Capturing jpegs from an h264 stream

Alex Hewson mock at mocko.org.uk
Thu Jun 6 16:04:27 PDT 2013


On 05/06/2013 16:58, Chuck Crisler wrote:
> Try it, you don't have anything to lose.

Good point.  Here goes:

raspivid -n -t 1000000 -vf -b 2000000 -fps 25 -o - |  \
   gst-launch-1.0 fdsrc fd=0 ! decodebin \
     ! capssetter caps='video/x-raw,framerate=25' replace=true ! videorate \
     ! video/x-raw,framerate=1/1 ! videorate ! jpegenc quality=75 \
     ! multifilesink location='img_%04d.jpg'


root at raspberrypi:~/streamtest# ./l2.sh
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...

(gst-launch-1.0:4544): GStreamer-WARNING **: 
gstpad.c:4503:store_sticky_event:<typefind:src> Sticky event 
misordering, got 'caps' before 'stream-start'
ERROR: from element 
/GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstOMXH264Dec-omxh264dec:omxh264dec-omxh264dec0: 
Internal data stream error.
Additional debug info:
gstomxvideodec.c(1670): gst_omx_video_dec_loop (): 
/GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstOMXH264Dec-omxh264dec:omxh264dec-omxh264dec0:
stream stopped, reason not-negotiated
ERROR: pipeline doesn't want to preroll.
Setting pipeline to NULL ...
Freeing pipeline ...

Tried removing that second videorate element but it makes no difference.


-- 
Alex Hewson
m: +44 7895 265219 | e: mock at mocko.org.uk | Skype: alex.hewson



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