Thanks

Audio track not muted. Mediainfo as follows: -

General
Complete name : D:\2012 B&D India\Renders\320x240 25fps\2012 B&D India.mp4
Format : MPEG-4
Format profile : Base Media / Version 2
Codec ID : mp42
File size : 43.9 MiB
Duration : 8mn 6s
Overall bit rate mode : Variable
Overall bit rate : 757 Kbps
Encoded date : UTC 2012-02-02 03:00:06
Tagged date : UTC 2012-02-02 03:00:06

Video
ID : 2
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Baseline@L1.3
Format settings, CABAC : No
Format settings, ReFrames : 2 frames
Format settings, GOP : M=1, N=25
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 8mn 6s
Bit rate mode : Variable
Bit rate : 751 Kbps
Maximum bit rate : 768 Kbps
Width : 320 pixels
Height : 240 pixels
Display aspect ratio : 4:3
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) : 0.391
Stream size : 43.5 MiB (99%)
Language : English
Encoded date : UTC 2012-02-02 03:00:06
Tagged date : UTC 2012-02-02 03:00:06

Audio
ID : 1
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 8mn 5s
Bit rate mode : Constant
Bit rate : 3 750 bps
Nominal bit rate : 128 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Compression mode : Lossy
Stream size : 222 KiB (0%)
Language : English
Encoded date : UTC 2012-02-02 03:00:06
Tagged date : UTC 2012-02-02 03:00:06

It looks like the audio is there. For comparison, here is the audio section of a file I recently created (albeit with another program):

Audio
ID: 2
Format: AAC
Format/Info: Advanced Audio Codec
Format profile: LC
Codec ID: 40
Duration: 42mn 18s
Duration_LastFrame: -21ms
Bit rate mode: Variable
Bit rate: 125 Kbps
Channel(s): 2 channels
Channel positions: Front: L R
Sampling rate: 48.0 KHz
Compression mode: Lossy
Stream size: 38.0 MiB (14%)
Language: English

What are you rendering this for, an iPod? Have you tried it on the device to see if the audio is really there, just that you can't hear it on the PC?

My PC player of choice is VLC, you could try using that to see if that makes a difference.

Other than that, I'm not sure what's going on.

Thanks for that.

What am I rendering for? The settings are specially for uploading to YouTube. But I prefer to see it work before uploading.

You’re right - the audio is there in the analysis.

But still no sound, despite 2 other players including VLC - 5 in all.

Also tried playing on my iPod, but again no audio.

Even converted the MP4 to a WMV. Once again no audio.

Also no audio when played on a new laptop.

I get audio in Windows Media Player when I render as follows: -
Format: Sony AVC mp4
Template: AVCHD 1440x1080 PAL
Description: -
Audio: 192 Kbps, 48,000 Hz, Stereo, AC-3 Studio.
Video: 15.0 Mbps, 25.000 fps, 1440x1080 wide
Use this setting to create a 1440x1080 PAL AVCHD file.

Do you anyone who might solve the mystery of no audio when rendered for YouTube as: -

Format: Sony AVC mp4
Template: YouTube normal quality 25fps
Description: -
Audio: 128 Kbps, 48,000 Hz, Stereo, AAC.
Video: 768 Kbps, 25.000 fps, 320x240
Use this setting to create a normal quality file, suitable for uploading to YouTube.

Asitis,
which Vegas Movie Studio version AND build (numbers) are you using?

I guess i have to ask the dumb question ... do you hear the audio when you preview in Vegas?

Even dumberer question ... do you hear the audio when you preview in Chicago? ;)

You may want to upload a small portion that is rendered. Readers of the forum can check it out on their systems to see if it your system or the clip.

Most common cause of missing MP4 audio with VMS is the wrong version of Quicktime.
You need QT 7.6.2 or earlier to work with VMS 9 Platinum and earlier.

Thanks for responses.

Vkmast: 9.0b build 92.
Chienworks: audio heard in preview.
Musicvid: using QT7.7.1(1680.42)
Markk655: followed your advice and rendered short loop-region for others to check, but got audio. So tried full re-render for 3rd time - and got audio again.

Product now good.
But mystery remains.

Many thanks for your attention
Cheers from Australia

;-D

Did you have the track muted when you rendered? I wonder....

That q already asked.

I see it now...

Vkmast: 9.0b build 92.

Read my post again, please.

I had the same issue-

Here's how I fixed it-

Go to OPTIONS/PREFERENCES/AUDIO DEVICE

Change to WIndows Classic Wave Mapper-- or another audio device than the one that didn't work

Make sure you check INCLUDE AUDIO in Custom Template before rendering (scroll down)

For more from me, please see
http://www.neilslade.com
and
http://www.neilslade.com/Papers/pole.html see list of camera pages at bottom