Audio doubling up and lagging

Ellen Richards

New Member
Hi, Hoping someone can assist. I am recording VHS video's to MPG4 files. Using OBS Studio and an LG Video Player + Avermedia DVD Ezymaker 7. First I need to change the 'Configue Video' settings every time I open OBS as it reverts to PAL_B and I need it to be NTSC_M. For some reason even though I apply and save it reverts to PAL once I exit OBS.

Additionally, The audio starts way after it should so it's not aligned to the scene that is showing at the time - any ideas to sort that out would be greatly appreciated.

Finally, I hear a low-level recording, then a louder one that is delayed to there are two audio files occurring. What is interesting is that even after I stop the video and eject it, I can still hear the louder audio. Any ideas on how to fix the afore mentioned are most welcome.
 

AaronD

Active Member
I need to change the 'Configue Video' settings every time I open OBS as it reverts to PAL_B and I need it to be NTSC_M. For some reason even though I apply and save it reverts to PAL once I exit OBS.
I wonder if your capture card defaults to that, and OBS is reading from it and changing the Properties, instead of writing from the saved Properties to the card. At any rate, I might call this behavior a bug, and possibly worthy of being split into its own dedicated thread.

The audio starts way after it should so it's not aligned to the scene that is showing at the time - any ideas to sort that out would be greatly appreciated.

Finally, I hear a low-level recording, then a louder one that is delayed to there are two audio files occurring. What is interesting is that even after I stop the video and eject it, I can still hear the louder audio.
Does it continue to increase in volume, so that it starts distorting and becomes unintelligible? I wonder if you have a feedback loop, with gain.

It's easy to create a feedback loop by accident:
  • Send something to OBS's Monitor. (Advanced Audio Properties) Maybe you want to hear what OBS is actually getting, or something like that.
  • Send the Monitor to the physical device that you're listening on. (Settings -> Audio)
  • Set either a Desktop Audio source (Settings -> Audio) or an Audio Output Capture source (in a scene) to the same device that the Monitor is going to.
  • Now that Monitored thing also appears in the Desktop or Output Capture. If you send *that* to the Monitor as well, that completes a loop.
Normally, there's no gain or loss associated with that loop (100% volume), but there *is* a delay from the amount of time it takes to go through Windows' audio system, from the Monitor output to the Desktop or Output Capture input.

In your case, if you have a small amount of gain somewhere (maybe 101%, or something like that, or a filter that has some slight gain to it), and if you have the original volume low enough to be hard to hear, then the first you notice could be after several trips around the loop already, and subsequent trips are even louder. And because the loop feeds itself, stopping the original input doesn't stop the loop.

The way to fix it, is to find and break the loop. If all you're doing is recording a single external source, the best way to do that is probably to set the Desktops to Disabled (Settings -> Audio) and remove any Output Captures. Then OBS is not listening to anything that leaves the computer, and you can use the Monitor freely.
 

Rubika

New Member
It sounds like you're dealing with several frustrating issues while recording VHS tapes to MP4 using OBS Studio. Here are some suggestions that might help:

  1. Video Settings Reverting to PAL: OBS sometimes doesn't save device-specific settings properly. You can try creating a new scene collection and configuring your video input again. Also, make sure to click "OK" instead of just "Apply" after making changes in the "Configure Video" settings.
  2. Audio Sync Issues: If the audio is delayed or out of sync, try adjusting the "Audio Delay" settings in OBS. You can find this under the "Advanced Audio Properties" by right-clicking on your audio source. Experiment with different delay values to align the audio with the video.
  3. Double Audio Playback: Hearing two audio tracks could be due to the audio source being duplicated. Check the audio settings in both OBS and your operating system. Make sure that your input device (the Avermedia capture card) isn't being monitored through your system's audio settings while also being captured in OBS. Disable any unnecessary audio monitoring to resolve this.
Hopefully, these tips help resolve your issues. Let me know if you have more questions or need further assistance!
 

AaronD

Active Member
It sounds like you're dealing with several frustrating issues while recording VHS tapes to MP4 using OBS Studio. Here are some suggestions that might help:

  1. Video Settings Reverting to PAL: OBS sometimes doesn't save device-specific settings properly. You can try creating a new scene collection and configuring your video input again. Also, make sure to click "OK" instead of just "Apply" after making changes in the "Configure Video" settings.
  2. Audio Sync Issues: If the audio is delayed or out of sync, try adjusting the "Audio Delay" settings in OBS. You can find this under the "Advanced Audio Properties" by right-clicking on your audio source. Experiment with different delay values to align the audio with the video.
  3. Double Audio Playback: Hearing two audio tracks could be due to the audio source being duplicated. Check the audio settings in both OBS and your operating system. Make sure that your input device (the Avermedia capture card) isn't being monitored through your system's audio settings while also being captured in OBS. Disable any unnecessary audio monitoring to resolve this.
Hopefully, these tips help resolve your issues. Let me know if you have more questions or need further assistance!
It sounds like you're using ChatGPT. All it's doing is stringing together meaningless words (as far as it knows) in a pattern that matches what it's seen elsewhere. Whether it's right or not is anyone's guess. In a "random with filter" mindset, it's random and you're the filter!

Superficially, nothing here is factually wrong (that's not guaranteed either!), but it's only superficial. Essentially a rewording of the question and not much more.
 
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