No audio importing AAC LC

sanjosedave wrote on 3/26/2013, 4:10 PM

I'm importing MP4 container files shot using my Android Motorola Droid 4 phone into Vegas 11 Pro and I'm not getting any audio. Mediainfo shows AAC at 128kbps, 41.1KHz, 2 channels AAC (LC). ffdshow shows using libfaad2 codec for AAC. Audio plays fine with VLC. I have Quicktime 7.7.3 install (not sure if that's relevant). I notice that when I drag the clip from Project Media into the timeline it doesn't split into 2 tracks (one video and one audio). Not getting any activity on the Mixer master that I can see.

Thanks,
Dave

Comments

musicvid10 wrote on 3/26/2013, 9:59 PM

Try rolling back your Quicktime.
7.6 is considered pretty bulletproof with all versions of Vegas.

sanjosedave wrote on 3/27/2013, 6:49 PM

Rolled back Quicktime to 7.6 (1292) and now when I start Vegas (after the Welcome pop-up) I get the following error message:

"The playback device Microsoft Sound Mapper does not exist."

Did some research on that and the only thing I could find was under Options > Preferences > Audio Device - changed from "Microsoft Sound Mapper" to "Windows Classic Wave Drive". But that also results in an error:

"The playback device Speakers (Conexant 20672 SmartA does not exist."

Suggestions?

Dave

musicvid10 wrote on 3/27/2013, 8:44 PM

All I can suggest is reinstall your audio hardware drivers.
Quicktime won't affect how Vegas sees audio hardware devices (it is only software libraries), but you "may" need to reinstall Vegas as well. Sorry this happened to you following my suggestion.

sanjosedave wrote on 3/28/2013, 5:49 PM

Okay. Got my audio hardware drivers back working again and am no longer getting that error message.

But I'm still not getting any audio on those imported files so I'm back to my original problem except now I'm on Quicktime 7.6.

Any ideas what to try next?

Thanks,
Dave

musicvid10 wrote on 3/28/2013, 10:54 PM

Pasting the full MediaInfo properties might give some clues.
Also uploading a short camera clip somewhere (not Youtube!) would give others a chance to see if they can duplicate the issue on their systems.

sanjosedave wrote on 4/1/2013, 12:04 PM

Here is the link to a clip:

https://docs.google.com/file/d/0B4JSw118vhs6ZDNwLU9tTjg3UE0/edit?usp=sharing

Here is the full mediainfo output:

General
Complete name : C:\Users\dturk\Videos\032413\2013-03-24_11-08-30_595.mp4
Format : MPEG-4
Format profile : Base Media
Codec ID : isom
File size : 139 MiB
Duration : 1mn 17s
Overall bit rate : 15.2 Mbps

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings, CABAC : Yes
Format settings, ReFrames : 1 frame
Format settings, GOP : M=1, N=30
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 1mn 16s
Bit rate : 15.0 Mbps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Variable
Frame rate : 30.000 fps
Minimum frame rate : 15.003 fps
Maximum frame rate : 30.040 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.241
Stream size : 138 MiB (99%)
Title : VideoHandle
Language : English
Encoded date : UTC 2013-03-24 18:10:18
Tagged date : UTC 2013-03-24 18:10:18
mdhd_Duration : 76981

Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 1mn 17s
Source duration : 1mn 17s
Bit rate mode : Constant
Bit rate : 128 Kbps
Nominal bit rate : 96.0 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 44.1 KHz
Compression mode : Lossy
Stream size : 1.18 MiB (1%)
Source stream size : 1.18 MiB (1%)
Title : SoundHandle
Language : English
Encoded date : UTC 2013-03-24 18:10:18
Tagged date : UTC 2013-03-24 18:10:18
mdhd_Duration : 77100

musicvid10 wrote on 4/1/2013, 2:50 PM

There is nothing about the file properties to suggest why the audio wouldn't open for you. Indeed, it opens just fine in my Vegas 8.0c with QT 7.6. Audio is present and in sync.

You might try running the file through AVIDemux. A last resort would be to convert it to something else. I hope you haven't inadvertantly installed any codec "packs" on your machine?

sanjosedave wrote on 4/2/2013, 10:23 AM

I have not installed any codec packs that I'm aware of. I don't know what AVIDemux is but I'll research that and try it. I'm wondering if uninstalling and reinstalling Vegas might be a reasonable option at this point...

musicvid10 wrote on 4/2/2013, 10:38 AM

It's worth a try.
Best.