No AAC audio in Premiere CC 2014.1? [bug - resolved]

Question

--- Original post for reference
I just updated to Premiere CC 2014.1 today.
I have a set of files that I regularly convert with Handbrake into MP4s with an AAC audio stream. I have had no problems at all with CS6, CC, and CC 2014. But now with CC 2014.1, I get no audio when I import the mp4 files.
The Project window says it is a "Video" file, not a "Movie" file. The associated icon in the Project window is also missing the waveform on it.
When I drag it onto the timeline, only the video track appears, as you'd expect. The video alone appears to play back correctly.
Restarting PP CC 2014.1 did not do anything.
I loaded up PP CS6 and imported the exact same MP4 file and it works as expected. Windows Media Player has no problem playing the video file with audio either.
What changed between CC 2014 and CC 2014.1 that could have caused this?
This is what MediaInfo reports for the file:
General
Complete name                            : D:\temp\Test-MP4.mp4
Format                                   : MPEG-4
Format profile                           : Base Media / Version 2
Codec ID                                 : mp42
File size                                : 45.6 MiB
Duration                                 : 4mn 46s
Overall bit rate mode                    : Variable
Overall bit rate                         : 1 334 Kbps
Encoded date                             : UTC 2014-10-07 06:48:03
Tagged date                              : UTC 2014-10-07 07:18:53
Writing application                      : HandBrake 0.9.9 2013052900
Video
ID                                       : 1
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format profile                           : [email protected]
Format settings, CABAC                   : Yes
Format settings, ReFrames                : 4 frames
Codec ID                                 : avc1
Codec ID/Info                            : Advanced Video Coding
Duration                                 : 4mn 46s
Bit rate                                 : 1 200 Kbps
Width                                    : 1 024 pixels
Height                                   : 576 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Constant
Frame rate                               : 25.000 fps
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : Progressive
Bits/(Pixel*Frame)                       : 0.081
Stream size                              : 41.1 MiB (90%)
Writing library                          : x264 core 130 r2273 b3065e6
Encoding settings                        : cabac=1 / ref=1 / deblock=1:0:0 / analyse=0x1:0x111 / me=hex / subme=2 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=0 / me_range=16 / chroma_me=1 / trellis=0 / 8x8dct=0 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=0 / threads=18 / lookahead_threads=4 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=1 / weightb=1 / open_gop=0 / weightp=1 / keyint=250 / keyint_min=25 / scenecut=40 / intra_refresh=0 / rc_lookahead=10 / rc=abr / mbtree=1 / bitrate=1200 / ratetol=1.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / vbv_maxrate=20000 / vbv_bufsize=25000 / nal_hrd=none / ip_ratio=1.40 / aq=1:1.00
Encoded date                             : UTC 2014-10-07 06:48:03
Tagged date                              : UTC 2014-10-07 06:48:32
Color primaries                          : BT.601 NTSC
Transfer characteristics                 : BT.709
Matrix coefficients                      : BT.601
Audio
ID                                       : 2
Format                                   : AAC
Format/Info                              : Advanced Audio Codec
Format profile                           : LC
Codec ID                                 : 40
Duration                                 : 4mn 46s
Bit rate mode                            : Variable
Bit rate                                 : 126 Kbps
Maximum bit rate                         : 164 Kbps
Channel(s)                               : 1 channel
Channel positions                        : Front: C
Sampling rate                            : 44.1 KHz
Compression mode                         : Lossy
Stream size                              : 4.31 MiB (9%)
Encoded date                             : UTC 2014-10-07 06:48:03
Tagged date                              : UTC 2014-10-07 06:48:31
Thanks!
Message was edited by: Kevin Monahan
Reason: there is no Premiere Pro CC 2014.2, you probably mean 2014.1. If not, please PM me.

Answer 1

Hi wired.au,
Thanks for this solution.
wired.au wrote:
OK ... after I finished my post below about how PP CC 2014.1 would not recognize the mono AAC audio track from my MP4s, I decided to produce the same MP4 again with Handbrake, with a stereo audio track instead.
It worked. After loading the stereo MP4, I reimported the original mono MP4 that didn't work (without restarting premiere or anything) and the mono audio is now recognized. Looks like there was a strange bug with Premiere Pro CC 2014.1 and mono AAC audio tracks, which got resolved after importing an MP4 with a stereo AAC track for the first time.
I thought I should leave this here just in case anyone else encounters the same thing.
Thanks,
Kevin