使用 gstreamer 将 rtsp 流保存为 avi 文件
Save rtsp stream into avi file with gstreamer
我有一个视频服务器，它通过 rtsp 为我提供视频和音频流。我可以使用 gstreamer 工具 gst-launch 和命令看到它：
gst-launch-1.0 uridecodebin uri=rtsp://path/to/source ! autovideosink
现在我需要将该视频流存储到文件中，以便随后在任何流行的视频播放器（VLC、Windows 媒体播放器等）中播放。
我尝试简单地将 autovideosink 替换为 filesink location=file.avi 并添加 -e 选项，就像 answer 中推荐的那样。文件已创建，但我认为它的视频格式不正确（VLC 无法播放）。
我还尝试了最近引用的答案中的命令：
gst-launch-1.0 -e rtspsrc location=rtsp://path/to/source ! decodebin !
x264enc ! mp4mux ! filesink location=file.avi
它给我错误：
ERROR: from element /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstUDPSrc:udpsrc0: Internal data flow error.
Additional debug info:
gstbasesrc.c(2865): gst_base_src_loop (): /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstUDPSrc:udpsrc0:
streaming task paused, reason not-linked (-1)
原因是（如我所想）x264enc ! mp4mux适用于H.264编解码器，但my device works only in MPEG4 part2 mode (MP4V-ES, i.e. H.263). So I need to replace some elements in pipeline to satisfy abilities of my device . But by looking in gstreamer plugins list我找不到适合MP4V-ES（H.263）的编解码器。
现在我的问题是：如何修改 gst-launch 命令以将视频从我稍旧的设备保存到文件中以供进一步播放？
详细命令的完整日志：
gst-launch-1.0 -e -v rtspsrc location=rtsp://192.168.101.44/moxa-cgi/multicaststream_ch1_stream1 ! decodebin ! avenc_mpeg4 ! mp4mux ! filesink location=file.mp4
Setting pipeline to PAUSED ...
Pipeline is live and does not need PREROLL ...
Progress: (open) Opening Stream
Progress: (connect) Connecting to rtsp://192.168.101.44/moxa-cgi/multicaststream_ch1_stream1
Progress: (open) Retrieving server options
Progress: (open) Retrieving media info
Progress: (request) SETUP stream 0
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstRtpBin:manager: latency = 2000
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstRtpBin:manager: ntp-sync = false
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstRtpBin:manager: use-pipeline-clock = false
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstRtpBin:manager: drop-on-latency = false
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstRtpBin:manager: buffer-mode = Slave receiver to sender clock
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstUDPSrc:udpsrc0: timeout = 5000000000
(gst-launch-1.0:9068): GStreamer-WARNING **: gstpad.c:4555:store_sticky_event:<udpsrc1:src> Sticky event misordering, got 'caps' before 'stream-start'
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstUDPSrc:udpsrc1.GstPad:src: caps = application/x-rtcp
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstUDPSrc:udpsrc1.GstPad:src: caps = application/x-rtcp
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstUDPSrc:udpsrc1: caps = application/x-rtcp
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstUDPSink:udpsink0: ttl = 128
Progress: (request) SETUP stream 1
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstUDPSrc:udpsrc2: timeout = 5000000000
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstUDPSrc:udpsrc3.GstPad:src: caps = application/x-rtcp
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstUDPSrc:udpsrc3: caps = application/x-rtcp
(gst-launch-1.0:9068): GStreamer-WARNING **: gstpad.c:4555:store_sticky_event:<udpsrc3:src> Sticky event misordering, got 'caps' before 'stream-start'
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstUDPSrc:udpsrc3.GstPad:src: caps = application/x-rtcp
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstRtpBin:manager.GstGhostPad:recv_rtcp_sink_1.GstProxyPad:proxypad5: caps = application/x-rtcp
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstRtpBin:manager/GstRtpSession:rtpsession1.GstPad:sync_src: caps = application/x-rtcp
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstRtpBin:manager/GstRtpSsrcDemux:rtpssrcdemux1.GstPad:rtcp_sink: caps = application/x-rtcp
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstRtpBin:manager/GstRtpSession:rtpsession1.GstPad:recv_rtcp_sink: caps = application/x-rtcp
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstRtpBin:manager.GstGhostPad:recv_rtcp_sink_1: caps = application/x-rtcp
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstUDPSink:udpsink2: ttl = 128
Progress: (open) Opened Stream
Setting pipeline to PLAYING ...
New clock: GstSystemClock
Progress: (request) Sending PLAY request
Progress: (request) Sending PLAY request
Progress: (request) Sent PLAY request
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstUDPSrc:udpsrc0: timeout = 0
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstUDPSrc:udpsrc2: timeout = 0
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstRtpBin:manager/GstRtpSession:rtpsession0.GstPad:send_rtcp_src: caps = application/x-rtcp
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstRtpBin:manager.GstGhostPad:send_rtcp_src_0: caps = application/x-rtcp
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstUDPSink:udpsink1.GstPad:sink: caps = application/x-rtcp
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstRtpBin:manager.GstGhostPad:send_rtcp_src_0.GstProxyPad:proxypad3: caps = application/x-rtcp
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstRtpBin:manager/GstRtpSession:rtpsession1.GstPad:send_rtcp_src: caps = application/x-rtcp
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstRtpBin:manager.GstGhostPad:send_rtcp_src_1: caps = application/x-rtcp
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstUDPSink:udpsink3.GstPad:sink: caps = application/x-rtcp
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstRtpBin:manager.GstGhostPad:send_rtcp_src_1.GstProxyPad:proxypad6: caps = application/x-rtcp
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstRtpBin:manager.GstGhostPad:recv_rtp_src_1_109102090_0: caps = application/x-rtp, media=(string)audio, payload=(int)0, clock-rate=(int)8000, encoding-name=(string)PCMU, encoding-params=(string)1, a-tool=(string)"MOXA\ 4CH\ Streamming\ Server\ V1.0", a-type=(string)broadcast, x-qt-text-nam=(string)"4CH\ Streaming", x-qt-text-inf=(string)/dev/at2042, clock-base=(uint)2318609, seqnum-base=(uint)26256, npt-start=(guint64)0, play-speed=(double)1, play-scale=(double)1
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0.GstGhostPad:recv_rtp_src_1_109102090_0: caps = application/x-rtp, media=(string)audio, payload=(int)0, clock-rate=(int)8000, encoding-name=(string)PCMU, encoding-params=(string)1, a-tool=(string)"MOXA\ 4CH\ Streamming\ Server\ V1.0", a-type=(string)broadcast, x-qt-text-nam=(string)"4CH\ Streaming", x-qt-text-inf=(string)/dev/at2042, clock-base=(uint)2318609, seqnum-base=(uint)26256, npt-start=(guint64)0, play-speed=(double)1, play-scale=(double)1
/GstPipeline:pipeline0/GstDecodeBin:decodebin0.GstGhostPad:sink.GstProxyPad:proxypad0: caps = application/x-rtp, media=(string)audio, payload=(int)0, clock-rate=(int)8000, encoding-name=(string)PCMU, encoding-params=(string)1, a-tool=(string)"MOXA\ 4CH\ Streamming\ Server\ V1.0", a-type=(string)broadcast, x-qt-text-nam=(string)"4CH\ Streaming", x-qt-text-inf=(string)/dev/at2042, clock-base=(uint)2318609, seqnum-base=(uint)26256, npt-start=(guint64)0, play-speed=(double)1, play-scale=(double)1
/GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstTypeFindElement:typefind.GstPad:src: caps = application/x-rtp, media=(string)audio, payload=(int)0, clock-rate=(int)8000, encoding-name=(string)PCMU, encoding-params=(string)1, a-tool=(string)"MOXA\ 4CH\ Streamming\ Server\ V1.0", a-type=(string)broadcast, x-qt-text-nam=(string)"4CH\ Streaming", x-qt-text-inf=(string)/dev/at2042, clock-base=(uint)2318609, seqnum-base=(uint)26256, npt-start=(guint64)0, play-speed=(double)1, play-scale=(double)1
/GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstTypeFindElement:typefind.GstPad:sink: caps = application/x-rtp, media=(string)audio, payload=(int)0, clock-rate=(int)8000, encoding-name=(string)PCMU, encoding-params=(string)1, a-tool=(string)"MOXA\ 4CH\ Streamming\ Server\ V1.0", a-type=(string)broadcast, x-qt-text-nam=(string)"4CH\ Streaming", x-qt-text-inf=(string)/dev/at2042, clock-base=(uint)2318609, seqnum-base=(uint)26256, npt-start=(guint64)0, play-speed=(double)1, play-scale=(double)1
/GstPipeline:pipeline0/GstDecodeBin:decodebin0.GstGhostPad:sink: caps = application/x-rtp, media=(string)audio, payload=(int)0, clock-rate=(int)8000, encoding-name=(string)PCMU, encoding-params=(string)1, a-tool=(string)"MOXA\ 4CH\ Streamming\ Server\ V1.0", a-type=(string)broadcast, x-qt-text-nam=(string)"4CH\ Streaming", x-qt-text-inf=(string)/dev/at2042, clock-base=(uint)2318609, seqnum-base=(uint)26256, npt-start=(guint64)0, play-speed=(double)1, play-scale=(double)1
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0.GstGhostPad:recv_rtp_src_1_109102090_0.GstProxyPad:proxypad8: caps = application/x-rtp, media=(string)audio, payload=(int)0, clock-rate=(int)8000, encoding-name=(string)PCMU, encoding-params=(string)1, a-tool=(string)"MOXA\ 4CH\ Streamming\ Server\ V1.0", a-type=(string)broadcast, x-qt-text-nam=(string)"4CH\ Streaming", x-qt-text-inf=(string)/dev/at2042, clock-base=(uint)2318609, seqnum-base=(uint)26256, npt-start=(guint64)0, play-speed=(double)1, play-scale=(double)1
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstRtpBin:manager.GstGhostPad:recv_rtp_src_1_109102090_0.GstProxyPad:proxypad7: caps = application/x-rtp, media=(string)audio, payload=(int)0, clock-rate=(int)8000, encoding-name=(string)PCMU, encoding-params=(string)1, a-tool=(string)"MOXA\ 4CH\ Streamming\ Server\ V1.0", a-type=(string)broadcast, x-qt-text-nam=(string)"4CH\ Streaming", x-qt-text-inf=(string)/dev/at2042, clock-base=(uint)2318609, seqnum-base=(uint)26256, npt-start=(guint64)0, play-speed=(double)1, play-scale=(double)1
/GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstRtpPcmuDepay:rtppcmudepay0.GstPad:src: caps = audio/x-mulaw, channels=(int)1, rate=(int)8000
/GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstMuLawDec:mulawdec0.GstPad:sink: caps = audio/x-mulaw, channels=(int)1, rate=(int)8000
/GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstRtpPcmuDepay:rtppcmudepay0.GstPad:sink: caps = application/x-rtp, media=(string)audio, payload=(int)0, clock-rate=(int)8000, encoding-name=(string)PCMU, encoding-params=(string)1, a-tool=(string)"MOXA\ 4CH\ Streamming\ Server\ V1.0", a-type=(string)broadcast, x-qt-text-nam=(string)"4CH\ Streaming", x-qt-text-inf=(string)/dev/at2042, clock-base=(uint)2318609, seqnum-base=(uint)26256, npt-start=(guint64)0, play-speed=(double)1, play-scale=(double)1
/GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstMuLawDec:mulawdec0.GstPad:src: caps = audio/x-raw, format=(string)S16LE, layout=(string)interleaved, rate=(int)8000, channels=(int)1
/GstPipeline:pipeline0/GstDecodeBin:decodebin0.GstDecodePad:src_0.GstProxyPad:proxypad9: caps = audio/x-raw, format=(string)S16LE, layout=(string)interleaved, rate=(int)8000, channels=(int)1
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstRtpBin:manager.GstGhostPad:recv_rtp_src_0_2387976809_96: caps = application/x-rtp, media=(string)video, payload=(int)96, clock-rate=(int)90000, encoding-name=(string)MP4V-ES, profile-level-id=(string)3, config=(string)000001B003000001B50900000100000001200088400668582120A31F, a-tool=(string)"MOXA\ 4CH\ Streamming\ Server\ V1.0", a-type=(string)broadcast, x-qt-text-nam=(string)"4CH\ Streaming", x-qt-text-inf=(string)/dev/at2042, clock-base=(uint)26503772, seqnum-base=(uint)15792, npt-start=(guint64)0, play-speed=(double)1, play-scale=(double)1
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0.GstGhostPad:recv_rtp_src_0_2387976809_96: caps = application/x-rtp, media=(string)video, payload=(int)96, clock-rate=(int)90000, encoding-name=(string)MP4V-ES, profile-level-id=(string)3, config=(string)000001B003000001B50900000100000001200088400668582120A31F, a-tool=(string)"MOXA\ 4CH\ Streamming\ Server\ V1.0", a-type=(string)broadcast, x-qt-text-nam=(string)"4CH\ Streaming", x-qt-text-inf=(string)/dev/at2042, clock-base=(uint)26503772, seqnum-base=(uint)15792, npt-start=(guint64)0, play-speed=(double)1, play-scale=(double)1
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0.GstGhostPad:recv_rtp_src_0_2387976809_96.GstProxyPad:proxypad11: caps = application/x-rtp, media=(string)video, payload=(int)96, clock-rate=(int)90000, encoding-name=(string)MP4V-ES, profile-level-id=(string)3, config=(string)000001B003000001B50900000100000001200088400668582120A31F, a-tool=(string)"MOXA\ 4CH\ Streamming\ Server\ V1.0", a-type=(string)broadcast, x-qt-text-nam=(string)"4CH\ Streaming", x-qt-text-inf=(string)/dev/at2042, clock-base=(uint)26503772, seqnum-base=(uint)15792, npt-start=(guint64)0, play-speed=(double)1, play-scale=(double)1
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstRtpBin:manager.GstGhostPad:recv_rtp_src_0_2387976809_96.GstProxyPad:proxypad10: caps = application/x-rtp, media=(string)video, payload=(int)96, clock-rate=(int)90000, encoding-name=(string)MP4V-ES, profile-level-id=(string)3, config=(string)000001B003000001B50900000100000001200088400668582120A31F, a-tool=(string)"MOXA\ 4CH\ Streamming\ Server\ V1.0", a-type=(string)broadcast, x-qt-text-nam=(string)"4CH\ Streaming", x-qt-text-inf=(string)/dev/at2042, clock-base=(uint)26503772, seqnum-base=(uint)15792, npt-start=(guint64)0, play-speed=(double)1, play-scale=(double)1
ERROR: from element /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstUDPSrc:udpsrc0: Internal data flow error.
Additional debug info:
gstbasesrc.c(2865): gst_base_src_loop (): /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstUDPSrc:udpsrc0:
streaming task paused, reason not-linked (-1)
EOS on shutdown enabled -- waiting for EOS after Error
Waiting for EOS...
Ctrl+C 按下这里。
handling interrupt.
Interrupt: Stopping pipeline ...
Interrupt while waiting for EOS - stopping pipeline...
Execution ended after 0:00:12.942466327
Setting pipeline to PAUSED ...
Setting pipeline to READY ...
Setting pipeline to NULL ...
Freeing pipeline ...
您还可以在 this link.
上查看 "good"（保存到文件有效）与 "bad"（发生错误）的差异
使用 avenc_mpeg4 而不是 x264enc 对我有用。最后的命令是：
gst-launch-1.0 -e rtspsrc location=rtsp://path/to/source ! decodebin ! avenc_mpeg4 ! mp4mux ! filesink location=file.avi
有效。但只有约 10 次的 1 次。其他 9 次我得到与问题相同的错误：
streaming task paused, reason not-linked (-1)
我不知道真正的原因是什么。但我认为这是设备功能。
但是，命令如下：
gst-play-1.0 rtsp://path/to/source
工作稳定，即没有错误。
您的相机似乎正在生成 MPEG4 类型 2 流，您正试图将其封装在 mp4 容器中。因此 x264_enc 尝试将不起作用，因为流类型不兼容。其次，您不能像其他尝试那样使用 AVI 文件类型的 MP4 mux，尽管您可以尝试使用 avimux。从上限谈判中分解出运作良好的流，我们可以将其构造为：
gst-launch-1.0 -v -e rtspsrc location=rtsp://path/to/source ! rtpmp4vdepay ! mpeg4videoparse ! mp4mux ! filesink location=test.mp4
rtpmp4vdepay、mpeg4videoparse 和 mp4mux 通常包含在 decodebin 元素本身中，但这只是为了让我们的生活更轻松，看看发生了什么错了，把元素摆出来总是好的。它使您可以控制正在构建的管道，而不是将其留给上限协商来确定我不推荐用于 IP 摄像机的管道。
我还建议尝试管道（不过要避免 IP 摄像机的 decodebin）：
gst-launch-1.0 -e rtspsrc location=rtsp://path/to/source ! decodebin ! avenc_mpeg4 ! mp4mux ! filesink location=file.mp4
话虽如此，this link 已在原始问题中发布，但在尝试播放流时显示了不同的协商格式。例如，'works' 尝试按照上面工作管道中提到的顺序添加元素，而不工作的尝试通过添加 rtppcmudepay 元素来协商不同的格式。我认为这将取决于使 decodebin 认为有不止一种类型的流可用的相机，decodebin 旨在通过添加不需要的附加元素来解决这些问题。
我有一个视频服务器，它通过 rtsp 为我提供视频和音频流。我可以使用 gstreamer 工具 gst-launch 和命令看到它：
gst-launch-1.0 uridecodebin uri=rtsp://path/to/source ! autovideosink
现在我需要将该视频流存储到文件中，以便随后在任何流行的视频播放器（VLC、Windows 媒体播放器等）中播放。
我尝试简单地将 autovideosink 替换为 filesink location=file.avi 并添加 -e 选项，就像 answer 中推荐的那样。文件已创建，但我认为它的视频格式不正确（VLC 无法播放）。
我还尝试了最近引用的答案中的命令：
gst-launch-1.0 -e rtspsrc location=rtsp://path/to/source ! decodebin ! x264enc ! mp4mux ! filesink location=file.avi
它给我错误：
ERROR: from element /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstUDPSrc:udpsrc0: Internal data flow error. Additional debug info: gstbasesrc.c(2865): gst_base_src_loop (): /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstUDPSrc:udpsrc0: streaming task paused, reason not-linked (-1)
原因是（如我所想）x264enc ! mp4mux适用于H.264编解码器，但my device works only in MPEG4 part2 mode (MP4V-ES, i.e. H.263). So I need to replace some elements in pipeline to satisfy abilities of my device . But by looking in gstreamer plugins list我找不到适合MP4V-ES（H.263）的编解码器。
现在我的问题是：如何修改 gst-launch 命令以将视频从我稍旧的设备保存到文件中以供进一步播放？
详细命令的完整日志：
gst-launch-1.0 -e -v rtspsrc location=rtsp://192.168.101.44/moxa-cgi/multicaststream_ch1_stream1 ! decodebin ! avenc_mpeg4 ! mp4mux ! filesink location=file.mp4
Setting pipeline to PAUSED ... Pipeline is live and does not need PREROLL ... Progress: (open) Opening Stream Progress: (connect) Connecting to rtsp://192.168.101.44/moxa-cgi/multicaststream_ch1_stream1 Progress: (open) Retrieving server options Progress: (open) Retrieving media info Progress: (request) SETUP stream 0 /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstRtpBin:manager: latency = 2000 /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstRtpBin:manager: ntp-sync = false /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstRtpBin:manager: use-pipeline-clock = false /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstRtpBin:manager: drop-on-latency = false /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstRtpBin:manager: buffer-mode = Slave receiver to sender clock /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstUDPSrc:udpsrc0: timeout = 5000000000 (gst-launch-1.0:9068): GStreamer-WARNING **: gstpad.c:4555:store_sticky_event:<udpsrc1:src> Sticky event misordering, got 'caps' before 'stream-start' /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstUDPSrc:udpsrc1.GstPad:src: caps = application/x-rtcp /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstUDPSrc:udpsrc1.GstPad:src: caps = application/x-rtcp /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstUDPSrc:udpsrc1: caps = application/x-rtcp /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstUDPSink:udpsink0: ttl = 128 Progress: (request) SETUP stream 1 /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstUDPSrc:udpsrc2: timeout = 5000000000 /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstUDPSrc:udpsrc3.GstPad:src: caps = application/x-rtcp /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstUDPSrc:udpsrc3: caps = application/x-rtcp (gst-launch-1.0:9068): GStreamer-WARNING **: gstpad.c:4555:store_sticky_event:<udpsrc3:src> Sticky event misordering, got 'caps' before 'stream-start' /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstUDPSrc:udpsrc3.GstPad:src: caps = application/x-rtcp /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstRtpBin:manager.GstGhostPad:recv_rtcp_sink_1.GstProxyPad:proxypad5: caps = application/x-rtcp /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstRtpBin:manager/GstRtpSession:rtpsession1.GstPad:sync_src: caps = application/x-rtcp /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstRtpBin:manager/GstRtpSsrcDemux:rtpssrcdemux1.GstPad:rtcp_sink: caps = application/x-rtcp /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstRtpBin:manager/GstRtpSession:rtpsession1.GstPad:recv_rtcp_sink: caps = application/x-rtcp /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstRtpBin:manager.GstGhostPad:recv_rtcp_sink_1: caps = application/x-rtcp /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstUDPSink:udpsink2: ttl = 128 Progress: (open) Opened Stream Setting pipeline to PLAYING ... New clock: GstSystemClock Progress: (request) Sending PLAY request Progress: (request) Sending PLAY request Progress: (request) Sent PLAY request /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstUDPSrc:udpsrc0: timeout = 0 /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstUDPSrc:udpsrc2: timeout = 0 /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstRtpBin:manager/GstRtpSession:rtpsession0.GstPad:send_rtcp_src: caps = application/x-rtcp /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstRtpBin:manager.GstGhostPad:send_rtcp_src_0: caps = application/x-rtcp /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstUDPSink:udpsink1.GstPad:sink: caps = application/x-rtcp /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstRtpBin:manager.GstGhostPad:send_rtcp_src_0.GstProxyPad:proxypad3: caps = application/x-rtcp /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstRtpBin:manager/GstRtpSession:rtpsession1.GstPad:send_rtcp_src: caps = application/x-rtcp /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstRtpBin:manager.GstGhostPad:send_rtcp_src_1: caps = application/x-rtcp /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstUDPSink:udpsink3.GstPad:sink: caps = application/x-rtcp /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstRtpBin:manager.GstGhostPad:send_rtcp_src_1.GstProxyPad:proxypad6: caps = application/x-rtcp /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstRtpBin:manager.GstGhostPad:recv_rtp_src_1_109102090_0: caps = application/x-rtp, media=(string)audio, payload=(int)0, clock-rate=(int)8000, encoding-name=(string)PCMU, encoding-params=(string)1, a-tool=(string)"MOXA\ 4CH\ Streamming\ Server\ V1.0", a-type=(string)broadcast, x-qt-text-nam=(string)"4CH\ Streaming", x-qt-text-inf=(string)/dev/at2042, clock-base=(uint)2318609, seqnum-base=(uint)26256, npt-start=(guint64)0, play-speed=(double)1, play-scale=(double)1 /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0.GstGhostPad:recv_rtp_src_1_109102090_0: caps = application/x-rtp, media=(string)audio, payload=(int)0, clock-rate=(int)8000, encoding-name=(string)PCMU, encoding-params=(string)1, a-tool=(string)"MOXA\ 4CH\ Streamming\ Server\ V1.0", a-type=(string)broadcast, x-qt-text-nam=(string)"4CH\ Streaming", x-qt-text-inf=(string)/dev/at2042, clock-base=(uint)2318609, seqnum-base=(uint)26256, npt-start=(guint64)0, play-speed=(double)1, play-scale=(double)1 /GstPipeline:pipeline0/GstDecodeBin:decodebin0.GstGhostPad:sink.GstProxyPad:proxypad0: caps = application/x-rtp, media=(string)audio, payload=(int)0, clock-rate=(int)8000, encoding-name=(string)PCMU, encoding-params=(string)1, a-tool=(string)"MOXA\ 4CH\ Streamming\ Server\ V1.0", a-type=(string)broadcast, x-qt-text-nam=(string)"4CH\ Streaming", x-qt-text-inf=(string)/dev/at2042, clock-base=(uint)2318609, seqnum-base=(uint)26256, npt-start=(guint64)0, play-speed=(double)1, play-scale=(double)1 /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstTypeFindElement:typefind.GstPad:src: caps = application/x-rtp, media=(string)audio, payload=(int)0, clock-rate=(int)8000, encoding-name=(string)PCMU, encoding-params=(string)1, a-tool=(string)"MOXA\ 4CH\ Streamming\ Server\ V1.0", a-type=(string)broadcast, x-qt-text-nam=(string)"4CH\ Streaming", x-qt-text-inf=(string)/dev/at2042, clock-base=(uint)2318609, seqnum-base=(uint)26256, npt-start=(guint64)0, play-speed=(double)1, play-scale=(double)1 /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstTypeFindElement:typefind.GstPad:sink: caps = application/x-rtp, media=(string)audio, payload=(int)0, clock-rate=(int)8000, encoding-name=(string)PCMU, encoding-params=(string)1, a-tool=(string)"MOXA\ 4CH\ Streamming\ Server\ V1.0", a-type=(string)broadcast, x-qt-text-nam=(string)"4CH\ Streaming", x-qt-text-inf=(string)/dev/at2042, clock-base=(uint)2318609, seqnum-base=(uint)26256, npt-start=(guint64)0, play-speed=(double)1, play-scale=(double)1 /GstPipeline:pipeline0/GstDecodeBin:decodebin0.GstGhostPad:sink: caps = application/x-rtp, media=(string)audio, payload=(int)0, clock-rate=(int)8000, encoding-name=(string)PCMU, encoding-params=(string)1, a-tool=(string)"MOXA\ 4CH\ Streamming\ Server\ V1.0", a-type=(string)broadcast, x-qt-text-nam=(string)"4CH\ Streaming", x-qt-text-inf=(string)/dev/at2042, clock-base=(uint)2318609, seqnum-base=(uint)26256, npt-start=(guint64)0, play-speed=(double)1, play-scale=(double)1 /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0.GstGhostPad:recv_rtp_src_1_109102090_0.GstProxyPad:proxypad8: caps = application/x-rtp, media=(string)audio, payload=(int)0, clock-rate=(int)8000, encoding-name=(string)PCMU, encoding-params=(string)1, a-tool=(string)"MOXA\ 4CH\ Streamming\ Server\ V1.0", a-type=(string)broadcast, x-qt-text-nam=(string)"4CH\ Streaming", x-qt-text-inf=(string)/dev/at2042, clock-base=(uint)2318609, seqnum-base=(uint)26256, npt-start=(guint64)0, play-speed=(double)1, play-scale=(double)1 /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstRtpBin:manager.GstGhostPad:recv_rtp_src_1_109102090_0.GstProxyPad:proxypad7: caps = application/x-rtp, media=(string)audio, payload=(int)0, clock-rate=(int)8000, encoding-name=(string)PCMU, encoding-params=(string)1, a-tool=(string)"MOXA\ 4CH\ Streamming\ Server\ V1.0", a-type=(string)broadcast, x-qt-text-nam=(string)"4CH\ Streaming", x-qt-text-inf=(string)/dev/at2042, clock-base=(uint)2318609, seqnum-base=(uint)26256, npt-start=(guint64)0, play-speed=(double)1, play-scale=(double)1 /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstRtpPcmuDepay:rtppcmudepay0.GstPad:src: caps = audio/x-mulaw, channels=(int)1, rate=(int)8000 /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstMuLawDec:mulawdec0.GstPad:sink: caps = audio/x-mulaw, channels=(int)1, rate=(int)8000 /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstRtpPcmuDepay:rtppcmudepay0.GstPad:sink: caps = application/x-rtp, media=(string)audio, payload=(int)0, clock-rate=(int)8000, encoding-name=(string)PCMU, encoding-params=(string)1, a-tool=(string)"MOXA\ 4CH\ Streamming\ Server\ V1.0", a-type=(string)broadcast, x-qt-text-nam=(string)"4CH\ Streaming", x-qt-text-inf=(string)/dev/at2042, clock-base=(uint)2318609, seqnum-base=(uint)26256, npt-start=(guint64)0, play-speed=(double)1, play-scale=(double)1 /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstMuLawDec:mulawdec0.GstPad:src: caps = audio/x-raw, format=(string)S16LE, layout=(string)interleaved, rate=(int)8000, channels=(int)1 /GstPipeline:pipeline0/GstDecodeBin:decodebin0.GstDecodePad:src_0.GstProxyPad:proxypad9: caps = audio/x-raw, format=(string)S16LE, layout=(string)interleaved, rate=(int)8000, channels=(int)1 /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstRtpBin:manager.GstGhostPad:recv_rtp_src_0_2387976809_96: caps = application/x-rtp, media=(string)video, payload=(int)96, clock-rate=(int)90000, encoding-name=(string)MP4V-ES, profile-level-id=(string)3, config=(string)000001B003000001B50900000100000001200088400668582120A31F, a-tool=(string)"MOXA\ 4CH\ Streamming\ Server\ V1.0", a-type=(string)broadcast, x-qt-text-nam=(string)"4CH\ Streaming", x-qt-text-inf=(string)/dev/at2042, clock-base=(uint)26503772, seqnum-base=(uint)15792, npt-start=(guint64)0, play-speed=(double)1, play-scale=(double)1 /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0.GstGhostPad:recv_rtp_src_0_2387976809_96: caps = application/x-rtp, media=(string)video, payload=(int)96, clock-rate=(int)90000, encoding-name=(string)MP4V-ES, profile-level-id=(string)3, config=(string)000001B003000001B50900000100000001200088400668582120A31F, a-tool=(string)"MOXA\ 4CH\ Streamming\ Server\ V1.0", a-type=(string)broadcast, x-qt-text-nam=(string)"4CH\ Streaming", x-qt-text-inf=(string)/dev/at2042, clock-base=(uint)26503772, seqnum-base=(uint)15792, npt-start=(guint64)0, play-speed=(double)1, play-scale=(double)1 /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0.GstGhostPad:recv_rtp_src_0_2387976809_96.GstProxyPad:proxypad11: caps = application/x-rtp, media=(string)video, payload=(int)96, clock-rate=(int)90000, encoding-name=(string)MP4V-ES, profile-level-id=(string)3, config=(string)000001B003000001B50900000100000001200088400668582120A31F, a-tool=(string)"MOXA\ 4CH\ Streamming\ Server\ V1.0", a-type=(string)broadcast, x-qt-text-nam=(string)"4CH\ Streaming", x-qt-text-inf=(string)/dev/at2042, clock-base=(uint)26503772, seqnum-base=(uint)15792, npt-start=(guint64)0, play-speed=(double)1, play-scale=(double)1 /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstRtpBin:manager.GstGhostPad:recv_rtp_src_0_2387976809_96.GstProxyPad:proxypad10: caps = application/x-rtp, media=(string)video, payload=(int)96, clock-rate=(int)90000, encoding-name=(string)MP4V-ES, profile-level-id=(string)3, config=(string)000001B003000001B50900000100000001200088400668582120A31F, a-tool=(string)"MOXA\ 4CH\ Streamming\ Server\ V1.0", a-type=(string)broadcast, x-qt-text-nam=(string)"4CH\ Streaming", x-qt-text-inf=(string)/dev/at2042, clock-base=(uint)26503772, seqnum-base=(uint)15792, npt-start=(guint64)0, play-speed=(double)1, play-scale=(double)1 ERROR: from element /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstUDPSrc:udpsrc0: Internal data flow error. Additional debug info: gstbasesrc.c(2865): gst_base_src_loop (): /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstUDPSrc:udpsrc0: streaming task paused, reason not-linked (-1) EOS on shutdown enabled -- waiting for EOS after Error Waiting for EOS...
Ctrl+C 按下这里。
handling interrupt. Interrupt: Stopping pipeline ... Interrupt while waiting for EOS - stopping pipeline... Execution ended after 0:00:12.942466327 Setting pipeline to PAUSED ... Setting pipeline to READY ... Setting pipeline to NULL ... Freeing pipeline ...
您还可以在 this link.
上查看 "good"（保存到文件有效）与 "bad"（发生错误）的差异使用 avenc_mpeg4 而不是 x264enc 对我有用。最后的命令是：
gst-launch-1.0 -e rtspsrc location=rtsp://path/to/source ! decodebin ! avenc_mpeg4 ! mp4mux ! filesink location=file.avi
有效。但只有约 10 次的 1 次。其他 9 次我得到与问题相同的错误：
streaming task paused, reason not-linked (-1)
我不知道真正的原因是什么。但我认为这是设备功能。
但是，命令如下：
gst-play-1.0 rtsp://path/to/source
工作稳定，即没有错误。
您的相机似乎正在生成 MPEG4 类型 2 流，您正试图将其封装在 mp4 容器中。因此 x264_enc 尝试将不起作用，因为流类型不兼容。其次，您不能像其他尝试那样使用 AVI 文件类型的 MP4 mux，尽管您可以尝试使用 avimux。从上限谈判中分解出运作良好的流，我们可以将其构造为：
gst-launch-1.0 -v -e rtspsrc location=rtsp://path/to/source ! rtpmp4vdepay ! mpeg4videoparse ! mp4mux ! filesink location=test.mp4
rtpmp4vdepay、mpeg4videoparse 和 mp4mux 通常包含在 decodebin 元素本身中，但这只是为了让我们的生活更轻松，看看发生了什么错了，把元素摆出来总是好的。它使您可以控制正在构建的管道，而不是将其留给上限协商来确定我不推荐用于 IP 摄像机的管道。
我还建议尝试管道（不过要避免 IP 摄像机的 decodebin）：
gst-launch-1.0 -e rtspsrc location=rtsp://path/to/source ! decodebin ! avenc_mpeg4 ! mp4mux ! filesink location=file.mp4
话虽如此，this link 已在原始问题中发布，但在尝试播放流时显示了不同的协商格式。例如，'works' 尝试按照上面工作管道中提到的顺序添加元素，而不工作的尝试通过添加 rtppcmudepay 元素来协商不同的格式。我认为这将取决于使 decodebin 认为有不止一种类型的流可用的相机，decodebin 旨在通过添加不需要的附加元素来解决这些问题。