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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Hi,<o:p></o:p></span></font></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'> </span></font>We
need to simultaneously capture/preview video on a TI DM365 while asynchronously
taking JPEG stills from the same video stream. Playing around with
gst-launch, it only seems to work correctly when v4l2src num-buffers=1. Sample
working pipeline:<o:p></o:p></p>
<p><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>gst-launch
-v v4l2src num-buffers=1 always-copy=FALSE input-src=composite \<br>
! TIVidResize contiguousInputFrame=TRUE \<br>
! 'video/x-raw-yuv,width=(int)736,height=(int)480' \<br>
! queue \<br>
! TIImgenc1 iColorSpace=UYVY oColorSpace=YUV420P qValue=75
engineName=codecServer \<br>
! queue \<br>
! filesink location=output.jpg<o:p></o:p></span></font></p>
<p><font size=3 face="Times New Roman"><span style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>If I
modify the above to remove num-buffers=1, or even just set num-buffers=2, it
hangs and never produces a valid JPEG. I would have expected it to just
overwrite output.jpg<o:p></o:p></span></font></p>
<p><font size=3 face="Times New Roman"><span style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>If, I
change this to something that is, for instance, previewing the video at the
same time, things break as well. Sample Pipeline:<o:p></o:p></span></font></p>
<p><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>gst-launch
-v v4l2src always-copy=FALSE input-src=composite \<br>
! queue \<br>
! tee name= t \<br>
! 'video/x-raw-yuv,width=(int)736,height=(int)480' \<br>
! tidisplaysink2 video-standard=vga display-output=lcd mmap-buffer=FALSE
dma-copy=TRUE \<br>
t. \<br>
! queue \<br>
! 'video/x-raw-yuv,width=(int)736,height=(int)480' \<br>
! videorate \<br>
! TIImgenc1 iColorSpace=UYVY oColorSpace=YUV420P qValue=75
engineName=codecServer \<br>
! filesink location=output.jpg<o:p></o:p></span></font></p>
<p><font size=3 face="Times New Roman"><span style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<p><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>Is it
possible to create a gstreamer pipeline using “standard” parts to
accomplish what I need, or will I need to modify my JPEG encoder element to
make this work? <o:p></o:p></span></font></p>
<p><font size=3 face="Times New Roman"><span style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<p><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>Thanks!<o:p></o:p></span></font></p>
<p><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>Paul<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
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