Question / Help Audio bitrate always recorded lower then what I set

Roy777

Member
Hello friends,

I'm trying to record through OBS in 44.1KHz and 192kbps. I always seems to get values between 144kbps and 159kbps when I check in the properties of the file in windows.

I have set all tracks on the output-> Audio tab to 192kbps just to be sure
and cleared the check box from the output-> streaming page for "Enforce streaming encoder settings" if it matters.

What can be wrong?

Thank you,

Roy.
 

rockbottom

Active Member
Check the file(s) with Media Tab or even with VLC (Tools > Codec Information). Both will report the bit-rate correctly & more than likely the results will be slightly different from what you're seeing w/Windows.
 

Roy777

Member
Check the file(s) with Media Tab or even with VLC (Tools > Codec Information). Both will report the bit-rate correctly & more than likely the results will be slightly different from what you're seeing w/Windows.

Thanks for your reply and for telling me about Media Tab :) I couldn't see the bitrate in VLC, it only shows me the sample rate.

But this is what I get with Media Tab:

File bitrate.PNG


So why the audio bit rate mode is Variable? can it be fixed on 192kbps?

Thanks a lot,

Roy.
 

rockbottom

Active Member
Not really sure, the audio has always been CBR in all of my OBS recordings.

Are you using a custom encoder?

If you can post a log with a recording session, I'll take a look for ya.
 

Roy777

Member
Not really sure, the audio has always been CBR in all of my OBS recordings.

Are you using a custom encoder?

If you can post a log with a recording session, I'll take a look for ya.

Thanks a lot, you've nailed it :) I was using an ASIO plugin to use with my audio interface as I got a slight delay using OBS without it, but apparently it sets the bitrate to be variable. I've tested and using a mic going straight to the PC audio input- I do get a constant 192kbps, so it's definitely it. I do want to use my audio interface with real time live monitoring so.. more messing around with ASIO plugins and other software I guess. If you happen to have any idea about that I'll be happy to know.. Thanks a lot again :)
 

rockbottom

Active Member
Cool, YW!

When I get a chance I'll install the plug-in & see what happens with my Asus Xonar STX. I already have the ASIO driver installed for it for other apps I use but never had a reason to go that route with OBS.
 

Roy777

Member
Cool, YW!

When I get a chance I'll install the plug-in & see what happens with my Asus Xonar STX. I already have the ASIO driver installed for it for other apps I use but never had a reason to go that route with OBS.

Thanks so much :) but now I'm not sure it's related to the ASIO plug-in at all, I think it's something about some of the VST 2.0 plug-ins, whenever some are activated the audio stream is set as variable and when they are all off it's constant.. weird.. but still testing :)

Thanks again.
 
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