Hi Santakivi:<br> I have tried your method, <div>1: I run it like this:</div><div><font class="Apple-style-span" color="#000099">gst-launch </font><font class="Apple-style-span" color="#FF0000">videotestsrc num-buffers=200</font><font class="Apple-style-span" color="#000099"> ! video/x-raw-yuv,width=640,height=480,framerate=30/1 ! ffmpegcolorspace ! ffenc_mpeg4 ! mp4mux ! filesink location=record.mp4</font></div> <div>then, I can got a right MP4 file, and I can palyback it. But I record the video from my capture like this:<br><font class="Apple-style-span" color="#000099">gst-launch </font><font class="Apple-style-span" color="#FF0000">v4l2src num-buffers=200</font><font class="Apple-style-span" color="#000099"> ! video/x-raw-yuv,width=640,height=480,framerate=30/1 ! ffmpegcolorspace ! ffenc_mpeg4 ! mp4mux ! filesink location=record.mp4</font><br> I also got a file , But it cannot playback , I just get info like this:<br><div><font class="Apple-style-span" color="#FF0000">Playing record.mp4.</font></div><div><font class="Apple-style-span" color="#FF0000">libavformat file format detected.</font></div> <div><font class="Apple-style-span" color="#990000">[mpeg4 @ 0x9958c10]Error, header damaged or not MPEG4 header (f_code=0)</font></div><div><font class="Apple-style-span" color="#990000">[mpeg4 @ 0x9958c10]header damaged</font></div> <div><font class="Apple-style-span" color="#FF0000">[mov,mp4,m4a,3gp,3g2,mj2 @ 0x9957640]Could not find codec parameters (Video: mpeg4, yuv420p)</font></div><div><font class="Apple-style-span" color="#FF0000">LAVF_header: av_find_stream_info() failed</font></div> <div><font class="Apple-style-span" color="#FF0000">ISO: File Type Major Brand: ISO/IEC 14496-1 (MPEG-4 system) v2</font></div><div><font class="Apple-style-span" color="#FF0000">Quicktime/MOV file format detected.</font></div> <div><font class="Apple-style-span" color="#FF0000">[mov] Video stream found, -vid 0</font></div><div><font class="Apple-style-span" color="#FF0000">VIDEO: [mp4v] 640x480 24bpp inf fps 0.0 kbps ( 0.0 kbyte/s)</font></div> <div><font class="Apple-style-span" color="#FF0000">open: No such file or directory</font></div><div><font class="Apple-style-span" color="#FF0000">[MGA] Couldn't open: /dev/mga_vid</font></div><div><font class="Apple-style-span" color="#FF0000">open: No such file or directory</font></div> <div><font class="Apple-style-span" color="#FF0000">[MGA] Couldn't open: /dev/mga_vid</font></div><div><font class="Apple-style-span" color="#FF0000">[VO_TDFXFB] Can't open /dev/fb0: Permission denied.</font></div> <div><font class="Apple-style-span" color="#FF0000">[VO_3DFX] Unable to open /dev/3dfx.</font></div><div><font class="Apple-style-span" color="#FF0000">==========================================================================</font></div> <div><font class="Apple-style-span" color="#FF0000">Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family</font></div><div><font class="Apple-style-span" color="#FF0000">Selected video codec: [ffodivx] vfm: ffmpeg (FFmpeg MPEG-4)</font></div> <div><font class="Apple-style-span" color="#FF0000">==========================================================================</font></div><div><font class="Apple-style-span" color="#FF0000">Audio: no sound</font></div><div> <font class="Apple-style-span" color="#FF0000">Starting playback...</font></div><div><font class="Apple-style-span" color="#FF0000">VDec: vo config request - 640 x 480 (preferred colorspace: Planar YV12)</font></div><div> <font class="Apple-style-span" color="#FF0000">VDec: using Planar YV12 as output csp (no 0)</font></div><div><font class="Apple-style-span" color="#FF0000">Movie-Aspect is 1.33:1 - prescaling to correct movie aspect.</font></div> <div><font class="Apple-style-span" color="#FF0000">VO: [xv] 640x480 => 640x480 Planar YV12 </font></div><div><font class="Apple-style-span" color="#FF0000">V: 0.0 200/200 ??% ??% ??,?% 0 0 </font></div><div><font class="Apple-style-span" color="#FF0000"><br> </font></div><div><font class="Apple-style-span" color="#FF0000">Exiting... (End of file)</font></div></div><div><br></div><div>2: I run this:<br><div><font class="Apple-style-span" color="#3333FF">gst-launch v4l2src ! 'video/x-raw-yuv,format=(fourcc)I420,width=320,height=240,framerate=30/1' ! ffmpegcolorspace ! x264enc ! avimux ! filesink location=record.avi</font></div> <div>But I just got error like this:</div><div><font class="Apple-style-span" color="#FF0000">Setting pipeline to PAUSED ...</font></div><div><font class="Apple-style-span" color="#FF0000">ERROR: Pipeline doesn't want to pause.</font></div> <div><font class="Apple-style-span" color="#FF0000">ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Could not negotiate format</font></div><div><font class="Apple-style-span" color="#FF0000">Additional debug info:</font></div> <div><font class="Apple-style-span" color="#FF0000">gstbasesrc.c(2755): gst_base_src_start (): /GstPipeline:pipeline0/GstV4l2Src:v4l2src0:</font></div><div><font class="Apple-style-span" color="#FF0000">Check your filtered caps, if any</font></div> <div><font class="Apple-style-span" color="#FF0000">Setting pipeline to NULL ...</font></div><div><font class="Apple-style-span" color="#FF0000">Freeing pipeline ...</font></div></div><div>I don't know the <font class="Apple-style-span" color="#FF0000">fourcc</font> means what, then I modified it to this:<br> <span class="Apple-style-span" style="color: rgb(51, 51, 255); ">gst-launch v4l2src ! 'video/x-raw-yuv,format=I420,width=320,height=240,framerate=30/1' ! ffmpegcolorspace ! x264enc ! avimux ! filesink location=record.avi</span></div> <div>But I just got warning like this:<br><font class="Apple-style-span" color="#FF0000">WARNING: erroneous pipeline: could not link v4l2src0 to ffmpegcsp0</font></div><div>and <font class="Apple-style-span" color="#FF0000">cannot</font> record the video. And I replaced the format I420 to others just like YVU9 YV12 and</div> <meta http-equiv="content-type" content="text/html; charset=utf-8"><div> so on what I found by: <font class="Apple-style-span" color="#000099">gst-inspect v4l2src, </font>but there is <font class="Apple-style-span" color="#FF0000">no </font>one can work :(</div> <div><br></div><div><font class="Apple-style-span" color="#000099"></font><br><div class="gmail_quote">On Wed, Dec 22, 2010 at 8:31 PM, Santakivi Topi <span dir="ltr"><<a href="mailto:Topi.Santakivi@digia.com">Topi.Santakivi@digia.com</a>></span> wrote:<br> <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div class="im">On 12/22/2010 12:18 PM, michael wrote:<br> > Now I can record the video to a AVI file with mpeg4 encoding by :<br> > gst-launch v4l2src ! 'video/x-raw-yuv,width=320,height=240,<br> > framerate=30/1' ! ffmpegcolorspace ! ffenc_mpeg4! avimux! filesink<br> > location=record.avi<br> ><br> > But I got two issues:<br> > 1: I want record as a MP4 file, I do it like this:<br> > gst-launch v4l2src ! 'video/x-raw-yuv,width=320,height=240,<br> > framerate=30/1' ! ffmpegcolorspace ! ffenc_mpeg4 ! mp4mux! filesink<br> > location=record.avi<br> > I can record the video , but when I playback it by mplayer, I got a error:<br> > Playing ./record.mp4.<br> > libavformat file format detected.<br> > [mov,mp4,m4a,3gp,3g2,mj2 @ 0x8741640]moov atom not found<br> > LAVF_header: av_open_input_stream() failed<br> > ISO: File Type Major Brand: ISO/IEC 14496-1 (MPEG-4 system) v2<br> <br> </div>When recording, with the above gst-launch line, do you stop<br> the pipeline with Ctrl+C..?<br> <br> It could be that the file container doesn't get fully written<br> in case of such an interrupt and that's why the clip doesn't play.<br> <br> For example, if you use this pipeline and<br> stop it with Ctrl+C, the clip doesn't play:<br> <br> gst-launch-0.10 videotestsrc !<br> <div class="im">'video/x-raw-yuv,width=320,height=240,framerate=30/1' ! ffmpegcolorspace<br> </div>! ffenc_mpeg4 ! mp4mux ! filesink location=test.mp4<br> <br> But this pipeline produces a valid video file:<br> <br> gst-launch-0.10 videotestsrc num-buffers=200 !<br> <div class="im">'video/x-raw-yuv,width=320,height=240,framerate=30/1' ! ffmpegcolorspace<br> </div>! ffenc_mpeg4 ! mp4mux ! filesink location=test.mp4<br> <div class="im"><br> ><br> > 2: I want encode the video to H264, so I do like this:<br> > gst-launch v4l2src ! 'video/x-raw-yuv,width=320,height=240,<br> > framerate=30/1' ! ffmpegcolorspace ! x264enc! avimux ! filesink<br> > location=record.avi<br> <br> </div>How about adding the format to the caps, e.g .<br> v4l2src ! 'video/x-raw-yuv,format=(fourcc)I420,width=320,height=240,<br> framerate=30/1' ! fmpegcolorspace ! x264enc! avimux ! filesink<br> location=record.avi ?<br> <br> BR,<br> Topi<br> <div class="im"><br> > But when I run the pipeline I just get the error info like this:<br> > Setting pipeline to PAUSED ...<br> > Pipeline is live and does not need PREROLL ...<br> > Setting pipeline to PLAYING ...<br> > New clock: GstSystemClock<br> > ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Internal<br> > data flow error.<br> > Additional debug info:<br> > gstbasesrc.c(2550): gst_base_src_loop ():<br> > /GstPipeline:pipeline0/GstV4l2Src:v4l2src0:<br> > streaming task paused, reason not-negotiated (-4)<br> > Execution ended after 1727716724 ns.<br> > Setting pipeline to PAUSED ...<br> > Setting pipeline to READY ...<br> > Setting pipeline to NULL ...<br> > Freeing pipeline ...<br> ><br> > Some one can help me fix the issues? Tks :)<br> ><br> ><br> > On 12/22/10, Timothy Braun <<a href="mailto:braunsquared@gmail.com">braunsquared@gmail.com</a><br> </div><div class="im">> <mailto:<a href="mailto:braunsquared@gmail.com">braunsquared@gmail.com</a>>> wrote:<br> > > H264 is encoded with x264enc element.<br> > ><br> > > Sent from my iPhone<br> > ><br> > > On Dec 22, 2010, at 3:10 AM, wl2776 <<a href="mailto:wl2776@gmail.com">wl2776@gmail.com</a><br> </div><div class="im">> <mailto:<a href="mailto:wl2776@gmail.com">wl2776@gmail.com</a>>> wrote:<br> > ><br> > >><br> > >><br> > >> michael young wrote:<br> > >>><br> > >>> And now , I want to record the video to a MP4 file with the h264<br> > encoding<br> > >>> format , How can I do ?<br> > >>><br> > >>> On Wed, Dec 22, 2010 at 2:26 PM, michael <<a href="mailto:mcygogo@gmail.com">mcygogo@gmail.com</a><br> </div><div class="im">> <mailto:<a href="mailto:mcygogo@gmail.com">mcygogo@gmail.com</a>>> wrote:<br> > >>><br> > >>>> tks, this is work: gst-launch v4l2src device=/dev/video0 !<br> > >>>> 'video/x-raw-yuv,width=640,height=480,framerate=30/1' ! xvimagesink<br> > >>><br> > >>><br> > >><br> > >> Looks like you can't, because h264 encoder is unavailable.<br> > >> gst-inspect | grep h264<br> > >> doesn't show it.<br> > >> However, general idea is to encode, then mux, and then save to a file.<br> > >> gst-launch v4l2src device=/dev/video0 !<br> > >> 'video/x-raw-yuv,width=640,height=480,framerate=30/1' ! ffenc_mpeg4 !<br> > >> mp4mux !filesink location=/home/user/file.<br> > >><br> > >> --<br> > >> View this message in context:<br> > >><br> > <a href="http://gstreamer-devel.966125.n4.nabble.com/how-to-create-a-pipeline-to-record-video-from-camera-tp3134399p3160261.html" target="_blank">http://gstreamer-devel.966125.n4.nabble.com/how-to-create-a-pipeline-to-record-video-from-camera-tp3134399p3160261.html</a><br> > >> Sent from the GStreamer-devel mailing list archive at Nabble.com.<br> > >><br> > >><br> > ------------------------------------------------------------------------------<br> > >> Forrester recently released a report on the Return on Investment<br> > (ROI) of<br> > >> Google Apps. They found a 300% ROI, 38%-56% cost savings, and break-even<br> > >> within 7 months. Over 3 million businesses have gone Google with Google<br> > >> Apps:<br> > >> an online email calendar, and document program that's accessible<br> > from your<br> > >><br> > >> browser. Read the Forrester report: <a href="http://p.sf.net/sfu/googleapps-sfnew" target="_blank">http://p.sf.net/sfu/googleapps-sfnew</a><br> > >> _______________________________________________<br> > >> gstreamer-devel mailing list<br> > >> <a href="mailto:gstreamer-devel@lists.sourceforge.net">gstreamer-devel@lists.sourceforge.net</a><br> </div>> <mailto:<a href="mailto:gstreamer-devel@lists.sourceforge.net">gstreamer-devel@lists.sourceforge.net</a>><br> <div class="im">> >> <a href="https://lists.sourceforge.net/lists/listinfo/gstreamer-devel" target="_blank">https://lists.sourceforge.net/lists/listinfo/gstreamer-devel</a><br> > ><br> > ><br> > ------------------------------------------------------------------------------<br> > > Forrester recently released a report on the Return on Investment (ROI) of<br> > > Google Apps. They found a 300% ROI, 38%-56% cost savings, and break-even<br> > > within 7 months. Over 3 million businesses have gone Google with Google<br> > > Apps:<br> > > an online email calendar, and document program that's accessible from<br> > your<br> > > browser. Read the Forrester report: <a href="http://p.sf.net/sfu/googleapps-sfnew" target="_blank">http://p.sf.net/sfu/googleapps-sfnew</a><br> > > _______________________________________________<br> > > gstreamer-devel mailing list<br> > > <a href="mailto:gstreamer-devel@lists.sourceforge.net">gstreamer-devel@lists.sourceforge.net</a><br> </div>> <mailto:<a href="mailto:gstreamer-devel@lists.sourceforge.net">gstreamer-devel@lists.sourceforge.net</a>><br> <div><div></div><div class="h5">> > <a href="https://lists.sourceforge.net/lists/listinfo/gstreamer-devel" target="_blank">https://lists.sourceforge.net/lists/listinfo/gstreamer-devel</a><br> > ><br> </div></div></blockquote></div><br></div>