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   mriesch: <u>pinchartl</u>: ndufresne: it seems that the remainder of the gstreamer pipeline is too slow --&gt; after replacing ! jpegdec ! xvimagexink with ! fakesink the "out of sync" warnings vanish (fid bit looks good, btw). thanks for your pointers!
   ndufresne: <u>mriesch</u>: if you have more cores, you can try and place jpegdec and xvimagesink on their own threads, that is dow by adding "queue" in front of the element you want to run on it's own thread
   <br> I wonder if the FFMPEG decoder (avdec_mjpeg) have multi-thread decoding support (assuming this is feasible with jpeg at all)
   mriesch: <u>ndufresne</u>: that's worth a shot. is there a simple way to create different threads with gst-launch
   <br> ?
   <br> <u>ndufresne</u>: sorry, skipped part of your message
   ndufresne: no worries, and indeed, queue element is creating a thread, and mostly use for that
   mriesch: <u>ndufresne</u>: tried with the extra "queue" element, but did not seem to make any difference
   ndufresne: <u>mriesch</u>: I guess some analyses needed, checking CPU usage, etc.
   mriesch: <u>ndufresne</u>: in the end i would like to use hw-accelerated decoding anyway, but that didn't work out of the box. but at least it seems that the uvc hardware works fine (correct fid bits, timestamps, etc)
   <br> so partial success :-)
   ndufresne: <u>mriesch</u>: ok, and what's the HW again ?
   mriesch: for decoding? intel kaby lake
   ndufresne: ok, so VA API
   <br> you need VAProfileJPEGBaseline
   <br> have you ran vainfo to verify ?
   mriesch: <u>ndufresne</u>: yes, and gst-inspect vaapi, which showed no features. apparently the driver is blocked.
   <br> <u>ndufresne</u>: well, i'll call it a day and check vaapi out tomorrow. thanks for your help!
   ndufresne: <u>mriesch</u>: perhaps you distro is old, avoid the old i965 driver, and use iHD
   <br> in fact, avoid your distro, rebuild driver and VA yourself to keep control of it
   : 
   <br>