<div dir="auto"><div><br><div class="gmail_extra"><br><div class="gmail_quote">Le 22 déc. 2017 4:40 AM, "pangit_ako" <<a href="mailto:hamburgerstephen@gmail.com">hamburgerstephen@gmail.com</a>> a écrit :<br type="attribution"><blockquote class="quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Greetings,<br>
<br>
I am new to GStreamer...please excuse my ignorance...I am trying to learn<br>
this as quickly as I am able. I have the program(s) installed (Windows<br>
Vista) and have fired up the command line. I type the following 'test'<br>
pipeline...and it works just fine:<br>
<br>
gst-launch-1.0.exe videotestsrc ! autovideosink<br>
<br>
This also works fine when I change the properties to 'snow', 'ball',<br>
'red'...etc...<br>
<br>
However when I attempt to use my webcam (by using 'autovideosrc'), I get<br>
an error of which I'm not exactly sure to what it is referring...here is the<br>
command followed by the output generated from GStreamer:<br>
<br>
gst-launch-1.0 autovideosrc ! video/x-raw,width=640,height=<wbr>480 ! jpegenc !<br>
rtpjpegpay ! udpsink host=127.0.0.1 port=5200<br></blockquote></div></div></div><div dir="auto"><br></div><div dir="auto">The type for jpeg is image/jpeg,... The little oops is that you pass video/x-raw, that results in not-negotiated error.</div><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto"><div class="gmail_extra"><div class="gmail_quote"><blockquote class="quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
"setting pipeline to PAUSED...<br>
"pipeline is live and does not need PREROLL...<br>
ERROR from element<br>
/GstPipeline:pipeline0/<wbr>GstAutoVideoSrc:autovideosrc0/<wbr>GstKsVideoSrc:autovideosrc0-<wbr>actual-src-ksvide:<br>
internal data stream error.<br>
Additional debug info:<br>
gstbasesrc.c(2939):<br>
gst-base-src-loop():/<wbr>GstPipeline:pipeline0/<wbr>GstAutoVideoSrc:autovideosrc0/<wbr>GstKsVideoSrc:autovideosrc0-<wbr>actual-video-src-ksvide:<br>
streaming stoppped, reason not-negotiated (-4)<br>
ERROR: pipeline doesn't want to preroll...<br>
Setting pipeline to PAUSED...<br>
Setting pipeline to READY...<br>
Setting pipleine to NULL...<br>
Freeing pipeline..."<br>
<br>
My system is an Acer TM 5720 laptop...Windows Vista OS...I know my built-in<br>
webcam (Acer Crystal Eye) is functioning...because it seems to work without<br>
any problems in other applications...so it is not the webcam or a driver<br>
issue. I seem to see this same error message no matter what I use as a<br>
'src' element...? It is possible this is an OS problem (perhaps MS Vista is<br>
not supported)...???<br>
<br>
Any insight about what the problem might be would be greatly<br>
appreciated...again remember I'm new to GStreamer so I apologize in advance.<br>
Regards.<br>
<br>
<br>
<br>
<br>
<br>
--<br>
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</blockquote></div><br></div></div></div>