No AAC audio using Sony AVC (.mp4) SVP11.

[Dave Lozinski]

Have you tried just rendering the audio separately? Eg, “mute” all the video tracks?

IF so what happens?

If success, unmute the video tracks one by one and see if there’s any in particular causing the issue…

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https://www.davelozinski.com
https://www.davelozinski.com/DemoReel/
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[Hayden Roberts]

If I mute all the video tracks, I do not get an option to render to Sony AVC.

I have tried multiple video clips, all from different sources. I’ve used, videos from: Fraps, Samsung Galaxy S 1 & 2, iPhone 4 & 4S and my old Sony DVI tape video camera.

All have no audio even when choosing .mp4 and selecting “include audio”.

I am using SCP11 x64. Have tried uninstalling and reinstalling. No change. Seriously think it’s a bug in the Sony AVC. Apparently others can render and receive audio. Really annoys me I can’t.

Regards, Hayden.

[Dave Lozinski]

Sorry… I wanted you to render it as an audio file such as mp3 to see if it could be rendered.

You should also try just creating a blank video track. All black. And leave that on with the audio track. See if you can render that black video with audio.

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https://www.davelozinski.com
https://www.davelozinski.com/DemoReel/
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[Hayden Roberts]

[Dave Lozinski] “Sorry… I wanted you to render it as an audio file such as mp3 to see if it could be rendered.”

From what you’re asking, it seems to me that you think my source files are the culprit. Let me assure you, they are fine. I can render .mp3 and .ac3 with no problems at all. All the audio is there, just as it should be.

I have also tried the “empty video track” trick and all I get is a black video with no sound. The audio track is just not there.

As you can clearly see from my MediaInfo reports, Sony Vegas Pro is not creating any audio tracks, it’s not even trying to. It doesn’t spit out an error. It’s like I’m not even clicking the “include audio” option.

This has got to be a bug in Vegas. I have tried every single combination of settings, files and who know what else. It’s just not rendering ANY audio, ever.

[Dave Lozinski]

Hmmm… I doubt it’s a bug in Vegas or everyone would be experiencing the issue of not having any audio while rendering to that format.

Have you tried reinstalling Vegas from scratch?

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https://www.davelozinski.com
https://www.davelozinski.com/DemoReel/
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[Hayden Roberts]

[Dave Lozinski] “Have you tried reinstalling Vegas from scratch?”

Yes, I’ve tried this twice: uninstall, restart Windows, install.

I have read on this forum a user was having the same issue but changing the audio from 48,000 Hz to 44,100 Hz solved his issue. This doesn’t work for me, nothing does.

I think it’s worth nothing that this Vegas install was done on a brand new Windows 7 install, so there’s no conflicting programs or messed up registry settings. The first render settings I tried were Sony AVC because I wanted to test the GPU rendering. Been having this bug from the very beginning.

Maybe not many people try to render in Sony AVC + audio using .mp4? MainConcept AVC + audio (ACC) works perfectly but does not look as good bit for bit. I guess most/all people are happy with MainConcept. Either that or I am experiencing a 1 in a million bug.

[Bernd Porr]

I’m experiencing exactly the same problem with Sony’s AVC encoder. I’ve switched to MP4 and enabled audio but it’s not in the stream. Seems to be a bug in Vegas. Mainconcept’s encoder works fine. It’s pretty frustrating because the Sony encoder is two times faster than the Mainconcept encoder.
/Bernd

[Hayden Roberts]

[Bernd Porr] “I’m experiencing exactly the same problem with Sony’s AVC encoder. I’ve switched to MP4 and enabled audio but it’s not in the stream. Seems to be a bug in Vegas. Mainconcept’s encoder works fine. It’s pretty frustrating because the Sony encoder is two times faster than the Mainconcept encoder.
/Bernd”

Good to hear I’m not alone. I’m not too fussed about render times but the picture quality is much better using Sony AVC, especially at 1080p.

Is there a way to mux/join Sony AVC with a separate audio file such as mp3 or ac3 without having to re-render the whole file?

[Bob Bennett]

Could this be the same issue that I’m having with Sony Vegas Pro 11 (Build 425 – Win 7 64bit) and new 1080p files shot on the iPhone 4s? They seem to import OK into a fresh project … images are on the files in Project Media and drag to the timeline to the right length, and images even show up on the video track. But no video plays. Nor does audio … most of the time … although sometimes it will randomly play the audio.

[Bernd Porr]

Hi Hayden,
you should be able to merge MPEG4 and AAC with MP4Box. It’s a small command line tool which I usually use to make MP4 streamable for flash players. It does all different kinds of MPEG4 manipulations for you. I’ve never merged anything with it but it should work as long as the streams are MPEG4 compliant.
Here is a recipe how to merge audio and video (taken from https://www.bradchen.com/node/6):
MP4Box -raw
MP4Box -add ‘#video’ -add ‘#audio’ [Output Filename]
You get MP4Box here:
https://gpac.wp.institut-telecom.fr/mp4box/
/Bernd