Changes

9. Check that the audio drivers / card is available to ALSA.<pre>pi@raspberrypi:~ $ arecord -l**** List of CAPTURE Hardware Devices ****card 1: tc358743 [tc358743], device 0: bcm2835-i2s-dir-hifi dir-hifi-0 [bcm2835-i2s-dir-hifi dir-hifi-0] Subdevices: 1/1 Subdevice #0: subdevice #0</pre>Note: <span style="color:red;">card 1</span> means that the card number for the TC358743XBG is "1" and it might be different. 10. Install GStreamer tool;

view Check gstreamer tool version:

1011. Use gstreamer to record video and audio

If the video and audio are well connected, you can get a playable video foo.kmv after running the above command. If the input video source has sound, you will be able to hear mkv is the corresponding soundoutput file.  

PS: Please We recommend that you modify the above '''<span style="color:red;">framerate</span>''' parameter to the actual frame rate of your HDMI signal, the actual frame rate value is from the result of ''''v4l2-ctl --query-dv-timings'''' command.

gst-launch-1.0 -vvv v4l2src ! "video/x-raw,'''<span style="color:red;">framerate=60/1</span>''',format=UYVY" ! v4l2h264enc extra-controls="controls,h264_profile=4,h264_level=13,video_bitrate=256000;" ! "video/x-h264,profile=high, level=(string)4.2" ! h264parse ! queue ! matroskamux name=mux ! filesink location=foo.mkv <span style="color:red;">alsasrc device=hw:1 </span> ! audio/x-raw,rate=48000,channels=2 ! audioconvert ! avenc_aac bitrate=48000 ! aacparse ! queue ! mux. Note: <span style="color:red;">alsasrc device=hw:1</span> - "1" means the audio card number, You must change to correct audio card number.