<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <meta name="Generator" content="Microsoft Word 14 (filtered medium)"> <style></style> </head> <body lang="DA" link="blue" vlink="purple"> <div class="WordSection1"> Ok! It works now! <o:p></o:p> Thanks a lot!<o:p></o:p> <o:p> </o:p> Claire<o:p></o:p> <o:p> </o:p> <o:p> </o:p> From: gstreamer-devel [mailto:gstreamer-devel-bounces@lists.freedesktop.org] On Behalf Of Peter Maersk-Moller Sent: Monday, August 15, 2016 3:16 PM To: Discussion of the development of and with GStreamer Subject: Re: error "no element "video"" when input is yuv<o:p></o:p> <o:p> </o:p> <div> <div> <div> <div> The x264enc does not output a container format such as mp4. Hence you can not save x264enc as mp4 without a muxer such as mp4mux.<o:p></o:p> </div> You need to get all your caps right. This works. Adapt it to your resolution. gst-launch-1.0 -v filesrc blocksize=115200 location=myfile.yuv do-timestamp=true ! 'video/x-raw,format=I420,width=320,height=240,framerate=25/1,pixel-aspect-ratio=1/1,interlace-mode=progressive' ! x264enc ! avimux ! filesink location=myfile.avi<o:p></o:p> </div> You can omit the do-timestamp=true as these are actually not the right timestamps, but you will get complaints about a critical error altrhough it still works.<o:p></o:p> </div> P<o:p></o:p> </div> <div> <o:p> </o:p> <div> On Mon, Aug 15, 2016 at 2:37 PM, Claire Mantel <<a href="mailto:clma@fotonik.dtu.dk" target="_blank">clma@fotonik.dtu.dk</a>> wrote:<o:p></o:p> <div> <div> Hi Peter,<o:p></o:p> Ah ok oups, sorry I thought that video/x-h264 was the encoder…<o:p></o:p> <o:p></o:p> So.. now I’ve tried the command line<o:p></o:p> gst-launch-1.0 filesrc location=/mnt/sdcard/testGSTPipelines/IRSeq_BUTIV_Davis1A_420_short.yuv ! \<o:p></o:p> video/x-raw,format=I420,width=640,height=512,framerate=25/1 \<o:p></o:p> ! x264enc ! filesink location=test.mp4<o:p></o:p> <o:p></o:p> (I don’t care about the settings of the encoder for now just would like to get the pipeline running)<o:p></o:p> <o:p></o:p> And now I get the error<o:p></o:p> <o:p></o:p> ERROR: from element /GstPipeline:pipeline0/GstFileSrc:filesrc0: Internal data flow error.<o:p></o:p> Additional debug info:<o:p></o:p> gstbasesrc.c(2865): gst_base_src_loop (): /GstPipeline:pipeline0/GstFileSrc:filesrc0:<o:p></o:p> streaming task paused, reason error (-5)<o:p></o:p> ERROR: pipeline doesn't want to preroll.<o:p></o:p> <o:p></o:p> I get the same error if I try from an avi file (gst-launch-1.0 filesrc location=/mnt/sdcard/testGSTPipelines/IRSeq_BUTIV_Davis1A_420_short.avi ! \<o:p></o:p> x264enc ! filesink location=test.mp4)<o:p></o:p> <o:p></o:p> I tried adding avimux and setting the output to avi but tthat doesn’t change anything.<o:p></o:p> <o:p></o:p> Sorry for being such a newbie… <o:p></o:p> <o:p></o:p> <o:p></o:p> From: gstreamer-devel [mailto:<a href="mailto:gstreamer-devel-bounces@lists.freedesktop.org" target="_blank">gstreamer-devel-bounces@lists.freedesktop.org</a>] On Behalf Of Peter Maersk-Moller Sent: Monday, August 15, 2016 12:20 PM To: Discussion of the development of and with GStreamer Subject: Re: error "no element "video"" when input is yuv<o:p></o:p> <o:p></o:p> <div> Hi Claire.<o:p></o:p> <div> <div> <div> <o:p></o:p> <div> On Mon, Aug 15, 2016 at 10:24 AM, Claire Mantel <<a href="mailto:clma@fotonik.dtu.dk" target="_blank">clma@fotonik.dtu.dk</a>> wrote:<o:p></o:p> <div> <div> Hey Alan,<o:p></o:p> Thanks for answering. <o:p></o:p> My aim is to encode the video yes.<o:p></o:p> Based on your answer I tried the following command line:<o:p></o:p> gst-launch-1.0 filesrc location=/mnt/sdcard/testGSTPipelines/IRSeq_BUTIV_Davis1A_420_short.yuv blocksize=491520 ! \<o:p></o:p> video/x-raw,format=i420,width=640,height=512,framerate=25/1 \<o:p></o:p> ! video/x-h264 ! avimux ! queue ! filesink location=test.avi<o:p></o:p> </div> </div> <div> <o:p></o:p> </div> <div> The element 'video/x-raw,format=i420,width=640,height=512,framerate=25/1' and the element 'video/x-h264' are cap specifications or cap filters. They DO NOT change/encode/decode any data at all. You don't get encoded H.264 video by declaring that it is by some magical and mysterious way. You need to add an encoder element. Such element could be the x264enc element. <o:p></o:p> </div> <blockquote style="border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt"> <div> <div> <o:p></o:p> But I still get the same error.<o:p></o:p> I don’t get the first answer (“video/x-raw and video/x-h264 are incompatible”) as x264 is a video encoder…<o:p></o:p> </div> </div> </blockquote> <div> <o:p></o:p> </div> <div> No, you are mistaken. x264 is an encoder project which code GStreamer has used to based their H.264 encoder, the x264enc element, on. You have not included any encoder element at all in your pipeline. I'd suggest you include one.<o:p></o:p> </div> <div> Best Peter<o:p></o:p> </div> </div> </div> </div> </div> </div> </div> </div> _______________________________________________ gstreamer-devel mailing list <a href="mailto:gstreamer-devel@lists.freedesktop.org">gstreamer-devel@lists.freedesktop.org</a> <a href="https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel" target="_blank">https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a><o:p></o:p> </div> <o:p> </o:p> </div> </div> </body> </html>