[gst-devel] qtdemux could not get correct sample rate information from some .m4a file

[zhangfei gao]

hi,
   
  I test some m4a streams, qtdemux do not get correct sample rate information, do you encountert he same phenomenon.
   
  tool = iTunes v7.0.2.16, QuickTime 7.1.3
  input1 = WMA_v7_128kbps_44kHz_2.wma (Sampling Rate = 44kHz, BitRate= 128kbps, stereo)
  input2 = WMA_v9_1pCBR_192kbps_48kHz_2_NC.WMA (Sampling Rate = 48kHz, BitRate= 192kbps, stereo)
  configuration = BitRate 320kbps, SamplingRate 48kHz 
  output = *.m4a (Sampling Rate = 48kHz)
   
  qtdemux send caps info: both sample rate are 44100
  name: audio/mpeg
  audio/mpeg, mpegversion=(int)4, framed=(boolean)true, codec_data=(buffer)1190, rate=(int)44100, channels=(int)2
   
  Still I try other m4a files 
  sample rate = 11.025k ,22.05k 
  channel = 1
  but qtdemux output samplerate = 44100
   
  Since sample rate information is important to configure aac decoder, it may cause failure of aac decoding.
   
  Thanks
   
   

 		
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 Mp3疯狂搜-新歌热歌高速下   
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