Render as AC3 file is bad at DVinfo.net

Mark Kossin · December 28th, 2011, 05:25 PM

So I just finished a major project for my parents. I made DVD's of all their camcorder tapes, 30 tapes spanning 35 years. Everything was going well until Vegas started outputting garbage AC3 files. I am using Vegas 11 64bit (Build 511). The AC3 render process runs and completes as normal, DVDA will even open it and builds peaks for it. However the audio is junk, it is 2 relatively straight lines and just a humming noise. There is no consistency to the problem, sometimes Vegas will render a good file the first time other times it will take 5 or 6 attempts. I have uninstalled and re-installed Vegas but the problem remains. Any help would be appreciated.

Jeremiah Rickert · January 3rd, 2012, 04:21 AM

Which AC3 template are you using?

Have you tried exporting as a different format (like .wav) ?

Will DVDA transcode all audio into AC3? Or does it make you start with an AC3 file to be totally compliant?

Mark Kossin · January 4th, 2012, 02:05 PM

I have tried all AC3 options, AC3 studio and pro. All have the issue, I use AC3 because DVDA uses it natively without the need to re-encode. I will try other audio formats to see if they have the same problem.

Don Bloom · January 4th, 2012, 03:06 PM

Don't know what might be causing the problem but if you give DVDA a wav (PCM) file it will simply render it to AC3 without detriment to the file. Then before you birn it check it in DVDA to make sure it's OK.

Mark Kossin · January 4th, 2012, 10:52 PM

So I tried other audio formats tonight MP3 and Wav, both had no issues. I decided to try AC3 again and was able to do 6 different renders in a row without issues. I have no idea why it is working fine now after 2 weeks of problems. The only thing that has changed on my system is that I installed the 2 MS .net updates from last week. Well thanks for the suggestions, hopefully the problem does not return.

December 28th, 2011, 05:25 PM	#1
Mark Kossin New Boot Join Date: Dec 2011 Location: North Salt Lake, Utah Posts: 5	Render as AC3 file is bad So I just finished a major project for my parents. I made DVD's of all their camcorder tapes, 30 tapes spanning 35 years. Everything was going well until Vegas started outputting garbage AC3 files. I am using Vegas 11 64bit (Build 511). The AC3 render process runs and completes as normal, DVDA will even open it and builds peaks for it. However the audio is junk, it is 2 relatively straight lines and just a humming noise. There is no consistency to the problem, sometimes Vegas will render a good file the first time other times it will take 5 or 6 attempts. I have uninstalled and re-installed Vegas but the problem remains. Any help would be appreciated.

January 3rd, 2012, 04:21 AM	#2
Jeremiah Rickert Major Player Join Date: Dec 2003 Location: Newberg, Oregon Posts: 494	Re: Render as AC3 file is bad Which AC3 template are you using? Have you tried exporting as a different format (like .wav) ? Will DVDA transcode all audio into AC3? Or does it make you start with an AC3 file to be totally compliant?

January 4th, 2012, 02:05 PM	#3
Mark Kossin New Boot Join Date: Dec 2011 Location: North Salt Lake, Utah Posts: 5	Re: Render as AC3 file is bad I have tried all AC3 options, AC3 studio and pro. All have the issue, I use AC3 because DVDA uses it natively without the need to re-encode. I will try other audio formats to see if they have the same problem.

January 4th, 2012, 03:06 PM	#4
Don Bloom Inner Circle Join Date: Jan 2003 Location: Chicago, IL Posts: 6,609	Re: Render as AC3 file is bad Don't know what might be causing the problem but if you give DVDA a wav (PCM) file it will simply render it to AC3 without detriment to the file. Then before you birn it check it in DVDA to make sure it's OK. __________________ What do I know? I'm just a video-O-grafer. Don

January 4th, 2012, 10:52 PM	#5
Mark Kossin New Boot Join Date: Dec 2011 Location: North Salt Lake, Utah Posts: 5	Re: Render as AC3 file is bad So I tried other audio formats tonight MP3 and Wav, both had no issues. I decided to try AC3 again and was able to do 6 different renders in a row without issues. I have no idea why it is working fine now after 2 weeks of problems. The only thing that has changed on my system is that I installed the 2 MS .net updates from last week. Well thanks for the suggestions, hopefully the problem does not return.