[gst-devel] JPEG truncation

[Stefan Kost]

Am 03.03.2010 12:19, schrieb Thomas Andrews:
> Hi,
> 
> I have constructed a plugin based on videotestsrc to display images from 
> a Baumer camera. (Source here: http://www.grok.org.za/gst/)
> 
> My problem is that the plugin does not work properly if it can only get 
> one frame at a time. The result is that if I create a jpeg using the 
> command below, there is some corruption right at the bottom of the JPEG.
> 
> gst-launch-0.10 baumercamsrc ! ffmpegcolorspace ! jpegenc quality=100 ! 
> filesink location=/tmp/bar.jpg
> 
> Even if I simulate data from the camera, I get the problem, so it's the 
> plugin that's at fault. It requests exactly the right buffer size each 
> time, so it's not like it's actually getting too little data.
> 
> It just seems that videotestsrc 'expects' continuous data. How would I 
> change that?

what do you mean with "videotestsrc 'expects' continuous data". You can use
videotestsrc num-buffers=1 to push exactly one frame and then go to eos.

Stefan

> 
> Many thanks,
> Thomas
> 
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