audio error using syphon recorder

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  • #58635
    caris3
    Participant

    Has anyone else received the message “osstatus error 1718449215” when attempting to record using aac format? I just recently began having this issue. It was working fine before (made several recordings). Linear PCM format works, but the file size is too large. I need to find out why it won’t record in aac suddenly. Any help would be appreciated
    Error Code

    • This topic was modified 6 years, 7 months ago by caris3.
    #58637
    bangnoise
    Keymaster

    Check you’re using the latest version – earlier versions had problems with some third-party audio hardware. If updating doesn’t help, let us know.

    http://syphon.v002.info/recorder

    #58638
    caris3
    Participant

    Thanks for you reply. We tried the update to beta 12 to no avail. It had been recording fine until last week using beta 11 with aac as the selected audio format. This really has me perplexed.
    When I researched this error type, it led me to Audio Queue Services, a C programming interface in the Audio Toolbox framework, which is part of Core Audio.
    It said that code 1718449215 stands for “kAudioFormatUnsupportedDataFormatError” with the following description “The playback data format is unsupported (declared in AudioFormat.h)”
    Do you think I might be having an encoding problem (trouble with the aac codec)?

    • This reply was modified 6 years, 7 months ago by caris3.
    #58640
    vade
    Keymaster

    I wonder if you installed a codec like Perian or something that adds additional codecs, either that, or the bit depth of the channels you are recording is quite high? Hrm.

    #58641
    caris3
    Participant

    Thanks again for your replies. To my recollection, I haven’t installed any new codecs recently. I’m thinking that I should check: (a) that the aac codec is showing in my system (Lion 10.7), and (b) what the bit depth is on the channels I am recording.
    For checking point a: Can you tell me which folder to look for the aac codec in and what I should see?
    For b: I use a Roland FireWire Audio Capture, 24 bit, 192 kHz. There’s a switch for sample rate with options for 192, 96, 48, and 44.1. Currently it is set at 96.
    Thanks in advance for any suggestions.

    • This reply was modified 6 years, 7 months ago by caris3.
    #58644
    bangnoise
    Keymaster

    The codec is unlikely to have gone astray. I have access to an FA-66 – I’ll try to recreate the problem as soon as I get a moment.

    #58645
    caris3
    Participant

    Thanks for your help. In the meantime, I tried changing the sample rate from 96 to 192 (and re-booting), but it still causes the error.
    Any suggestions are appreciated.

    #58652
    bangnoise
    Keymaster

    For now, change the sample-rate on the device to 48 or 44.1. A future update will down-sample if you attempt to use a higher sample-rate for AAC.

    #58653
    bangnoise
    Keymaster

    Perhaps you could check how this build works for you – it will reduce the sample-rate for AAC if it’s higher than the AAC encoder can handle. It also adds support for more than two channels for LPCM audio.

    http://syphon.v002.info/downloads/Syphon%20Recorder13.zip

    #58654
    caris3
    Participant

    That solved it! You were right about the sample rate. It must have been changed inadvertantly to the higher rate and it did make a difference. I am now running the new build with the additional capabilities. Thank you again for this great device and all of your help troubleshooting my issue.

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