<br>Demuxer outputs raw aac data, it does not have any header(ADIF/ADTS) thats why you get that error message. <br><br>To get the correct playable file, you again need to mux this raw aac data using qtmux and then you get .m4a file. And to play this .m4a file you need to have qtdemux in your pipeline if you don't use decodebin2/playbin2.<br> <br>I hope this will help you. <br><br><br> <br><br><div class="gmail_quote">On Wed, Jul 20, 2011 at 1:52 PM, Ashwini Sharma <span dir="ltr"><<a href="mailto:ak.ashwini@gmail.com">ak.ashwini@gmail.com</a>></span> wrote:<br> <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"><div>Hi All,</div> <div> </div> <div>I have a demuxed audio stream (AAC encoded). When I try to play, i get an error "FFMpeg can not decode AAC data"</div> <div> </div> <div>The details are as follows:</div> <div> </div> <div>I have a video file which contain mpeg4 video and AAC audio. I Demux the file into Audio and video files. When i play the demuxed audio it fails.</div> <div> </div> <div>But when i reapeat the same test for AC3 or MP3 audios, it works fine.</div> <div> </div> <div> </div> <div>I think there is some mistake on my part when playing the AAC file. Someone please provide your inputs in getting it to play.</div> <div> </div> <div>Any help is greatly appreciated.</div> <div> </div><font color="#888888"> <div>-Ashwini<br></div> </font><br>_______________________________________________<br> gstreamer-devel mailing list<br> <a href="mailto:gstreamer-devel@lists.freedesktop.org">gstreamer-devel@lists.freedesktop.org</a><br> <a href="http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel" target="_blank">http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a><br> <br></blockquote></div><br><br clear="all"><br>-- <br>Regards,<br><br>Sudarshan Bisht<br>