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複数の rtp h264 ペイロード ビデオ ストリームを 15FPS の単一のビデオ ストリームに混合しようとしています。

15FPS の videotestsource パターンで 2 つのビデオ ストリームを混合する作業中のパイプライン

VIDEO_CAPS="application/x-rtp,media=(string)video,clock-rate=(int)90000,encoding-name=(string)H264"

gst-launch -vvvve videomixer2 name=mix ! ffmpegcolorspace ! xvimagesink  

udpsrc caps=$VIDEO_CAPS port=3030 ! .recv_rtp_sink_0 gstrtpbin ! rtph264depay ! ffdec_h264  ! videoscale ! video/x-raw-yuv , width=176, height=144 ! videobox top=0 left=0 ! video/x-raw-yuv,format=\(fourcc\)AYUV ! ffmpegcolorspace !  mix.  

udpsrc caps=$VIDEO_CAPS port=6666 ! .recv_rtp_sink_0 gstrtpbin ! rtph264depay ! ffdec_h264  ! videoscale ! video/x-raw-yuv , width=176, height=144 ! videobox top=0 left=-178 ! video/x-raw-yuv,format=\(fourcc\)AYUV ! ffmpegcolorspace !  mix. 

videotestsrc ! video/x-raw-yuv, framerate=15/1, width=640, height=360 ! mix.

上記のパイプラインには、奇妙な問題があります。ミックスしようとすると、最初のビデオ ソースが空白になります (最初のビデオ ソースのストリーミングがまだ行われていることは確かですが、それは発生しません。むしろ、2 番目のビデオ ストリームは詳細を以下に示します。

上記のパイプラインの詳細

/GstPipeline:pipeline0/GstVideoTestSrc:videotestsrc0.GstPad:src: caps = video/x-raw-yuv, format=(fourcc)AYUV, width=(int)640, height=(int)360, framerate=(fraction)15/1, pixel-aspect-ratio=(fraction)1/1, color-matrix=(string)sdtv
Pipeline is live and does not need PREROLL ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
/GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:src: caps = video/x-raw-yuv, format=(fourcc)AYUV, width=(int)640, height=(int)360, framerate=(fraction)15/1, pixel-aspect-ratio=(fraction)1/1, color-matrix=(string)sdtv
/GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:sink: caps = video/x-raw-yuv, format=(fourcc)AYUV, width=(int)640, height=(int)360, framerate=(fraction)15/1, pixel-aspect-ratio=(fraction)1/1, color-matrix=(string)sdtv
/GstPipeline:pipeline0/GstVideoMixer2:mix.GstPad:src: caps = video/x-raw-yuv, format=(fourcc)AYUV, width=(int)640, height=(int)360, framerate=(fraction)15/1, pixel-aspect-ratio=(fraction)1/1
/GstPipeline:pipeline0/GstVideoMixer2:mix.GstVideoMixer2Pad:sink_0: caps = video/x-raw-yuv, format=(fourcc)AYUV, width=(int)640, height=(int)360, framerate=(fraction)15/1, pixel-aspect-ratio=(fraction)1/1, color-matrix=(string)sdtv
/GstPipeline:pipeline0/GstRtpBin:rtpbin0/GstRtpSession:rtpsession0.GstPad:recv_rtp_sink: caps = application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264
/GstPipeline:pipeline0/GstRtpBin:rtpbin0.GstGhostPad:recv_rtp_sink_0: caps = application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264
/GstPipeline:pipeline0/GstRtpBin:rtpbin0.GstGhostPad:recv_rtp_sink_0.GstProxyPad:proxypad0: caps = application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264
/GstPipeline:pipeline0/GstRtpBin:rtpbin0/GstRtpSession:rtpsession0.GstPad:recv_rtp_src: caps = application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264
/GstPipeline:pipeline0/GstRtpBin:rtpbin0/GstRtpSsrcDemux:rtpssrcdemux0.GstPad:sink: caps = application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264
/GstPipeline:pipeline0/GstRtpBin:rtpbin0/GstRtpJitterBuffer:rtpjitterbuffer0.GstPad:src: caps = application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264
/GstPipeline:pipeline0/GstRtpBin:rtpbin0/GstRtpJitterBuffer:rtpjitterbuffer0.GstPad:sink: caps = application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264
/GstPipeline:pipeline0/GstRtpBin:rtpbin1/GstRtpSession:rtpsession1.GstPad:recv_rtp_sink: caps = application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264
/GstPipeline:pipeline0/GstRtpBin:rtpbin1.GstGhostPad:recv_rtp_sink_0: caps = application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264
/GstPipeline:pipeline0/GstRtpBin:rtpbin1.GstGhostPad:recv_rtp_sink_0.GstProxyPad:proxypad1: caps = application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264
/GstPipeline:pipeline0/GstRtpBin:rtpbin1/GstRtpSession:rtpsession1.GstPad:recv_rtp_src: caps = application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264
/GstPipeline:pipeline0/GstRtpBin:rtpbin1/GstRtpSsrcDemux:rtpssrcdemux1.GstPad:sink: caps = application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264
/GstPipeline:pipeline0/GstRtpBin:rtpbin1/GstRtpJitterBuffer:rtpjitterbuffer1.GstPad:src: caps = application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264
/GstPipeline:pipeline0/GstRtpBin:rtpbin1/GstRtpJitterBuffer:rtpjitterbuffer1.GstPad:sink: caps = application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264
/GstPipeline:pipeline0/GstRtpBin:rtpbin0/GstRtpPtDemux:rtpptdemux0.GstPad:sink: caps = application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264
/GstPipeline:pipeline0/GstRtpH264Depay:rtph264depay0.GstPad:src: caps = video/x-h264, stream-format=(string)byte-stream, alignment=(string)nal
/GstPipeline:pipeline0/GstRtpH264Depay:rtph264depay0.GstPad:sink: caps = application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264, payload=(int)99
/GstPipeline:pipeline0/GstRtpBin:rtpbin0.GstGhostPad:recv_rtp_src_0_4186542290_99.GstProxyPad:proxypad2: caps = application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264, payload=(int)99
/GstPipeline:pipeline0/ffdec_h264:ffdec_h2640.GstPad:sink: caps = video/x-h264, stream-format=(string)byte-stream, alignment=(string)nal
/GstPipeline:pipeline0/GstRtpBin:rtpbin1/GstRtpPtDemux:rtpptdemux1.GstPad:sink: caps = application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264
/GstPipeline:pipeline0/GstRtpH264Depay:rtph264depay1.GstPad:src: caps = video/x-h264, stream-format=(string)byte-stream, alignment=(string)nal
/GstPipeline:pipeline0/GstRtpH264Depay:rtph264depay1.GstPad:sink: caps = application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264, payload=(int)99
/GstPipeline:pipeline0/GstRtpBin:rtpbin1.GstGhostPad:recv_rtp_src_0_4186622237_99.GstProxyPad:proxypad3: caps = application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264, payload=(int)99
/GstPipeline:pipeline0/ffdec_h264:ffdec_h2641.GstPad:sink: caps = video/x-h264, stream-format=(string)byte-stream, alignment=(string)nal
/GstPipeline:pipeline0/ffdec_h264:ffdec_h2640.GstPad:src: caps = video/x-raw-yuv, width=(int)176, height=(int)144, framerate=(fraction)15/1, format=(fourcc)I420, interlaced=(boolean)false
/GstPipeline:pipeline0/GstVideoScale:videoscale0.GstPad:src: caps = video/x-raw-yuv, width=(int)176, height=(int)144, framerate=(fraction)15/1, format=(fourcc)I420, interlaced=(boolean)false
/GstPipeline:pipeline0/GstVideoScale:videoscale0.GstPad:sink: caps = video/x-raw-yuv, width=(int)176, height=(int)144, framerate=(fraction)15/1, format=(fourcc)I420, interlaced=(boolean)false
/GstPipeline:pipeline0/GstCapsFilter:capsfilter1.GstPad:src: caps = video/x-raw-yuv, width=(int)176, height=(int)144, framerate=(fraction)15/1, format=(fourcc)I420, interlaced=(boolean)false
/GstPipeline:pipeline0/GstCapsFilter:capsfilter1.GstPad:sink: caps = video/x-raw-yuv, width=(int)176, height=(int)144, framerate=(fraction)15/1, format=(fourcc)I420, interlaced=(boolean)false
/GstPipeline:pipeline0/GstVideoBox:videobox0.GstPad:src: caps = video/x-raw-yuv, format=(fourcc)AYUV, width=(int)176, height=(int)144, framerate=(fraction)15/1, pixel-aspect-ratio=(fraction)1/1, interlaced=(boolean)false
/GstPipeline:pipeline0/GstVideoBox:videobox0.GstPad:sink: caps = video/x-raw-yuv, width=(int)176, height=(int)144, framerate=(fraction)15/1, format=(fourcc)I420, interlaced=(boolean)false
/GstPipeline:pipeline0/GstCapsFilter:capsfilter2.GstPad:src: caps = video/x-raw-yuv, format=(fourcc)AYUV, width=(int)176, height=(int)144, framerate=(fraction)15/1, pixel-aspect-ratio=(fraction)1/1, interlaced=(boolean)false
/GstPipeline:pipeline0/GstCapsFilter:capsfilter2.GstPad:sink: caps = video/x-raw-yuv, format=(fourcc)AYUV, width=(int)176, height=(int)144, framerate=(fraction)15/1, pixel-aspect-ratio=(fraction)1/1, interlaced=(boolean)false
/GstPipeline:pipeline0/GstFFMpegCsp:ffmpegcsp1.GstPad:src: caps = video/x-raw-yuv, format=(fourcc)AYUV, width=(int)176, height=(int)144, framerate=(fraction)15/1, pixel-aspect-ratio=(fraction)1/1, interlaced=(boolean)false
/GstPipeline:pipeline0/GstFFMpegCsp:ffmpegcsp1.GstPad:sink: caps = video/x-raw-yuv, format=(fourcc)AYUV, width=(int)176, height=(int)144, framerate=(fraction)15/1, pixel-aspect-ratio=(fraction)1/1, interlaced=(boolean)false
/GstPipeline:pipeline0/GstVideoMixer2:mix.GstVideoMixer2Pad:sink_1: caps = video/x-raw-yuv, format=(fourcc)AYUV, width=(int)176, height=(int)144, framerate=(fraction)15/1, pixel-aspect-ratio=(fraction)1/1, interlaced=(boolean)false
/GstPipeline:pipeline0/ffdec_h264:ffdec_h2641.GstPad:src: caps = video/x-raw-yuv, width=(int)176, height=(int)144, framerate=(fraction)15/1, format=(fourcc)I420, interlaced=(boolean)false
/GstPipeline:pipeline0/GstVideoScale:videoscale1.GstPad:src: caps = video/x-raw-yuv, width=(int)176, height=(int)144, framerate=(fraction)15/1, format=(fourcc)I420, interlaced=(boolean)false
/GstPipeline:pipeline0/GstVideoScale:videoscale1.GstPad:sink: caps = video/x-raw-yuv, width=(int)176, height=(int)144, framerate=(fraction)15/1, format=(fourcc)I420, interlaced=(boolean)false
/GstPipeline:pipeline0/GstCapsFilter:capsfilter3.GstPad:src: caps = video/x-raw-yuv, width=(int)176, height=(int)144, framerate=(fraction)15/1, format=(fourcc)I420, interlaced=(boolean)false
/GstPipeline:pipeline0/GstCapsFilter:capsfilter3.GstPad:sink: caps = video/x-raw-yuv, width=(int)176, height=(int)144, framerate=(fraction)15/1, format=(fourcc)I420, interlaced=(boolean)false
/GstPipeline:pipeline0/GstVideoBox:videobox1.GstPad:src: caps = video/x-raw-yuv, format=(fourcc)AYUV, width=(int)354, height=(int)144, framerate=(fraction)15/1, pixel-aspect-ratio=(fraction)1/1, interlaced=(boolean)false
/GstPipeline:pipeline0/GstVideoBox:videobox1.GstPad:sink: caps = video/x-raw-yuv, width=(int)176, height=(int)144, framerate=(fraction)15/1, format=(fourcc)I420, interlaced=(boolean)false
/GstPipeline:pipeline0/GstCapsFilter:capsfilter4.GstPad:src: caps = video/x-raw-yuv, format=(fourcc)AYUV, width=(int)354, height=(int)144, framerate=(fraction)15/1, pixel-aspect-ratio=(fraction)1/1, interlaced=(boolean)false
/GstPipeline:pipeline0/GstCapsFilter:capsfilter4.GstPad:sink: caps = video/x-raw-yuv, format=(fourcc)AYUV, width=(int)354, height=(int)144, framerate=(fraction)15/1, pixel-aspect-ratio=(fraction)1/1, interlaced=(boolean)false
/GstPipeline:pipeline0/GstFFMpegCsp:ffmpegcsp2.GstPad:src: caps = video/x-raw-yuv, format=(fourcc)AYUV, width=(int)354, height=(int)144, framerate=(fraction)15/1, pixel-aspect-ratio=(fraction)1/1, interlaced=(boolean)false
/GstPipeline:pipeline0/GstFFMpegCsp:ffmpegcsp2.GstPad:sink: caps = video/x-raw-yuv, format=(fourcc)AYUV, width=(int)354, height=(int)144, framerate=(fraction)15/1, pixel-aspect-ratio=(fraction)1/1, interlaced=(boolean)false
/GstPipeline:pipeline0/GstVideoMixer2:mix.GstVideoMixer2Pad:sink_2: caps = video/x-raw-yuv, format=(fourcc)AYUV, width=(int)354, height=(int)144, framerate=(fraction)15/1, pixel-aspect-ratio=(fraction)1/1, interlaced=(boolean)false
/GstPipeline:pipeline0/GstFFMpegCsp:ffmpegcsp0.GstPad:src: caps = video/x-raw-yuv, format=(fourcc)YUY2, width=(int)640, height=(int)360, framerate=(fraction)15/1, pixel-aspect-ratio=(fraction)1/1
/GstPipeline:pipeline0/GstFFMpegCsp:ffmpegcsp0.GstPad:sink: caps = video/x-raw-yuv, format=(fourcc)AYUV, width=(int)640, height=(int)360, framerate=(fraction)15/1, pixel-aspect-ratio=(fraction)1/1
/GstPipeline:pipeline0/GstXvImageSink:xvimagesink0.GstPad:sink: caps = video/x-raw-yuv, format=(fourcc)YUY2, width=(int)640, height=(int)360, framerate=(fraction)15/1, pixel-aspect-ratio=(fraction)1/1
WARNING: from element /GstPipeline:pipeline0/GstXvImageSink:xvimagesink0: A lot of buffers are being dropped.
Additional debug info:
gstbasesink.c(2875): gst_base_sink_is_too_late (): /GstPipeline:pipeline0/GstXvImageSink:xvimagesink0:
There may be a timestamping problem, or this computer is too slow.

最初のビデオ ストリームが見つかりません 最初のビデオ ストリーム

私はそれがビデオボックスと何か関係があると強く疑っています。

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0

(質問の編集で回答。コミュニティ wiki の回答に変換。質問への回答が質問自体に追加された場合の適切なアクションは何ですか? を参照してください。 )

OP は次のように書いています。

この問題は videobox にあると言いましたが、videobox の border-alpha=0 またはアルファ チャネルを追加する必要があります。

完全に機能するパイプライン: 3 つの RTP h264 ビデオを受け入れ、ビデオ テスト パターンでミックスします。

gst-launch -vvvve videomixer2 name=mix ! ffmpegcolorspace ! xvimagesink sync=false  udpsrc caps=$VIDEO_CAPS port=3030 ! .recv_rtp_sink_0 gstrtpbin ! rtph264depay ! ffdec_h264  ! videoscale ! video/x-raw-yuv , width=176, height=144 ! videobox border-alpha=0 top=0 left=0 ! video/x-raw-yuv,format=\(fourcc\)AYUV ! ffmpegcolorspace !  mix.  udpsrc caps=$VIDEO_CAPS port=6666 ! .recv_rtp_sink_0 gstrtpbin ! rtph264depay ! ffdec_h264  ! videoscale ! video/x-raw-yuv , width=176, height=144 ! videobox border-alpha=0 top=0 left=-176 ! video/x-raw-yuv,format=\(fourcc\)AYUV ! ffmpegcolorspace !  mix. udpsrc caps=$VIDEO_CAPS port=2222 ! .recv_rtp_sink_0 gstrtpbin ! rtph264depay ! ffdec_h264  ! videoscale ! video/x-raw-yuv , width=176, height=144 ! videobox border-alpha=0 top=-144 left=0 ! video/x-raw-yuv,format=\(fourcc\)AYUV ! mix. videotestsrc ! video/x-raw-yuv, framerate=15/1, width=352, height=288 ! mix.

ここに画像の説明を入力

于 2015-02-08T13:29:43.187 に答える