gstreamer - 如何从收音机流式传输并使用 gstreamer 将其转换为 opus 并将其发送到 Janus？

Question

我正在尝试使用这个 .sh 将 gstreamer 流式传输到 Janus：

#!/bin/sh
gst-launch-1.0 \
  souphttpsrc location="URL".m3u ! \
    audioconvert ! audio/x-raw,channels=1,rate=16000 ! \
    opusenc bitrate=20000 ! \
      rtpopuspay ! udpsink host=127.0.0.1 port=5002

但收到此错误：

Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
Got context from element 'souphttpsrc0': gst.soup.session=context, session=(SoupSession)NULL, force=(boolean)false;
ERROR: from element /GstPipeline:pipeline0/GstSoupHTTPSrc:souphttpsrc0: Internal data stream error.
Additional debug info:
gstbasesrc.c(3072): gst_base_src_loop (): /GstPipeline:pipeline0/GstSoupHTTPSrc:souphttpsrc0:
streaming stopped, reason not-negotiated (-4)
ERROR: pipeline doesn't want to preroll.
Setting pipeline to NULL ...
Freeing pipeline ...

有任何想法吗？