Sony Vegas render settings for audio component of music vid

[Armistice]

Howdy...

I've been knocking up a few videos of some of my instrumental stuff and one in particular I can't get the damn audio to render without glitches. The track itself is an MP3 / 320 / 44.1 and I set the audio render settings to match. There's nothing wrong the the audio file itself and is sounds fine when playing on the timeline.

There's just a couple of places where it always glitches. I redid the MP3 file from 192 to 320 thinking that might solve it, but it glitches in the same spot. I do not have this issue with any other video I've done. Just this one. I thought the audio would be the easy bit...

The video part is fine, incidentally. I'm rendering to MP4 using VBR Max 4mil Min 2mil / 25 fps (PAL) - I don't really know where those settings came from incidentally...

Anything you think I should try?

Cheers

 

[bouldersoundguy]

Most video is delivered with 48k audio. MP4 uses AAC audio format, not MP3 audio. You can't assume that the output format should match the input format either in terms of sampling frequency or bandwidth. I would leave the audio set to the defaults, which are probably 48k sampling frequency and 128kbps bandwidth. Try that and see if it's any better.

By the way, what version of Vegas are you using?

 

[Armistice]

Hi Boulder..

I'm using Vegas Movie Studio Platinum HD 10.0. Wondered about that setting... but trying to get useful info about this generally on the web seems to leave you at the mercy of a myriad of YouTube videos by people that say "do it this way" without apparently any understanding of what they're actually doing and why!

The strange things are (a) no problem with any of the other half dozen videos I've done using similar raw materials and settings, and (b) irrespective of any changes I've made, it always glitches in the same spots.

I'll try some different settings on the audio then, and see how I go.

I just did a render of a 5 second section only to see if it glitched in the same spot, and it did, so I guess I can muck around a bit with the settings on this section to save myself 30 minutes of waiting each time! I'll let you know how it goes..

Cheers

 

[bouldersoundguy]

Getting a glitch in the same spot seems odd. Can you convert the audio to WAV before importing?

 

[Armistice]

Yeah, when I tried every conceivable setting, and moved the track up and down the time line a few seconds and still nothing made a difference and the glitch followed the music, I tried re-encoding the audio first using an AAC encoder (MP4) figuring they may play nice together, and then when that didn't work, I tried it as WAV... glitches still there but not as noticeable, so that's got me thinking I might haul the original recording out and remaster it - haven't actuallly listened to the CD on my new stereo yet, it being particularly good at highlighting stuff I've done badly, but I'm wondering.. I released the damn thing about 7 years ago, so why I'm hearing it now and not then, if there are actual errors... who knows!

Perhaps it's just that the rendering process is highlighting weaknesses that are there that aren't so audible in the native format....

Thanks for the help...