Batch Renders and Audio FX

MonstersAbound wrote on 1/7/2018, 5:38 AM

Hi,

I picked up Vegas Pro recently, I was previous using Movie Studio. One of the reasons I wanted to pick Pro up was the batch rendering. It's worked great... except, I don't believe it's picking up my audio fx.

I have a standard template which I use to produce videos with two tracks, one voice, one audio and I have specific settings for both tracks (tweaking the voice and turning down the audio). If I batch render, they don't seem to work. If I render one at a time (or batch render targeting selected region only) then it's fine.

I'm a bit perplexed as to why this might be, hoping someone can help.

Comments

Marco. wrote on 1/7/2018, 7:53 AM

Sounds strange. There should be no relation between the way you render and the FX applied in the timeline. Should …

Which version and which build of Vegas Pro do you use?
Which audio fx are used?
Which way do you batch render and what kind of render template do you use there?

MonstersAbound wrote on 1/7/2018, 9:19 AM

That's what I thought, basically batch rendering should just... render in turn, with the same settings. Which is why im so confused.

 

Im using Vegas Pro 14 build 270 64-bit.

Audio FX's are, for the Voice Track, ExpressFX Graphic EQ, I've saved a Preset which makes some changes but also makes my voice louder (4.1 dB). For the Audio it's just a Volume FX which reduces dB to -7.

I render by moving all of the video clips I want to amalgamate into individual videos, do my editing and FX's and so on and then set each video up in a region and Tools -> Scripting -> Batch Render -> Render Regions.

Project Template is a custom, but based on HD 1080-60i (1920x1080, 29.970 fps) the custom settings don't change the audio.

Render Template is, again, a custom job based on MainConcept AVC/AAC - Internet HD 1080p, again, no changes to audio settings there.

I've uploaded two videos (the same one) to YouTube one which was batch rendered, the other which was from the same project (with multiple regions) and batch rendered, but just with "Selected Region" rather than "Render Regions" selected.

Maybe I'm just going totally insane but... the audio is not the same... right?

 

Batch -

Single -

 

 

 

Former user wrote on 1/7/2018, 9:23 AM

Video links don't work.

MonstersAbound wrote on 1/7/2018, 9:30 AM

Bugger, left them on private, obviously. Should work now!

Marco. wrote on 1/7/2018, 2:15 PM

At a first glance, the audio of both clips sounds same to me.

Is there a certain timecode to listen to where the difference should be very noticable?

MonstersAbound wrote on 1/7/2018, 3:28 PM

I'm sure there is a difference, I could be spiralling into madness... maybe a little from column A and a little from column B.

Try 9:20-9:30ish. The sounds of audio (more specifically impacting rocks and shouting dwarfs) drown out the voice in the batch rendered video, where as the single rendered video it's much clearer because of the FX on the tracks reducing the rocks and increasing the voice.

 

Former user wrote on 1/7/2018, 3:58 PM

I hear a difference. The voice definitely stands out more in the correct version. Don't know why it doesn't work as a batch though.

MonstersAbound wrote on 1/7/2018, 4:10 PM

Well, at least I'm not spiralling into insanity, so there's that.

Marco. wrote on 1/7/2018, 5:00 PM

True, I now also noticed there are slight differences in the audio levels. Very strange.

I tried to repro by using just one clip in the timeline. I applied ExpressFX Graphic EQ as Track FX and set the output gain within the Graphic EQ FX to -15 dB.
I rendered this once directly by using the MainConcept AVC Internet preset then once again via the batch render script with same render preset.
But in my case there is no difference between batch render and direct render.

MonstersAbound wrote on 1/8/2018, 1:51 AM

The only thing I can think of, and... this is a very uneducated guess, is that I use presets for my audio FX... which I were automatically bought in from Vegas Movie Studio 13 (as in when I installed Vegas Pro they were in the list of presets in Vegas Pro). Maybe batch rendering and preset audio FX bought in from another version of Vegas don't play well together.

As this is an issue only I seem to be experiencing, that's about the weirdest, most specific concoction, of events I can come up with that might cause a problem. I'll recreate the presets in Vegas Pro and see if that fixes the problem.

Marco. wrote on 1/8/2018, 3:15 AM

Could you offer this certain Vegas Pro project file for download? Then I could replace the timeline events with my own media and let me have a closer look onto it.

MonstersAbound wrote on 1/8/2018, 4:56 AM

Thank you very much for taking the time to investigate, dropbox ok?

Give this a try (I've not used Dropbox before so... fingers crossed)

https://www.dropbox.com/s/etn1ax302pypbtl/Jan6.veg?dl=0

Marco. wrote on 1/8/2018, 10:20 AM

Download worked fine, thanks. Though I still can't repro.

I replaced your audio files against my own ones, then first rendered the single regions directly, then again rendered the same regions with same render preset via the given batch render script. The resulting audio is identical here.

Though I now used Vegas Pro 15. I will retry with Vegas Pro 14 later.

Edit:
Just tested in VP14 now. Same result as above. I can't repro this issue.