[gst-devel] Ogg, Spider, and Volume not working together
Thomas Vander Stichele
thomas at apestaart.org
Thu Mar 4 10:14:00 CET 2004
On Thu, 2004-03-04 at 18:29, John Thacker wrote:
> I upgraded to 0.7.5 and then again to CVS HEAD, but noticed a tremendous
> amount of static when trying to play any ogg files with rhythmbox.
did you have this on both HEAD and 0.7.5 ?
> Looking through the rhythmbox source, I noticed that it sends the stream
> through spider and volume before going to the sink. Experimenting on
> the command line, I was able to reproduce the static with the following:
> gst-launch-0.7 filesrc location=filename.ogg ! spider ! volume ! osssink
> Same results with static when I use alsasink or esdsink at the end.
> gst-launch-0.7 filesrc location=filename.ogg ! spider ! osssink
> also produces static, but using alsasink or esdsink at the end sounds
> perfectly fine.
that *is* confusing.
> gst-launch-0.7 filesrc location=filename.ogg ! vorbisfile ! volume ! osssink
> is also fine, along with any other output sink. Also fine without volume.
hm, we were planning on deprecating vorbisfile I think (Benjamin, should
it be in 0.8 ?), but ...
> gst-launch-0.7 filesrc location=filename.ogg ! oggdemux ! vorbisdec ! alsasink
> is also fine. No sound if I use osssink, though, with lots of errors of
> the type:
> (process:29366): GStreamer-WARNING **: push on peer of pad vorbisdec0:src but peer is not active
It should error out before, but since vorbisdec sends out float audio,
not int, you need a convertor between vorbisdec and osssink. I didn't
know though that alsa handled float audio.
> Trying to put volume in that path after vorbisdec produces an error:
> ** (process:29387): WARNING **: error scheduling group 0x8f45410
> and then the process ends abruptly, regardless of output sink.
> Fairly confusing to me. What other information, if any, would be
I'll try each of your pipelines and see about fixing the error handling
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