Subject: [linux-audio-user] Recording Internet Stream, Duplex, Help!?
From: Ed (lau_AT_frosch.org)
Date: Sat Jan 24 2004 - 19:07:08 EET
Hi LAU,
OK, after 4 hours on this and enough Googling to break my keyboard, I
have to admit defeat.
What I Want To Do:
1. Load a web page containing a Flash Film
2. Play the Flash Film
3. Record any sound the Flash Film delivers to a WAV file.
4. Maybe post-process the WAV into Ogg, MP3, etc.
What I Have (Hardware + Software):
1. SB Audigy
2. Alsa kernel drivers, 1.0.0 RC2
3. Alsa libs, 1.0.0 RC2
4. Jack, compiled with the above Alsa libs
5. Ecasound, compiled with the Alsa libs and Jack
What works:
1. Sound from CD, System beeps, etc. works
What doesn't work:
1. Alsa: arecord -f cd -o test.wav, when playing an Ogg file, e.g.
2. Ecasound: ecasound -i:alsahw,0 -o test.wav, when playing an Ogg
file, e.g.
Am I missing something fundamental here? I can't imagine that this is an
especially arcane wish, simply wanting to record and play at the same
time, yet I can't find anything on this which helps. I have played with
alsamixer for about an hour, but I simply get silence all the time. All
the 'capture' devices are things like Mic, CD, Line-In, etc., which is,
obviously, NOT what I want. I simply want to record what I am currently
hearing -- although I'm testing this with playback of Ogg, actually I
clearly want to record the sound from the Flash Film mentioned.
I have read the various docs for Alsa, Ecasound and Jack, but I have to
admit that sound on Linux is *very* confusing. I am not really sure
whether I'm supposed to be using /dev/dsp, alsahw, or some other arcane
terminologies -- kernel compilation is easy in comparison! I'm not
getting any errors, by the way, everything *seems* to work, but when I
stop playback and check the output, all I hear is dead air.
I can (joyfully!) send the output of amixer if that would help, hope to
get a reply on this one soon. In Windows, this is a 5-minute no-brainer.
Install Total Recorder, and that's that. I can't imagine that it must be
so complex in Linux? First time I've really hit a wall in Linux -- which
clearly shows that sound is something which needs to be clarified a
*LOT* in Linux. (Having alsamixer start with everything mute is a good
example of this!)
Thanks a million if anyone can help: otherwise I'm rebooting into
Windows for now, since there's no other way of doing this at the moment.
Ed
This archive was generated by hypermail 2b28 : Sat Jan 24 2004 - 19:07:01 EET