<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Hi.<div class=""><br class=""></div><div class="">I am trying hard to understand what I am doing wrong using the audiomixer element. </div><div class="">I am using gstreamer 1.8.1 on Mac OS and I am trying to mix two audiostreams.</div><div class=""><br class=""></div><div class="">This basic pipeline works:</div><div class=""><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">gst-launch-1.0 autoaudiosrc ! audiomixer ! autoaudiosink</span></div></div><div style="margin: 0px; font-size: 11px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures;" class=""><br class=""></span></div><div style="margin: 0px; line-height: normal;" class="">This also works fine:</div><div style="margin: 0px; line-height: normal;" class=""><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">gst-launch-1.0 filesrc location=song2.mp3 ! mad ! audiomixer ! autoaudiosink</span></div><div class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><br class=""></span></div></div><div style="margin: 0px; line-height: normal;" class="">Now I want to mix those 2 together via the audiomixer like this:</div><div style="margin: 0px; line-height: normal;" class=""><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">gst-launch-1.0 filesrc location=song2.mp3 ! mad ! queue ! audioconvert ! audio/x-raw,channels=2,rate=44100,depth=16 ! audiomixer name=mix ! autoaudiosink autoaudiosrc ! queue ! audioconvert ! audio/x-raw,channels=2,rate=44100,depth=16 ! mix.</span></div><div style="margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures;" class=""><br class=""></span></div><div style="margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures;" class="">But it results in this:</span></div><div style="margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures;" class=""><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">PAUSERER rørledning ...</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">Rørledningen kører, og behøver ikke at blive PREROLL'ed ...</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">Rørledning sættes til AFSPIL ...</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">New clock: GstSystemClock</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">FEJL: fra element /GstPipeline:pipeline0/GstAudioTestSrc:audiotestsrc0: Intern datastrømsfejl.</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">Yderligere fejlsøgningsinformation:</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">gstbasesrc.c(2948): void gst_base_src_loop(GstPad *) (): /GstPipeline:pipeline0/GstAudioTestSrc:audiotestsrc0:</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">streaming task paused, reason not-negotiated (-4)</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">Execution ended after 0:00:00.036197000</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">PAUSERER rørledning ...</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">Rørledning sættes til KLAR ...</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">Rørledning sættes til NUL ...</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">Rørledning frigøres ...</span></div><div class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><br class=""></span></div><div class=""><span style="font-variant-ligatures: no-common-ligatures" class="">I can make it work however, by simply adding wavenc and wavparse to the autoaudiosrc like this:</span></div><div class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">gst-launch-1.0 filesrc location=song2.mp3 ! mad ! queue ! audioconvert ! audio/x-raw,channels=2,rate=44100,depth=16 ! audiomixer name=mix ! autoaudiosink autoaudiosrc ! queue ! wavenc ! wavparse ! audioconvert ! audio/x-raw,channels=2,rate=44100,depth=16 ! mix. </span></div><div style="margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures;" class=""><br class=""></span></div><div style="margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures;" class="">But why do I need to do that?</span></div><div style="margin: 0px; line-height: normal;" class=""><br class=""></div><div style="margin: 0px; line-height: normal;" class="">Thanx in advance!</div><div style="margin: 0px; line-height: normal;" class=""><br class=""></div><div style="margin: 0px; line-height: normal;" class="">- Michael</div></span></div></span></div></div></body></html>