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Audio stutter after upgrading to Vegas 9.0e
I’ve been using Vegas 9.0 without any problems for a few months; audio and video were fine and I’ve rendered plenty of short files that work perfectly.
Today I upgraded to 9.0e and since then I’ve hit a problem with audio. It has a very stable ‘stutter’ that isn’t related to any sort of hardware constraints (as in, I don’t think it’s related to CPU load) because it’s so clearly stable and structured. I’ve attached a screenshot to try and explain it, but essentially the audio drops out for exactly 9 frames (at 59.94 fps) then plays for 24 frames and then drops out again – this happens consistently right the way across the entire clip.
The input files are .mp4 captured from a Samsung H100. It used to work just fine until the upgrade. Files that I have previously rendered (also into .mp4) import without these audio drop-outs.
Has anyone seen this before? Does anyone have a workaround? I’ve tried multiple ways of importing the clip but I can’t make it work correctly.
Thanks
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9 Replies
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I would re-install Vegas Pro 9.0 and see if 9.0e is really the cause. Vegas does not do anything to the audio so it should not be causing dropouts that are visible in the wave form. (BTW that screen shot is way too small to really see what’s going on)
~jr
http://www.johnrofrano.com
http://www.vasst.com -
Thanks for the fast reply John. I’ve attached a slightly ‘better’ screenshot to illustrate what I’m talking about here. I also uninstalled 9.0e and installed the vanilla 9.0 and everything was back to normal again. I then installed 9.0c and didn’t have audio drop-outs, then finally re-installed 9.0e and the problem reoccurred. Like you say, I don’t expect Vegas to do any sort of pre-processing on the audio, and it’s also baffling that it works just fine for anything I already rendered to mp4.
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Did you check to see what is under your “Audio Device” in “preferences?” I use a Firewire audio unit and will get stuttering if that is not selected as the device….just a thought.
Scott Francis
Mind’s Eye Audio/Video Productions -
Hi Scott,
I checked; it’s listed as ‘microsoft sound mapper’ (I’m accessing the video files from a local drive on the PC). I have the option of ‘direct sound sound mapper’ and windows classic wave driver’; I’ll try each with a restart and see if it changes things at all. Thanks for the suggestion.
Andrew
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I would contact Sony support. It seems that something happened between Vegas Pro 9.0c and 9.0e that’s causing this problem and I’m sure they will want to fix it.
~jr
http://www.johnrofrano.com
http://www.vasst.com -
Hello Andrew,
I ran into the same problem when I tried to use the trial of Vegas Movie Studio 10 with the files from my Samsung HMX-H105. Here is the post I made then:
https://forums.creativecow.net/thread/24/910863
/jonas
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Hi Jonas,
Thanks for the link; looks like you were having exactly the same issue as me. I followed another link from your post and read down to this line from the forum admin:
Recently, with the help of some of you, we were able to identify an issue reading the audio stream from the Samsung HMX-H100 camcorder in Vegas Movie Studio HD Platinum 10
It’s odd that it only happened during an ‘upgrade’ to 9.0e, but I guess I’ll downgrade until they’re able to patch this problem, or transcode..
Thanks again
Andrew -
Did you fix this issues I am having the same problem
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Sadly, no. It seems to be a camera-specific problem and its waiting on Sony for a fix (see the linked posts). I’m stripping out the audio to aac and importing it as a separate track. Bit of a pain but it does work.
HTH
Andrew
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