Question

我尝试使用RTSP从无线摄像头接收实时H264流。摄像机IP为192.168.150.1，并且不需要验证。

由于我在Windows下开发，我安装了Gstreamer 1.0 - 1.8.3，这是一个完整的安装，包含所有插件以及在安装过程中选择的所有内容。

当我尝试管道时

gst-launch-1.0 rtspsrc location="rtsp://192.168.150.1" latency=100 ! rtph264depay ! avdec_h264 ! autovideosink

我收到了这个输出：

Setting pipeline to PAUSED ...
Pipeline is live and does not need PREROLL ...
Progress: (open) Opening Stream
Progress: (connect) Connecting to rtsp://192.168.150.1
Progress: (open) Retrieving server options
Progress: (open) Retrieving media info
ERROR: from element /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0: No supported stream was found. You might need to allow more transport protocols or may otherwise be missing the right GStreamer RTSP extension plugin.
Additional debug info:
gstrtspsrc.c(6421): gst_rtspsrc_setup_streams (): /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0
ERROR: pipeline doesn't want to preroll.
Setting pipeline to PAUSED ...
Setting pipeline to READY ...
Setting pipeline to NULL ...
Freeing pipeline ...

我也尝试了以下命令：

gst-play-1.0 rtsp://192.168.150.1

获得此输出：

Interactive keyboard handling in terminal not available.
Now playing rtsp://192.168.150.1
Pipeline is live.
ERROR Your GStreamer installation is missing a plug-in. for rtsp://192.168.150.1
ERROR debug information: gsturidecodebin.c(1006): no_more_pads_full (): /GstPlayBin:playbin/GstURIDecodeBin:uridecodebin0:
no suitable plugins found:
gstrtspsrc.c(6421): gst_rtspsrc_setup_streams (): /GstPlayBin:playbin/GstURIDecodeBin:uridecodebin0/GstRTSPSrc:source
Reached end of play list.

当我在VLC中尝试相同的URL（rtsp：//192.168.150.1）时，我可以看到流。所以我的猜测是我错过了＃34;正确的GStreamer RTSP扩展插件＆＃34;

inspect-1.0 | grep 264的输出是：

File STDIN:
x264:  x264enc: x264enc
videoparsersbad:  h264parse: H.264 parser
typefindfunctions: video/x-h264: h264, x264, 264
rtp:  rtph264depay: RTP H264 depayloader
rtp:  rtph264pay: RTP H264 payloader
openh264:  openh264dec: OpenH264 video decoder
openh264:  openh264enc: OpenH264 video encoder
libav:  avdec_h264: libav H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 decoder
libav:  avmux_ipod: libav iPod H.264 MP4 (MPEG-4 Part 14) muxer

我也试过使用FFmpeg，我可以看到视频，但我更喜欢使用Gstreamer，因为我将在Android设备上使用相同的配置（相机，管道，gstreamer库...），以及我认为Gstreamer似乎是最好的选择。

从FFmpeg我得到了关于流的信息

Stream #0:0: Video: h264 (Constrained Baseline), yuv420p, 640x352, 29.92 tbr, 90k tbn, 180k tbc

有没有人有一些建议可以解决这个问题？我错过了哪个插件？我怎样才能添加我的安装？

修改 gst-launch-1.0.exe -v playbin uri=rtsp://192.168.150.1

的输出

Setting pipeline to PAUSED ...
/GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0: ring-buffer-max-size = 0
/GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0: buffer-size = -1
/GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0: buffer-duration = -1
/GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0: use-buffering = false
/GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0: download = false
/GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0: uri = rtsp://192.168.150.1
/GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0: connection-speed = 0
/GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0: source = "\(GstRTSPSrc\)\ source"
Pipeline is live and does not need PREROLL ...
Progress: (open) Opening Stream
Progress: (connect) Connecting to rtsp://192.168.150.1
Progress: (open) Retrieving server options
Progress: (open) Retrieving media info
ERROR: from element /GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0: Your GStreamer installation is missing a plug-in.
Additional debug info:
gsturidecodebin.c(1006): no_more_pads_full (): /GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0:
no suitable plugins found:
gstrtspsrc.c(6421): gst_rtspsrc_setup_streams (): /GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0/GstRTSPSrc:source
ERROR: pipeline doesn't want to preroll.
Setting pipeline to PAUSED ...
Setting pipeline to READY ...
Setting pipeline to NULL ...
Freeing pipeline ...

Answer 1

我与GStreamer / 1.8.3完全相同。

原因是我的相机没有在其会话描述中提供"Control URL"属性，而GStreamer在这种情况下不够智能回到基本URL（就像其他玩家一样）。

所以，我运行以下命令从GStreamer获取详细日志：

gst-play-1.0 rtsp://camera_ip:port/ --gst-debug-level=9 --gst-debug-no-color &> GSTREAMER_LOGS.txt

在日志中我找到了这一行：

DEBUG  rtspsrc gstrtspsrc.c:6109:gst_rtspsrc_setup_streams:<source> skipping stream 0x7f01b402c140, no setup

然后查看来自Kurento的gst-plugins-good软件包的当前gstrtspsrc.c代码，我发现“跳过流...，没有设置”错误只发生在stream->conninfo.location == NULL。正如我所说的那样，因为我的相机没有在SDP中提供“控制URL”属性。将以下行添加到我的相机SDP会话描述为我解决了这个问题：

a=control:*

但是，通常，这可能需要在GStreamer代码中修复。

Answer 2

我认为这是GStreamer的限制，VLC和ffmpeg并没有共享。我有类似的情况，我有三个不同的RTSP相机，两个可以与GStreamer一起使用，另一个不用。所有三个都可以使用VLC和ffmpeg。

我使用Wireshark查看原始RTSP协议，发现使用GStreamer的两个摄像头包括一个sprop-parameter-sets参数字段，而那个没有工作的摄像头没有这个字段。

以sprop-parameter-sets（SPS和PPS数据）编码的信息通常存在于来自摄像机的RTP流中。显然VLC和ffmpeg很聪明，可以选择这个，但GStreamer不是。

我尝试使用caps命令行参数手动插入sprop-parameter-sets数据，但是没有成功。

Rtsp h264缺少插件

2 个答案: