Video streaming 使用gstreamer将本地mpeg ts文件流式传输到udp

我需要使用gstreamer广播mpeg-ts视频文件，而无需对其进行转码。视频编码为：H264-MPEG-4 AVC（第10部分）（H264）

我试着与你交流

gst-launch-1.0 filesrc location=my_video.ts ! h264parse ! rtph264pay ! udpsink host=127.0.0.1 port=49444

玩

gst-launch-1.0 udpsrc caps=" application/x-rtp,media=(string)video,clock-rate=(int)90000,encoding-name=(string)H264,payload=(int)96,ssrc=(uint)2674837201,clock-base=(uint)2959668548,seqnum-base=(uint)14300" port=49444 ! rtph264depay ! decodebin ! autovideosink

但我在接收器一侧的视频已损坏（但仍有点类似于原始视频）：

而且在接收器控制台中有很多警告：

WARNING: from element /GstPipeline:pipeline0/GstRtpH264Depay:rtph264depay0: Could not decode stream.
Additional debug info:
gstrtph264depay.c(1205): gst_rtp_h264_depay_process (): /GstPipeline:pipeline0/GstRtpH264Depay:rtph264depay0:
Undefined packet type

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我做错了什么？我猜问题出在

udpsrc

元素的

caps

参数中，因为我刚刚从web上的某个示例复制粘贴了它。如果这是问题所在，我如何才能找到

caps

参数的正确值？

您不能直接从ts文件转到h264parse，您需要首先对ts流进行解复用-这是通过tsdemux完成的

这是神奇的烟斗：

gst-launch-1.0 filesrc location=dummy_h264.ts ! tsparse set-timestamps=true ! video/mpegts ! tsdemux ! video/x-h264 ! h264parse disable-passthrough=true ! rtph264pay ! udpsink -v host=127.0.0.1 port=9999

如果没有tsparse set timestamp，它可能无法工作，因为时间戳信息可能不存在于ts文件中-您必须检查是否存在正确的PCR帧-可能使用一些mpeg ts分析器

和调试输出-您可以从谈论udpsink的行中取大写：

Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
/GstPipeline:pipeline0/MpegTSParse2:mpegtsparse2-0.GstPad:src: caps = "video/mpegts\,\ systemstream\=\(boolean\)true\,\ packetsize\=\(int\)188"
/GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:src: caps = "video/mpegts\,\ systemstream\=\(boolean\)true\,\ packetsize\=\(int\)188"
/GstPipeline:pipeline0/GstTSDemux:tsdemux0.GstPad:sink: caps = "video/mpegts\,\ systemstream\=\(boolean\)true\,\ packetsize\=\(int\)188"
/GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:sink: caps = "video/mpegts\,\ systemstream\=\(boolean\)true\,\ packetsize\=\(int\)188"
/GstPipeline:pipeline0/GstCapsFilter:capsfilter2: caps = video/x-h264
/GstPipeline:pipeline0/GstCapsFilter:capsfilter2.GstPad:src: caps = "video/x-h264\,\ stream-format\=\(string\)byte-stream\,\ alignment\=\(string\)nal"
/GstPipeline:pipeline0/GstH264Parse:h264parse0.GstPad:sink: caps = "video/x-h264\,\ stream-format\=\(string\)byte-stream\,\ alignment\=\(string\)nal"
/GstPipeline:pipeline0/GstCapsFilter:capsfilter2.GstPad:sink: caps = "video/x-h264\,\ stream-format\=\(string\)byte-stream\,\ alignment\=\(string\)nal"
/GstPipeline:pipeline0/GstH264Parse:h264parse0.GstPad:src: caps = "video/x-h264\,\ stream-format\=\(string\)avc\,\ alignment\=\(string\)au\,\ pixel-aspect-ratio\=\(fraction\)1/1\,\ width\=\(int\)320\,\ height\=\(int\)240\,\ framerate\=\(fraction\)30/1\,\ parsed\=\(boolean\)true\,\ profile\=\(string\)high\,\ level\=\(string\)2\,\ codec_data\=\(buffer\)01640014ffe1001967640014acd94141fb0110000003001000000303c8f142996001000568ebecb22c"
/GstPipeline:pipeline0/GstRtpH264Pay:rtph264pay0.GstPad:src: caps = "application/x-rtp\,\ media\=\(string\)video\,\ clock-rate\=\(int\)90000\,\ encoding-name\=\(string\)H264\,\ packetization-mode\=\(string\)1\,\ profile-level-id\=\(string\)640014\,\ sprop-parameter-sets\=\(string\)\"Z2QAFKzZQUH7ARAAAAMAEAAAAwPI8UKZYA\\\=\\\=\\\,aOvssiw\\\=\"\,\ payload\=\(int\)96\,\ ssrc\=\(uint\)3030226714\,\ timestamp-offset\=\(uint\)3947899684\,\ seqnum-offset\=\(uint\)32736"
------------TAKE THIS ONE:--------------
/GstPipeline:pipeline0/GstUDPSink:udpsink0.GstPad:sink: caps = "application/x-rtp\,\ media\=\(string\)video\,\ clock-rate\=\(int\)90000\,\ encoding-name\=\(string\)H264\,\ packetization-mode\=\(string\)1\,\ profile-level-id\=\(string\)640014\,\ sprop-parameter-sets\=\(string\)\"Z2QAFKzZQUH7ARAAAAMAEAAAAwPI8UKZYA\\\=\\\=\\\,aOvssiw\\\=\"\,\ payload\=\(int\)96\,\ ssrc\=\(uint\)3030226714\,\ timestamp-offset\=\(uint\)3947899684\,\ seqnum-offset\=\(uint\)32736"
/GstPipeline:pipeline0/GstRtpH264Pay:rtph264pay0.GstPad:sink: caps = "video/x-h264\,\ stream-format\=\(string\)avc\,\ alignment\=\(string\)au\,\ pixel-aspect-ratio\=\(fraction\)1/1\,\ width\=\(int\)320\,\ height\=\(int\)240\,\ framerate\=\(fraction\)30/1\,\ parsed\=\(boolean\)true\,\ profile\=\(string\)high\,\ level\=\(string\)2\,\ codec_data\=\(buffer\)01640014ffe1001967640014acd94141fb0110000003001000000303c8f142996001000568ebecb22c"
/GstPipeline:pipeline0/GstRtpH264Pay:rtph264pay0: timestamp = 3947910934
/GstPipeline:pipeline0/GstRtpH264Pay:rtph264pay0: seqnum = 32736
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
^Chandling interrupt.
Interrupt: Stopping pipeline ...
Execution ended after 0:00:03.631302966
Setting pipeline to PAUSED ...
Setting pipeline to READY ...
Setting pipeline to NULL ...
Freeing pipeline ...

然后像这样玩：

gst-launch-1.0 udpsrc port=9999 ! application/x-rtp\,\ media\=\... ! queue ! rtph264depay ! decodebin ! videoconvert ! glimagesink

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请注意，您不必添加“它已经逃走了

非常感谢！你的魔术管很管用！然而，我在收到的视频上出现了一些小故障，直到我在播放器的队列中添加了

队列

元素pipeline@Paboka好的，我编辑了答案。。在有意义的地方到处排队是件好事。。但我认为decodebin已经在内部使用了一些队列。。