll have a look at the code ...
Regards,

Steffen Elste 

Original comment by steffen....@gmail.com on 30 Jan 2012 at 6:11

[GoogleCodeExporter]

I will try that!  Thanks for the tip!

Mike

Original comment by astromap...@gmail.com on 30 Jan 2012 at 7:56

[GoogleCodeExporter]

Given all the changes for phd2, I'm marking all PHD1 unowned bugs as "WontFix". 
If somebody objects, I can undo it.

Original comment by br...@boneheads.us on 30 Aug 2013 at 12:47

• Changed state: WontFix