Public bug reported:

I have a logitech C920 webcam, and Kubuntu 14.04LTS, arch x86_64

png files are saved correctly.

When I try to save a snapshot image with guvcview in jpeg format, the
file is malformed

(specifically, gwenview says

"gwenview(29407) Gwenview::JPEGErrorManager::errorExitCallBack: Quantization 
table 0x00 was not defined
gwenview(29407): libjpeg error in src"

but I can't open the file in irfanview either, so I think it is the file
that is at fault.)

steps to reproduce:
start guvcview
go to menu photo>>file, and choose jpg file output
in main panel click "cap. image"
quit guvcview and attempt to open image file.

expect: to see image
actual: image will not load (incorrect format)

** Affects: guvcview (Ubuntu)
     Importance: Undecided
         Status: New

** Description changed:

- I have a logitech C920 webcam, and Kubuntu 14.04.
+ I have a logitech C920 webcam, and Kubuntu 14.04LTS, arch x86_64
  
  png files are saved correctly.
  
  When I try to save a snapshot image with guvcview in jpeg format, the
  file is malformed
  
  (specifically, gwenview says
  
- "gwenview(29407) Gwenview::JPEGErrorManager::errorExitCallBack: Quantization 
table 0x00 was not defined 
+ "gwenview(29407) Gwenview::JPEGErrorManager::errorExitCallBack: Quantization 
table 0x00 was not defined
  gwenview(29407): libjpeg error in src"
  
  but I can't open the file in irfanview either, so I think it is the file
  that is at fault.)
  
  steps to reproduce:
  start guvcview
  go to menu photo>>file, and choose jpg file output
  in main panel click "cap. image"
  quit guvcview and attempt to open image file.
  
  expect: to see image
  actual: image will not load (incorrect format)

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https://bugs.launchpad.net/bugs/1338959

Title:
  guvcview exported jpeg file incorrect

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