Bad Jpeg quality

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Bad Jpeg quality

Renaud GUEZENNEC
Hi all,

I'm using gstreamer to display rtsp stream from IP camera. The stream is jpeg encoded. I use this pipeline:
gst-launch-0.10 rtspsrc location=rtsp://192.168.1.12:8554/Valeo latency=0 ! rtpjpegdepay ! jpegdec idct-method=islow ! autovideosink
 
But the quality is very bad. It's look like a lazy mode for decoding the jpeg stream, I tried different parameter for idct-method property but nothing changes. 
The stream has better quality rendering with VLC or Qt+Live555. 

Is there a way to improve the visual quality? 

Regards
Renaud
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