MP4 - no audio playing

[SiennaStark]

Hi everyone, signed up just to make this post. It's a mystery to me.

I use software called ManyCam to live stream my webcam, and record videos. This has worked fine for more than a year.

Last week I did my usual, then went to edit the video captured to find it showed audio wave things, but no audio would play. I tried Quicktime, WMP, audacity and VLC.

I tried converting the file to various other types, that seems to wipe all traces of the audio. Can anyone help me?

from mediainfo:
Complete name : C:\Users\Sienna\Videos\ManyCam\My Recording_5.mp4
Format : MPEG-4
Format profile : Base Media / Version 2
Codec ID : mp42
File size : 336 MiB
Duration : 16mn 30s
Overall bit rate mode : Constant
Overall bit rate : 2 847 Kbps
Encoded date : UTC 2015-07-30 20:32:10
Tagged date : UTC 2015-07-30 20:32:10

[Baldrick]

Post the complete log from mediainfo, view->text and copy everything.

So you see "audio wave things" in audacity? BUt still silence? Checked all your computer sound settings?

[SiennaStark]

My friend tried it in audacity, said there was no audio. It's a video I was editing using windows movie maker. That's where I saw the wave things (I'm sorry, I've no idea what they're called)

All other audio on my PC works fine. What settings am I checking exactly?


General
Complete name : C:\Users\Sienna\Videos\ManyCam\My Recording_5.mp4
Format : MPEG-4
Format profile : Base Media / Version 2
Codec ID : mp42
File size : 336 MiB
Duration : 16mn 30s
Overall bit rate mode : Constant
Overall bit rate : 2 847 Kbps
Encoded date : UTC 2015-07-30 20:32:10
Tagged date : UTC 2015-07-30 20:32:10

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L3.1
Format settings, CABAC : Yes
Format settings, ReFrames : 2 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 16mn 30s
Source duration : 16mn 30s
Bit rate mode : Constant
Bit rate : 2 838 Kbps
Nominal bit rate : 3 000 Kbps
Width : 800 pixels
Height : 600 pixels
Display aspect ratio : 4:3
Frame rate mode : Variable
Frame rate : 28.384 fps
Original frame rate : 30.000 fps
Minimum frame rate : 11.099 fps
Maximum frame rate : 909.091 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.208
Stream size : 335 MiB (100%)
Source stream size : 335 MiB (100%)
Encoded date : UTC 2015-07-30 20:32:10
Tagged date : UTC 2015-07-30 20:32:10
mdhd_Duration : 990355

Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 16mn 30s
Source duration : 16mn 30s
Bit rate mode : Constant
Bit rate : 2 067 bps
Nominal bit rate : 128 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 44.1 KHz
Compression mode : Lossy
Stream size : 250 KiB (0%)
Source stream size : 250 KiB (0%)
Encoded date : UTC 2015-07-30 20:32:10
Tagged date : UTC 2015-07-30 20:32:10
mdhd_Duration : 990285

[Detmek]

250KB for 16 minuts audio? Its like you recoded silence.