hardware:video-pis

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hardware:video-pis [2024/03/20 00:25] – SMPTE2022-1 Streaming with Auvidea B101 HDMI-CSI2-Bridge, audio and display-loop-out included wtfhardware:video-pis [2024/04/03 21:11] – [gstreamer with Auvidea B101 HDMI-CSI2-Bridge] wtf
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 += Video-Pis
 +
 Research-documentation for H264-encoding and streaming with Raspberry Pis. Research-documentation for H264-encoding and streaming with Raspberry Pis.
  
-= gstreamer+== gstreamer with Auvidea B101 HDMI-CSI2-Bridge
  
-== MPEGTS per UDP with Forward-Error-Correction (FEC) a la SMPTE 2022-1+ * max. supported resolution: 1080p30. [[https://forums.raspberrypi.com/viewtopic.php?t=268787|Theoretically]] CSI-2 with two lanes (card-sized RPis; CM4-module has 4 lanes!) should be capable of handling 1080p50 in UYVY colorspace, but this fails so far, even as UYVY seems to be in use. (It's unclear if everything will literally melt, too ;) 
 + * The iframe-peroid of 2 frames is quiet aggressive. 
 + * I/O-mode = auto. Result unclear, it seems popular stating DMAbuf here. Investigate!
  
-Since 2020 there is an implementation of SMPTE 2022-1 in gstreamer: [[https://mathieuduponchelle.github.io/2020-10-09-SMPTE-2022-1-2D-Forward-Error-Correction-in-GStreamer.html|blog-post by Mathieu]]. +=== SMPTE2022-1 FEC streaming (multicast/unicast), audio and display-loop-out included 
 + 
 +Since 2020 there is an implementation of SMPTE 2022-1 in gstreamer, done in MPEGTS via UDP with 2D-FEC: [[https://mathieuduponchelle.github.io/2020-10-09-SMPTE-2022-1-2D-Forward-Error-Correction-in-GStreamer.html|blog-post by Mathieu]]. 
  
 Documentation: [[https://gstreamer.freedesktop.org/documentation/rtpmanager/rtpst2022-1-fecdec.html|rtpst2022-1-fecdec]], [[https://gstreamer.freedesktop.org/documentation/rtpmanager/rtpst2022-1-fecenc.html|rtpst2022-1-fecenc]] Documentation: [[https://gstreamer.freedesktop.org/documentation/rtpmanager/rtpst2022-1-fecdec.html|rtpst2022-1-fecdec]], [[https://gstreamer.freedesktop.org/documentation/rtpmanager/rtpst2022-1-fecenc.html|rtpst2022-1-fecenc]]
  
- 
-=== SMPTE2022-1 Streaming with Auvidea B101 HDMI-CSI2-Bridge, audio and display-loop-out included 
  
  * Tested by wtf with an Raspberry Pi 4B+ with Raspberry Pi OS 2023-10-10, Debian Bookworm each, in March 2024.  * Tested by wtf with an Raspberry Pi 4B+ with Raspberry Pi OS 2023-10-10, Debian Bookworm each, in March 2024.
- * Works well per multicast as per unicast. + * Works per multicast as well as per unicast. 
- * Latency: 1-1.1 Seconds+ * Latency: ca. 1 second
  * Receiver needs a static route towards 224.0.0.0/4 on eth0 in order to receive multicast.  * Receiver needs a static route towards 224.0.0.0/4 on eth0 in order to receive multicast.
  * Receiver needs to be started before (first) launch of sender. Help needed! [[https://github.com/MathieuDuponchelle/MathieuDuponchelle.github.io/issues/11|Issue at Mathieu]].  * Receiver needs to be started before (first) launch of sender. Help needed! [[https://github.com/MathieuDuponchelle/MathieuDuponchelle.github.io/issues/11|Issue at Mathieu]].
- * I/O-mode = auto. Result unclear, it seems popular stating DMAbuf here. Investigate! 
- * The iframe-peroid of 2 frames is quiet aggressive. 
  * Don't forget to remove "netsim drop-probability=0.01" before flight!  * Don't forget to remove "netsim drop-probability=0.01" before flight!
  
 Sender, using Audio from HDMI-In and sending video-input to display: Sender, using Audio from HDMI-In and sending video-input to display:
  
-  gst-launch-1.0  \ +Hint: For better reading pipelines are described as pipeline files which one can use with `gst-launch-1.0 -f pipeline-file.txt`. 
-  rtpbin name=rtp fec-encoders='fec,0="rtpst2022-1-fecenc\ rows\=4\ columns\=4";' \ + 
-        v4l2src device=/dev/video0 io-mode=0 do-timestamp=true ! "video/x-raw,framerate=30/1,format=UYVY,colorimetry=bt601" ! \ +``` 
- tee name=input ! \ +rtpbin  
- v4l2h264enc output-io-mode=0 extra-controls="controls,h264_profile=4,h264_level=11,video_bitrate=15000000,video_bitrate_mode=0,h264_i_frame_period=2;" ! "video/x-h264,profile=high, level=(string)4" ! h264parse ! \ +  name=rtp  
- mpegtsmux name=mux ! rtpmp2tpay ssrc=0 ! rtp.send_rtp_sink_0  \ +  fec-encoders='fec,0="rtpst2022-1-fecenc\ rows\=4\ columns\=4";' 
-   rtp.send_rtp_src_0 ! udpsink host=224.0.23.1 port=5000 multicast-iface=eth0 \ + 
-   rtp.send_fec_src_0_0 ! udpsink host=224.0.23.1 port=5002 async=false multicast-iface=eth0 \ +v4l2src  
-   rtp.send_fec_src_0_1 ! udpsink host=224.0.23.1 port=5004 async=false multicast-iface=eth0 \ +  device=/dev/video0  
- alsasrc device=hw:tc358743 do-timestamp=true ! audio/x-raw,format=S16LE,rate=48000,channels=2 ! audioconvert ! voaacenc bitrate=48000 ! aacparse ! queue ! mux. \ +  io-mode=0 
- input. ! queue ! videoconvert ! fbdevsink device="/dev/fb0" sync=false+  do-timestamp=true  
 +! "video/x-raw,framerate=30/1,format=UYVY,colorimetry=bt601" 
 +! tee  
 +  name=input 
 +! v4l2h264enc 
 +  output-io-mode=0  
 +  extra-controls="controls,h264_profile=4,h264_level=11,video_bitrate=15000000,video_bitrate_mode=0,h264_i_frame_period=2;"  
 +! "video/x-h264,profile=high, level=(string)4"  
 +! h264parse  
 +! mpegtsmux  
 +  name=mux  
 +! rtpmp2tpay  
 +  ssrc=0  
 +! rtp.send_rtp_sink_0 
 + 
 +rtp.send_rtp_src_0  
 +! udpsink  
 +  host=224.0.23.1  
 +  port=5000  
 +  multicast-iface=eth0  
 + 
 +rtp.send_fec_src_0_0  
 +! udpsink  
 +  host=224.0.23.1  
 +  port=5002  
 +  async=false  
 +  multicast-iface=eth0 
 + 
 +rtp.send_fec_src_0_1  
 +! udpsink  
 +  host=224.0.23.1  
 +  port=5004  
 +  async=false  
 +  multicast-iface=eth0 
 + 
 +alsasrc 
 +  device=hw:tc358743  
 +  do-timestamp=true  
 +! "audio/x-raw,format=S16LE,rate=48000,channels=2"  
 +! audioconvert  
 +! voaacenc  
 +  bitrate=48000  
 +! aacparse  
 +! queue  
 +! mux. 
 + 
 +input.  
 +! queue  
 +! videoconvert  
 +! fbdevsink  
 +  device="/dev/fb0"  
 +  sync=false 
 +```
  
 Receiver, with audio-out on Headphone-jack: Receiver, with audio-out on Headphone-jack:
  
-  gst-launch-1.0 \ +``` 
-    rtpbin latency=100 fec-decoders='fec,0="rtpst2022-1-fecdec\ size-time\=100000000";' name=rtp \ +rtpbin  
-    udpsrc address=224.0.23.1 port=5002 caps="application/x-rtp, payload=96" ! queue ! rtp.recv_fec_sink_0_0 \ +  latency=100  
-    udpsrc address=224.0.23.1 port=5004 caps="application/x-rtp, payload=96" ! queue ! rtp.recv_fec_sink_0_1 \ +  fec-decoders='fec,0="rtpst2022-1-fecdec\ size-time\=100000000";'  
-    udpsrc address=224.0.23.1 port=5000 caps="application/x-rtp, media=video, clock-rate=90000, encoding-name=mp2t, payload=33" ! \ +  name=rtp 
-      queue ! netsim drop-probability=0.01 ! rtp.recv_rtp_sink_0 \ +     
-    rtp. ! queue ! decodebin name=decode  ! videoconvert ! queue !  kmssink \ +udpsrc  
-    decode. ! audioconvert ! queue ! alsasink card-name="bcm2835 Headphones"+  address=224.0.23.1  
 +  port=5002  
 +  caps="application/x-rtp, payload=96"  
 +! queue  
 +! rtp.recv_fec_sink_0_0 
 + 
 +udpsrc 
 +  address=224.0.23.1  
 +  port=5004  
 +  caps="application/x-rtp, payload=96"  
 +! queue  
 +! rtp.recv_fec_sink_0_1 
 + 
 +udpsrc 
 +  address=224.0.23.1 
 +  port=5000 
 +  caps="application/x-rtp, media=video, clock-rate=90000, encoding-name=mp2t, payload=33"  
 +! queue  
 +! netsim  
 +    drop-probability=0.01  
 +! rtp.recv_rtp_sink_0 
 + 
 +rtp.  
 +! queue  
 +! decodebin  
 +    name=decode 
 +! videoconvert  
 +! queue  
 +! kmssink 
 + 
 +decode.  
 +! audioconvert  
 +! queue  
 +! alsasink  
 +    card-name="bcm2835 Headphones" 
 +``` 
 + 
 +=== SRT streaming (unicast), audio and display-loop-out included 
 + 
 + * Tested by wtf with an Raspberry Pi 4B+ with Raspberry Pi OS 2023-10-10, Debian Bookworm each, in March 2024. 
 + * Latency: ca. 0.7 seconds 
 + * SRT-desired latency is with 40ms VERY aggressive! The suggested value is 2.5 times the round-trip-time (RTT) between both hosts. 
 + * starting/restarting-order seems strange and needs to be investigated. 
 + 
 +Sender, using audio from HDMI-In and sending video-input to display: 
 + 
 +``` 
 +v4l2src  
 +    device=/dev/video0  
 +    io-mode=0  
 +    do-timestamp=true  
 +! "video/x-raw,framerate=30/1,format=UYVY,colorimetry=bt601"  
 +! tee  
 +    name=input 
 +! v4l2h264enc  
 +    output-io-mode=0  
 +    extra-controls="controls,h264_profile=4,h264_level=11,video_bitrate=15000000,video_bitrate_mode=0,h264_i_frame_period=2;" 
 +! "video/x-h264,profile=high, level=(string)4" 
 +! mpegtsmux  
 +    name=mux  
 +! srtsink  
 +    uri=srt://:8888  
 +    latency=40  
 +    mode=listener  
 +    wait-for-connection=true 
 + 
 +input.  
 +! queue  
 +! videoconvert  
 +! fbdevsink  
 +    sync=false 
 + 
 +alsasrc  
 +    device=hw:tc358743  
 +    do-timestamp=true  
 +! "audio/x-raw,format=S16LE,rate=48000,channels=2"  
 +! audioconvert  
 +! voaacenc  
 +    bitrate=48000  
 +! aacparse  
 +! queue  
 +! mux.  
 +``` 
 + 
 +Receiver, with audio-out on Headphone-jack: 
 + 
 +``` 
 +srtclientsrc  
 +    latency=20  
 +    mode=caller  
 +    uri=srt://${ipAddress}:8888  
 +! tsdemux  
 +    latency=40  
 +    name=demux  
 + 
 +demux.  
 +! queue  
 +! decodebin  
 +    name=decode  
 +! videoconvert  
 +! queue  
 +! kmssink 
 + 
 +demux.  
 +! queue  
 +! avdec_aac  
 +! audioconvert  
 +! alsasink  
 +    card-name="bcm2835 Headphones" 
 +``` 
 + 
 +=== RIST streaming (multicast/unicast), audio and display-loop-out included 
 + 
 +RIST seems to be the new kid around the corner of SRT. No FEC, but re-transmission-requests with RTCP, which shall work via multicast, too? 
 + 
 + * Tested by wtf with an Raspberry Pi 4B+ with Raspberry Pi OS 2023-10-10, Debian Bookworm each, in March 2024. 
 + * Latency: reducable to 0.5s 
 + * most errors 
 + 
 +Sender, using audio from HDMI-In and sending video-input to display: 
 + 
 +``` 
 +v4l2src  
 +    device=/dev/video0  
 +    io-mode=0  
 +    do-timestamp=true  
 +! "video/x-raw,framerate=30/1,format=UYVY,colorimetry=bt601"  
 +! tee  
 +    name=input  
 +! v4l2h264enc  
 +    output-io-mode=0  
 +    extra-controls="controls,h264_profile=4,h264_level=11,video_bitrate=15000000,video_bitrate_mode=0,h264_i_frame_period=2,sequence_header_mode=0;"  
 +! "video/x-h264,profile=high, level=(string)4"  
 +! mpegtsmux  
 +    name=mux  
 +! rtpmp2tpay  
 +! ristsink  
 +    address=224.0.23.1  
 +    port=5004  
 +    multicast-iface=eth0 
 + 
 +input.  
 +! queue  
 +! videoconvert  
 +! fbdevsink  
 +    sync=false \ 
 +     
 +alsasrc  
 +    device=hw:tc358743  
 +    do-timestamp=true  
 +! "audio/x-raw,format=S16LE,rate=48000,channels=2"  
 +! audioconvert  
 +! voaacenc  
 +    bitrate=48000  
 +! aacparse  
 +! queue  
 +! mux. 
 +``` 
 + 
 +Receiver, with audio-out on headphone-jack:
  
 +```
 +ristsrc 
 +    address=224.0.23.1 
 +    receiver-buffer=200 
 +    reorder-section=20 
 +! rtpmp2tdepay 
 +! tsdemux 
 +    latency=50 
 +    name=demux 
  
 +demux. 
 +! queue 
 +! decodebin 
 +    name=decode 
 +! videoconvert 
 +! queue 
 +! kmssink
  
 +demux. 
 +! queue 
 +! avdec_aac 
 +! audioconvert 
 +! alsasink 
 +    card-name="bcm2835 Headphones"
 +```
  • hardware/video-pis.txt
  • Last modified: 2024/04/03 21:13
  • by wtf