从 alsasrc 获取警告消息

Question

gst-launch-1.0 v4l2src ! videoconvert ! video/x-raw,format=I420 ! videoparse width=640 height=480 framerate=30/1 ! x264enc bitrate=2048 ref=4 key-int-max=20 byte-stream=true tune=zerolatency ! video/x-h264,stream-format=byte-stream,profile=main ! queue ! mux. alsasrc ! audioparse rate=44100 format=raw raw-format=s16le channels=2 ! faac perfect-timestamp=true ! aacparse ! queue ! mux. mpegtsmux name=mux ! rtpmp2tpay ! udpsink host=10.0.0.239 port=9090 sync=true async=false qos=true qos-dscp=46

在执行上述管道时，我不断收到以下警告消息..

Additional debug info:
gstaudiobasesrc.c(863): gst_audio_base_src_create (): /GstPipeline:pipeline0/GstAlsaSrc:alsasrc0:
Dropped 12789 samples. This is most likely because downstream can't keep up and is consuming samples too slowly.
WARNING: from element /GstPipeline:pipeline0/GstAlsaSrc:alsasrc0: Can't record audio fast enough
Additional debug info:
gstaudiobasesrc.c(863): gst_audio_base_src_create (): /GstPipeline:pipeline0/GstAlsaSrc:alsasrc0:
Dropped 8820 samples. This is most likely because downstream can't keep up and is consuming samples too slowly.

那么如何克服呢？？

Answer 1

问题与警告消息相同This is most likely because downstream can't keep up and is consuming samples too slowly.

换句话说，您的过程很慢，因此无法跟上输入速度。 从最高优先级尝试以下解决方案：

1. 将queue也添加到视频分支
2. 将属性 sync=false 设置为 udpsink（在某些情况下有效，但当然不是很好，因为它可能会导致某些部分速度异常）
3. 将属性 provide-clock=false 设置为 alsasrc（在某些情况下可能会在音频时钟不好的情况下起作用）
4. 调整管道以在视频处理分支中提高速度

如果您无法调整管道，唯一的选择是 .... 停止打印调试日志，并接受此限制 ...