<div class=MsoNormal><FONT face=Arial size=1><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial"><?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p>hi,</o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face=Arial size=1><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial"><o:p></o:p></SPAN></FONT> </div> <div class=MsoNormal><FONT face=Arial size=1><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial"><o:p>I test some m4a streams, qtdemux do not get correct sample rate information, do you encountert he same phenomenon.</o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face=Arial size=1><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face=Arial size=1><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial">tool = iTunes v7.0.2.16, QuickTime 7.1.3<o:p></o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face=Arial size=1><SPAN
lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial">input1 = WMA_v7_128kbps_44kHz_2.wma<FONT color=navy><SPAN style="COLOR: navy"> (Sampling Rate = 44kHz, BitRate= 128kbps, stereo)</SPAN></FONT><o:p></o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face=Arial size=1><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial">input2 = WMA_v9_1pCBR_192kbps_48kHz_2_NC.WMA<FONT color=navy><SPAN style="COLOR: navy"> (Sampling Rate = 48kHz, BitRate= 192kbps, stereo)</SPAN></FONT><o:p></o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face=Arial size=1><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial">configuration = <STRONG>BitRate 320kbps, SamplingRate 48kHz <o:p></o:p></STRONG></SPAN></FONT></div> <div class=MsoNormal><FONT face=Arial size=1><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial">output = *.m4a <FONT color=#000080>(Sampling Rate = 48kHz)<o:p></o:p></FONT></SPAN></FONT></div> <div class=MsoNormal><FONT face=Arial size=1><SPAN
lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face=Arial size=1><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial">qtdemux send caps info: both sample rate are 44100<o:p></o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face=Arial size=1><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial">name: audio/mpeg<o:p></o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face=Arial size=1><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial">audio/mpeg, mpegversion=(int)4, framed=(boolean)true, codec_data=(buffer)1190, rate=(int)<STRONG>44100</STRONG>, channels=(int)2<o:p></o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face=Arial size=1><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face=Arial size=1><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial">Still I try other m4a files
<o:p></o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face=Arial size=1><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial">sample rate = 11.025k ,22.05k <o:p></o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face=Arial size=1><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial">channel = 1<o:p></o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face=Arial size=1><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial">but qtdemux output samplerate = <STRONG>44100</STRONG></SPAN></FONT></div> <div class=MsoNormal><FONT face=Arial size=1><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial"></SPAN></FONT> </div> <div class=MsoNormal><FONT face=Arial size=1><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial">Since sample rate information is important to configure aac decoder, it may cause failure of aac decoding.</SPAN></FONT></div> <div class=MsoNormal><FONT face=Arial size=1><SPAN lang=EN-US style="FONT-SIZE: 9pt;
FONT-FAMILY: Arial"></SPAN></FONT> </div> <div class=MsoNormal><FONT face=Arial size=1><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial">Thanks</SPAN></FONT></div> <div class=MsoNormal><FONT face=Arial size=1><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial"></SPAN></FONT> </div> <div class=MsoNormal><FONT face=Arial size=1><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial"><o:p></o:p></SPAN></FONT> </div><p> 
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