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Old 10 September 2018, 18:00   #1
EAUniW
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Floppy disk Problem capturing a 4 channel WAV / AVI file

When I go to capture an AVI file with 4 channels at 48khz, I receive the following error as I start up the emulator -

acmStreamOpen() FAILED (200)

I've captured 4 channel audio from WinUAE before using the same PC and OS set-up but now it's not working, only with mono and stereo, nothing above 2 channels. I use the K-lite codec pack and the usual standard drivers for Windows.

If anyone can help, it would be really appreciated as I like to capture the audio on a channel by channel basis and create new mixes of music not available as MOD files
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Old 10 September 2018, 19:05   #2
Toni Wilen
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Error means codec does not support selected channel numbers or frequency. (not very useful error)

If you only need audio, you can also use wav output mode: select file using "..." as normal but when dialog opens, change "Save as type" to "Wave Sound (*.wav)".
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Old 10 September 2018, 19:11   #3
EAUniW
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I tried that as well (WAV only) but the same problem came up, I also tried every sound driver able to be selected and and even reinstalling audio drivers, K-lite etc... nothing sadly
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Old 10 September 2018, 19:39   #4
Toni Wilen
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Recording WAV should always work, it does not use any external codecs.
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Old 10 September 2018, 20:05   #5
EAUniW
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I'll try reinstalling WinUAE, I'm using the latest non-beta version 4.0.1
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Old 10 September 2018, 20:17   #6
Toni Wilen
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I just tested and it worked fine. Make sure Audio codec in Output panel switches to "wave (internal)" and video is "no codec selected".
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Old 10 September 2018, 20:23   #7
EAUniW
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I went back to WinUAE 3.0.0 and same thing. Wave (internal) selected and no video codec. Even when I select 4 channels and start to record with those settings, it's only outputting a stereo 2 channel file.
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Old 10 September 2018, 20:29   #8
Toni Wilen
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I thought you meant you get error when trying to save as wav.

Does your sound hardware support 4 channels (4 channel Sound panel option stays enabled after emulation has started)? Recording is a bit inflexible and can only record what goes to physical sound channels.
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Old 10 September 2018, 20:30   #9
rhester72
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I think you're confusing channels with voices.

Amiga audio is 4-voice stereo, where any of those 4 voices can be assigned to either stereo channel.

Recording of that audio - just like within Paula itself - will result in mixed-voice stereo output.

Rodney
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Old 10 September 2018, 20:33   #10
EAUniW
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It's working now, bizarrely, I'll throw a few more games at it and khz options etc to make sure it's consistent. Thank you for your help
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Old 10 September 2018, 21:16   #11
Toni Wilen
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Quote:
Originally Posted by rhester72 View Post
I think you're confusing channels with voices.

Amiga audio is 4-voice stereo, where any of those 4 voices can be assigned to either stereo channel.

Recording of that audio - just like within Paula itself - will result in mixed-voice stereo output.
You can get all 4 Paula channels separately if sound panel is set to 4 channels and sound hardware supports it.

Quote:
Originally Posted by EAUniW View Post
It's working now, bizarrely, I'll throw a few more games at it and khz options etc to make sure it's consistent. Thank you for your help
Perhaps game you tested mirrored same sound samples in both left and right channels?
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Old 10 September 2018, 21:51   #12
EAUniW
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I tried it out with Monkey Island 2. The opening music is 4 Paula channels of samples just flying from every direction so it wasn't a mirroring issue. Reinstalling it and sticking to wave internal seemed to clear it up thankfully.
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