I've met some aac clips play issue which played well on gst0.10. (I will attach one sample clip)
And I checked the aacparse plugin and found that in gstaacparse.c gst_aac_parse_detect_stream() it add checkiing channel and frameisze validation:

if (! channels || framesize) {
      GST_DEBUG_OBJECT (aacparse, "impossible ADTS configuration");
    g_print("++ gstaacpase.c Line:%d, channels = %d, return false ++\n", __LINE__, channels);
      return FALSE;
    }

The checking doesn't exist in gst0.10 aacparse.
I just wondering if the channels need to be checked or is it a critical error which return the GST_ERROR and make the clip fail to play.
Because the channel config area read from adts header may not exactly reflect the audio data channel number, and it is not a necessary input for AAC decoder (the actual audio channel number should be the output of the aac audio decoder by counting the single_channnel_element or pair_channel_element in the audio stream)

Would you give us some advice about this? Thanks.