我想用 Gstreamer 从 MIC 流式传输音频数据。但是我无法使用 rx 播放 MIC 音频。如何从 MIC 输入播放音频流？
tx: gst-launch-1.0 -v alsasrc device="hw:0" ！解码器！音频转换！rtpL16pay ！队列 ！udpsink 主机=239.0.0.1 自动多播=真端口=5004
rx：gst-launch-1.0 udpsrc 多播组=239.0.0.1 端口=5004 caps="application/x-rtp" ！rtpL16depay！阿尔萨西克
rx 结果：将管道设置为 PAUSED ... 管道处于活动状态，不需要 PREROLL ... 将管道设置为 PLAYING ... 新时钟：GstSystemClock 错误：来自元素 /GstPipeline:pipeline0/GstUDPSrc:udpsrc0：内部数据流错误。附加调试信息：../../../../gstreamer-1.8.1/libs/gst/base/gstbasesrc.c(2948): gst_base_src_loop (): /GstPipeline:pipeline0/GstUDPSrc:udpsrc0: 流式任务暂停，原因未协商 (-4) 执行在 0:00:00.009364000 后结束 将管道设置为 PAUSED ... 将管道设置为 READY ... 将管道设置为 NULL ... 释放管道 ...
tx 结果如下。
将管道设置为 PAUSED ... 管道处于活动状态，不需要 PREROLL ... 将管道设置为 PLAYING ... 新时钟：GstAudioSrcClock /GstPipeline:pipeline0/GstAlsaSrc:alsasrc0:actual-buffer-time = 200000 /GstPipeline:pipeline0/ GstAlsaSrc:alsasrc0: 实际延迟时间 = 10000 /GstPipeline:pipeline0/GstAlsaSrc:alsasrc0.GstPad:src: caps = "audio/x-raw\,\ format\=(string)S16LE\,\ layout\=(string )interleaved\,\ rate\=(int)44100\,\ channels\=(int)2\,\ channel-mask\=(bitmask)0x0000000000000003" /GstPipeline:pipeline0/GstDecodeBin:decodebin0.GstGhostPad:sink.GstProxyPad: proxypad0: caps = "audio/x-raw\,\ format\=(string)S16LE\,\ layout\=(string)interleaved\,\ rate\=(int)44100\,\ channels\=(int)2 \,\ 通道掩码\=（位掩码）0x0000000000000003" /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstTypeFindElement:typefind.GstPad:src: caps = "audio/x-raw\,\ format\=(string)S16LE\,\ layout\=(string)interleaved\,\ rate\=(int)44100\,\ channels\= (int)2\,\ channel-mask\=(bitmask)0x0000000000000003" 重新分配延迟... /GstPipeline:pipeline0/GstAudioConvert:audioconvert0.GstPad:src: caps = "audio/x-raw\,\ layout\=( string)interleaved\,\ rate\=(int)44100\,\ format\=(string)S16BE\,\ channels\=(int)2\,\ channel-mask\=(bitmask)0x0000000000000003" /GstPipeline:pipeline0 /GstRtpL16Pay:rtpl16pay0.GstPad:src: caps = "application/x-rtp\,\ media\=(string)audio\,\clock-rate\=(int)44100\,\ encoding-name\=(string) L16\,\ encoding-params\=(string)2\,\ channels\=(int)2\,\ payload\=(int)96\,\ ssrc\=(uint)3961155089\,\ timestamp-offset\ =(uint)725507323\,\ seqnum-offset\=(uint)20783" /GstPipeline:pipeline0/GstQueue:queue0。GstPad:src: caps = "application/x-rtp\,\ media\=(string)audio\,\ clock-rate\=(int)44100\,\ encoding-name\=(string)L16\,\ encoding -params\=(string)2\,\ channels\=(int)2\,\ payload\=(int)96\,\ ssrc\=(uint)3961155089\,\ timestamp-offset\=(uint)725507323 \,\ seqnum-offset\=(uint)20783" /GstPipeline:pipeline0/GstUDPSink:udpsink0.GstPad:sink: caps = "application/x-rtp\,\ media\=(string)audio\,\ 时钟速率\=(int)44100\,\ encoding-name\=(string)L16\,\ encoding-params\=(string)2\,\ channels\=(int)2\,\ payload\=(int)96 \,\ ssrc\=(uint)3961155089\,\ timestamp-offset\=(uint)725507323\,\ seqnum-offset\=(uint)20783" /GstPipeline:pipeline0/GstQueue:queue0.GstPad:sink: caps = "application/x-rtp\,\ media\=(string)audio\,\clock-rate\=(int)44100\,\ encoding-name\=(string)L16\,\ encoding-params\=(string )2\,\ channels\=(int)2\,\ payload\=(int)96\,\ ssrc\=(uint)3961155089\,\ timestamp-offset\=(uint)725507323\,\ seqnum-offset\=(uint )20783" /GstPipeline:pipeline0/GstRtpL16Pay:rtpl16pay0.GstPad:sink: caps = "audio/x-raw\,\ layout\=(string)interleaved\,\ rate\=(int)44100\,\ format\= (string)S16BE\,\ channels\=(int)2\,\ channel-mask\=(bitmask)0x0000000000000003" /GstPipeline:pipeline0/GstAudioConvert:audioconvert0.GstPad:sink: caps = "audio/x-raw\, \ format\=(string)S16LE\,\ layout\=(string)interleaved\,\ rate\=(int)44100\,\ channels\=(int)2\,\ channel-mask\=(bitmask)0x0000000000000003 " /GstPipeline:pipeline0/GstDecodeBin:decodebin0.GstDecodePad:src_0.GstProxyPad:proxypad1: caps = "audio/x-raw\,\ format\=(string)S16LE\,\ layout\=(string)interleaved\,\ rate \=(int)44100\,\ 通道\=(int)2\,\ 通道掩码\=（位掩码）0x0000000000000003" /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstTypeFindElement:typefind.GstPad:sink: caps = "audio/x-raw\,\ format\=(string)S16LE\,\ layout \=(string)interleaved\,\ rate\=(int)44100\,\ channels\=(int)2\,\ channel-mask\=(bitmask)0x0000000000000003" /GstPipeline:pipeline0/GstDecodeBin:decodebin0.GstGhostPad: sink: caps = "audio/x-raw\,\ format\=(string)S16LE\,\ layout\=(string)interleaved\,\ rate\=(int)44100\,\ channels\=(int)2 \,\ 通道掩码\=（位掩码）0x0000000000000003" /GstPipeline:pipeline0/GstRtpL16Pay:rtpl16pay0: 时间戳 = 725507323 /GstPipeline:pipeline0/GstRtpL16Pay:rtpl16pay0: seqnum = 20783\ format\=(string)S16LE\,\ layout\=(string)interleaved\,\ rate\=(int)44100\,\ channels\=(int)2\,\ channel-mask\=(bitmask)0x0000000000000003 " /GstPipeline:pipeline0/GstDecodeBin:decodebin0.GstGhostPad:sink: caps = "audio/x-raw\,\ format\=(string)S16LE\,\ layout\=(string)interleaved\,\ rate\=(int )44100\,\ 通道\=(int)2\,\ 通道掩码\=(位掩码)0x0000000000000003" /GstPipeline:pipeline0/GstRtpL16Pay:rtpl16pay0: 时间戳 = 725507323 /GstPipeline:pipeline0/GstRtpL16Pay:rtpl16pay0: seqnum = 2078\ format\=(string)S16LE\,\ layout\=(string)interleaved\,\ rate\=(int)44100\,\ channels\=(int)2\,\ channel-mask\=(bitmask)0x0000000000000003 " /GstPipeline:pipeline0/GstDecodeBin:decodebin0.GstGhostPad:sink: caps = "audio/x-raw\,\ format\=(string)S16LE\,\ layout\=(string)interleaved\,\ rate\=(int )44100\,\ 通道\=(int)2\,\ 通道掩码\=(位掩码)0x0000000000000003" /GstPipeline:pipeline0/GstRtpL16Pay:rtpl16pay0: 时间戳 = 725507323 /GstPipeline:pipeline0/GstRtpL16Pay:rtpl16pay0: seqnum = 2078\通道\=（int）2\，\通道掩码\=（位掩码）0x0000000000000003“/GstPipeline：pipeline0/GstRtpL16Pay：rtpl16pay0：时间戳= 725507323 /GstPipeline：pipeline0/GstRtpL16Pay：rtpl16pay0：seqnum = 20783\通道\=（int）2\，\通道掩码\=（位掩码）0x0000000000000003“/GstPipeline：pipeline0/GstRtpL16Pay：rtpl16pay0：时间戳= 725507323 /GstPipeline：pipeline0/GstRtpL16Pay：rtpl16pay0：seqnum = 20783
我认为 rx 管道是错误的，但我找不到解决方案。请告诉我如何制作管道。
PS：我尝试了以下命令，然后 rx 播放麦克风音频！这意味着接收设备无法播放 L16 音频？
tx: gst-launch-1.0 -v alsasrc device="hw:0" ！解码器！音频转换！音频重采样！阿拉文克！rtppcmapay ！队列 ！udpsink 主机=239.0.0.1 自动多播=真端口=5004
rx: gst-launch-1.0 udpsrc 多播组=239.0.0.1 端口=5004 caps="application/x-rtp, media=(string)audio, clock-rate=(int)8000, encoding-name=(string) PCMA，编码参数=（字符串）2，通道=（整数）1，有效载荷=（整数）8“！rtppcmadepay！阿拉法德！阿尔萨西克