Print shows that you don't have faad ( aac decoder plugin) . After installing libfaad2 , run configure in gst-plugins-bad then it gives some prints where it shows which are the pluings those are depending on library are built/not built. There what you see about faad ? Or you can try one more thing , gst-launch filesrc location=filename.m4a ! ffdec_aac ! audioconvert ! alsasink or gst-launch filesrc location=filename.m4a ! qtdemux ! ffdec_aac ! audioconvert ! alsasink <div class="gmail_quote">On Thu, Jul 22, 2010 at 9:00 AM, michael young <<a href="mailto:mcygogo@gmail.com">mcygogo@gmail.com</a>> wrote: <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"> HI sudarshan: check the attached file , and the file can play in Mplayer, so I think the file is ok. and i list the information below: <div class="im">$ gst-inspect-0.10 | grep aac </div>faac: faac: AAC audio encoder audioparsersbad: aacparse: AAC audio stream parser ffmpeg: ffdec_aac: FFmpeg Advanced Audio Coding decoder ffmpeg: ffenc_aac: FFmpeg Advanced Audio Coding encoder typefindfunctions: adts_mpeg_stream: aac <div><div></div><div class="h5"> On Thu, Jul 22, 2010 at 1:32 PM, sudarshan bisht <<a href="mailto:bisht.sudarshan@gmail.com">bisht.sudarshan@gmail.com</a>> wrote: > > Can you attach the AAC file which you are not able to play ? > > One more thing when you do "gst-inspect-0.10 | grep aac" what you get . > > > > > On Thu, Jul 22, 2010 at 10:34 AM, michael young <<a href="mailto:mcygogo@gmail.com">mcygogo@gmail.com</a>> wrote: >> >> Hi >> I try it like Sandeep said, first I install the libfaad-dev >> through Ubuntu's apt-get. >> then I reconfigure the gst-ffmpeg plugin, and installed it, but cannot >> play m4a file, >> the error message is just the old one. >> and then I installed the gst-plugin-bad, play the m4a file again >> , I got information >> like this: >> >> (gst-plugin-scanner:18537): GStreamer-WARNING **: Failed to load >> plugin '/usr/local/lib/gstreamer-0.10/libgstcamerabin.so': >> /usr/local/lib/gstreamer-0.10/libgstcamerabin.so: undefined symbol: >> gst_photography_get_focus_mode >> >> Do you know what's wrong here?? thx >> >> On Thu, Jul 22, 2010 at 11:19 AM, Sandeep Prakash <<a href="mailto:123sandy@gmail.com">123sandy@gmail.com</a>> >> wrote: >> > >> > Hi, >> > >> > >> > michael young wrote: >> >> >> >> and HOW I get and install an AAC decoder plugin?? thx. >> >> >> > >> > You can install "faad" plugin present in gst-plugins-bad package or the >> > "ffdec_aac" which is present >> > in gst-ffmpeg package. >> > >> > >> > Regards, >> > Sandeep Prakash >> > <a href="http://sandeepprakash.homeip.net" target="_blank">http://sandeepprakash.homeip.net</a> >> > -- >> > View this message in context: >> > <a href="http://gstreamer-devel.966125.n4.nabble.com/how-to-play-the-AAC-audio-by-Gstreamer-tp2296882p2298084.html" target="_blank">http://gstreamer-devel.966125.n4.nabble.com/how-to-play-the-AAC-audio-by-Gstreamer-tp2296882p2298084.html</a> >> > Sent from the GStreamer-devel mailing list archive at Nabble.com. >> > >> > >> > ------------------------------------------------------------------------------ >> > This SF.net email is sponsored by Sprint >> > What will you do first with EVO, the first 4G phone? >> > Visit <a href="http://sprint.com/first" target="_blank">sprint.com/first</a> -- <a href="http://p.sf.net/sfu/sprint-com-first" target="_blank">http://p.sf.net/sfu/sprint-com-first</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> >> > >> >> >> ------------------------------------------------------------------------------ >> This SF.net email is sponsored by Sprint >> What will you do first with EVO, the first 4G phone? >> Visit <a href="http://sprint.com/first" target="_blank">sprint.com/first</a> -- <a href="http://p.sf.net/sfu/sprint-com-first" target="_blank">http://p.sf.net/sfu/sprint-com-first</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> > > > > -- > Regards, > > Sudarshan Bisht > > ------------------------------------------------------------------------------ > This SF.net email is sponsored by Sprint > What will you do first with EVO, the first 4G phone? > Visit <a href="http://sprint.com/first" target="_blank">sprint.com/first</a> -- <a href="http://p.sf.net/sfu/sprint-com-first" target="_blank">http://p.sf.net/sfu/sprint-com-first</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> > > </div></div> ------------------------------------------------------------------------------ This SF.net email is sponsored by Sprint What will you do first with EVO, the first 4G phone? Visit <a href="http://sprint.com/first" target="_blank">sprint.com/first</a> -- <a href="http://p.sf.net/sfu/sprint-com-first" target="_blank">http://p.sf.net/sfu/sprint-com-first</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> -- Regards, Sudarshan Bisht