Playback of raw PCM audio / Real-time muxing

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mmebane
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Playback of raw PCM audio / Real-time muxing

Postby mmebane » 16 Feb 2005 19:15

Hi there,

I have a project where I need to be able to take a network audio stream and save it to disk while playing it. After looking at several solutions, I believe VLC is currently the best suited to my needs.

The file I am trying to open is streaming data as raw PCM, signed 16-bit, little-endian, mono, 8000 Hz. When I try to stream it directly, it doesn't work. When I use the "Dump raw input" option, I get a data stream I can import into Audacity, but that doesn't fulfill my need to playback in realtime while recording.

I also would like the ability to open this stream as well as an MJPEG stream and play them in sync while muxing the data and saving it to disk. I have been unable to find an option in VLC to open seperate audio and video streams. Is this possible?

If VLC can't do these things, are there any other products, free or commercial, that can?

I'm using VLC 0.8.1 under Windows XP.

Thanks,
Mitchell Mebane

EDIT: I've been looking at the VLC documentation, and in Chapter 4 of the manual, it mentions "VLC should be able to recognize the file type. If it does not, you can force demultiplexer and decoder (see below)." However, the document does not actually cover this topic. I tried running vlc --help --codec, but this doesn't seem to bring up a list of allowed codecs.

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