Thanks Tim. I tried byte-stream=true. Now the saved 264 stream can be played using ffmpeg. However, it seems that now ffdec_h264 in gstreamer cannot correctly decode the stream from x264enc when byte-stream is set to true. So my question now becomes how ffdec_h264 can correctly decodes the stream either from x264enc (when byte-stream=true) or from a 264 file encoded using libx264? Thanks, Zixia <div class="gmail_quote"> On Wed, Aug 11, 2010 at 12:57 PM, Tim-Philipp Müller <<a href="mailto:t.i.m@zen.co.uk">t.i.m@zen.co.uk</a>> wrote: <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"> <div class="im">On Wed, 2010-08-11 at 12:46 -0700, Zixia Huang wrote: > However when I try to save the encoded 264 stream into a file as: > > gst-launch camerasrc ! queue ! video/x-raw-yuv,format=\(fourcc > \)I420,width=1280,height=480 ! x264enc ! filesink locaton=tmp.264 > > And I try to play tmp.264 using ffplay, it seems that ffmpeg does not > know the format the encoded 264 stream. </div>If you are not embedding the h.264 stream into a container (which is preferable), you need to use ... ! x264enc byte-stream=true ! ... Cheers -Tim ------------------------------------------------------------------------------ This SF.net email is sponsored by Make an app they can't live without Enter the BlackBerry Developer Challenge <a href="http://p.sf.net/sfu/RIM-dev2dev" target="_blank">http://p.sf.net/sfu/RIM-dev2dev</a> _______________________________________________ gstreamer-devel mailing list <a href="mailto:gstreamer-devel@lists.sourceforge.net">gstreamer-devel@lists.sourceforge.net</a> <a href="https://lists.sourceforge.net/lists/listinfo/gstreamer-devel" target="_blank">https://lists.sourceforge.net/lists/listinfo/gstreamer-devel</a> </blockquote></div>