[Libav-user] RTP/MJPEG low contrast image on low quality setting

[Ico]

Hello,

I have a device sending out a MJPEG/RTP stream on a low quality setting.
Decoding and displaying the video with libavformat results in a washed
out, low contrast, greyish image. Playing the same stream with VLC results
in proper color representation. 

Screenshots for comparison:

  http://zevv.nl/div/libav/shot-ffplay.jpg
  http://zevv.nl/div/libav/shot-vlc.jpg

A pcap capture of a few seconds of video and SDP file for playing the
stream are available at

  http://zevv.nl/div/libav/mjpeg.pcap
  http://zevv.nl/div/libav/mjpeg.sdp

(On linux, replay the stream with tcpreplay: sudo tcpreplay -i lo mjpeg.pcap)

Can anyone give an explanation on the difference in interpretation
between libav and VLC? Is it likely that the problem is in the device
generating the JPEG stream?

Thank you,

Ico