У меня есть видеосервер, который дает мне видео и аудио потоки по rtsp. Я вижу это с помощью инструмента gstreamer gst-launch
с командой:
gst-launch-1.0 uridecodebin uri=rtsp://path/to/source ! autovideosink
Теперь мне нужно сохранить этот видеопоток в файл для последующего воспроизведения в любом популярном видеоплеере (VLC, Windows Media Player и т. д.).
Я попытался просто заменить autovideosink
на filesink location=file.avi
и добавить параметр -e
, как рекомендовано в этом ответе. Файл создан, но я думаю, что он не в правильном формате видео (VLC не может его воспроизвести).
Также я попробовал команду из недавно упомянутого ответа:
gst-launch-1.0 -e rtspsrc location=rtsp://path/to/source ! decodebin ! x264enc ! mp4mux ! filesink location=file.avi
Это дает мне ошибку:
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)
Причина в том (как я думаю) x264enc ! mp4mux
для кодека H.264, но моё устройство работает только в режиме MPEG4 part2 (MP4V-ES, т.е. H.263). Поэтому мне нужно заменить некоторые элементы в конвейере, чтобы удовлетворить возможности моего устройства. Но, просмотрев список плагинов gstreamer, я не нашел ни одного подходящего для MP4V-ES. (Н.263).
А теперь мой вопрос: как изменить команду gst-launch, чтобы сохранить видео с моего немного старого устройства в файл для дальнейшего воспроизведения?
Полный журнал для команды с подробностями:
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...
Здесь нажата Ctrl+C.
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 ...
Также вы можете посмотреть разницу между «хорошо» (сохранение в файл работает) и «плохо» (произошла ошибка) на эта ссылка.