Hi,

On Friday 27 February 2009 01:38:20 Sinisa Dukanovic wrote:
> Hi everyone,
> i own a Philips SPC1300NC which runs fine with uvc. Recording video never
> was an issue, and since a weeks i can even record audio using the internal
> mix of the camera. But i was never able to record audio and video at the
> same time; not in skype, nor in any other application. When trying to
> videophone with skype my communication partner receives perfect video but
> only distorted audio. I some how realized the the audio distortion starts
> when i start video. Running a few tests outside of skype (with arecord and
> luvcview) i now have a deterinistc behaviour:
> 1) When audio recording is started prior to video recording, audio
> recording goes only well until video recording is started.
> 2) When video recording is started prior to audio recording, both work
> perfectly
> For my test i used
> skype(video test in options) + skype(audio-only phone call)
> skype(video test in options) + arecord
> luvcview + skype(audio-only phone call)
> arecord + luvcview
>
> In all cases 1) and 2) hold.
>
> Does anybody know why this happens? Whether this is a uvc-bug or an
> alsa-bug? Any hints on how to debug this?

I'm afraid I have no idea. It might even be a big in the camera itself.

Best regards,

Laurent Pinchart

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