如何使用GStreamer从IP RTMP摄像机流式传输到v4l2loopback摄像机? [英] How to use GStreamer to stream from IP RTMP Camera to v4l2loopback Camera?

问题描述

我正在尝试使用GStreamer将RTMP/RTSP流连接到v4l2loopback虚拟设备.

I am trying to use GStreamer to connect RTMP/RTSP stream to a v4l2loopback Virtual Device.

Works 1-RTMP到AutoVideoSink
sudo gst-launch-1.0 rtspsrc location = rtsp://192.168.xxx.xxx/live/av0！解码器！自动视频接收器
sudo gst-launch-1.0 rtmpsrc location = rtmp://192.168.xxx.xxx/live/av0！解码器！自动视频接收器

Works 1 - RTMP to AutoVideoSink
sudo gst-launch-1.0 rtspsrc location=rtsp://192.168.xxx.xxx/live/av0 ! decodebin ! autovideosink
sudo gst-launch-1.0 rtmpsrc location=rtmp://192.168.xxx.xxx/live/av0 ! decodebin ! autovideosink

Works 2-TestSrc到Dummy Video5
sudo gst-launch-1.0 videotestsrc！ v4l2sink device =/dev/video5

Works 2 - TestSrc to Dummy Video5
sudo gst-launch-1.0 videotestsrc ! v4l2sink device=/dev/video5

不起作用-RTMP到Dummy Video5 –没有错误，但不显示视频
sudo gst-launch-1.0 rtspsrc location = rtsp://192.168.xxx.xxx/live/av0 do-timestamp = true
protocols ="tcp"！ rtph264depay！ h264parse！解码器！ v4l2sink device =/dev/video5

Does not work - RTMP to Dummy Video5 – No error but does not show the video
sudo gst-launch-1.0 rtspsrc location=rtsp://192.168.xxx.xxx/live/av0 do-timestamp=true
protocols="tcp" ! rtph264depay ! h264parse ! decodebin ! v4l2sink device=/dev/video5

我非常怀疑Gstreamer的某些参数是必需的，我不知道.
因为日志文件中包含许多有关未知像素格式，默认值等的条目.

I highly suspect there are some parameters of Gstreamer that are required and I am unaware of.
Because the log file has a lot of entries on unknown pixel format, default values, etc.

请问您能给我一些设置哪些参数的指针吗?
来源是支持RTMP和RTSP的高质量PTZ摄像机.
接收器是V4L2回送设备.

Please could you give me some pointers of which parameters to set?
The source is a high-quality PTZ camera which supports either RTMP and RTSP.
The sink is V4L2 loopback device.

推荐答案

在decodebin

尝试使用GST_DEBUG=3运行管道，这将为您提供有关上限协商失败的更多信息！

Try running your pipeline with GST_DEBUG=3 and that will give you more info on why caps negotiation failed!

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