Bug Report Decklink64.dll referenced in crash.

[alhttabe]

I recently tweeted about an issue surrounding crash I was having with OBS-Studio 0.11.1 (and had happened previously on 0.10.x).

The setup is as follows:
- An Avermedia capture card pulling video from a BMD Atem Studio.
-The computer used for streaming is the same used to control the ATEM & has the ATEM software installed.

In OBS-Studio I have a scene with a single source, a Video Capture Device for the Avermedia card.

The issue results under the following condition: If I attempt to open the Properties for the Video Capture Source (64bit & 32bit), or also attempt to add a Video Capture Source (32bit & 64bit) I get the crash message. If the fault occurs whilst streaming, it is generally accompanied by stuttering in the audio and sometimes after a scene switch (there is a scene with a static image & an mp3 playing).

An yep... have tried turning it off and on again. :p

 

[Lain]

Thanks for the report. I'm guessing that if there is no blackmagic device plugged in you get this crash?

 

[alhttabe]

Yeah. To resolve in the short term, I've offloaded the atem control software to a VM.

I'm also noticing an Apple DLL isn't loading, and that's causing audio issues. The issue doesn't occur on the old OBS, which I've switched back to.

 

[dodgepong]

What kind of audio issues is it causing? The Apple DLL that you're referring to is probably CoreAudio, which is optional and only works if you have iTunes or Quicktime installed. If you don't, OBS falls back to FFmpeg's AAC encoder, or Media Foundation's AAC encoder on Windows 8+.

 

[alhttabe]

Yep, bang on there re the core audio thing. The issue with the audio, sounds like a sampling rate issue. It begins to stutter at regular intervals, in this case when trying to down sample a 48k stereo input to 44.1k mono stream. I can do that fine in obs-vanilla. Hence I looked in the log and saw that coreaudio DLL thing.

I also noticed that media sources playing a local mp3 won't actually loop even if selected to loop.

 

[Lain]

I'll fix the decklink issue. Thanks again. Putting it on my bug tracker as a to-do for next patch.