First, this line works fine for flv streaming. Thus it generated working video data.
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cvlc v4l2:///dev/video0:width=1280:height=720:chroma=h264:input-slave=alsa://hw:C920,0:v4l2-standard=1:fps=30 --sout "#standard{mux=ffmpeg{mux=flv},access=http,dst=:8080/stream.flv"
Then, I tried push RTMP to YouTube with this line, but YouTube keeps black and never received any data. Also I didn't got any warning or error message in my console.
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cvlc -vvv v4l2:///dev/video0:width=1280:height=720:chroma=h264:input-slave=alsa://hw:C920,0:v4l2-standard=1:fps=30 --live-caching=2500 --sout "#std{access=rtmp,mux=ffmpeg{mux=flv},dst=rtmp://a.rtmp.youtube.com/live2/xxxx-xxxx-xxxx-xxxx}"
Then, I changed few characters of the YouTube serial number in the last command, and it shows following error in my console, which make me believed that the previous command was actual pushed data to YouTube successfully but YouTube never accepted it for some reason.
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[rtmp @ 0x7fd6a0050800] Creating stream...
[rtmp @ 0x7fd6a0050800] Sending publish command for 'xxxx-xxxx-xxxx-XXXX'
[00007fd6a0002740] avio access out error: Failed to open rtmp://a.rtmp.youtube.com/live2/xxxx-xxxx-xxxx-XXXX
[00007fd6a0002740] main access out debug: no sout access modules matched
[00007fd6a0001300] stream_out_standard stream out error: no suitable sout access module for `rtmp/ffmpeg{mux=flv}://rtmp://a.rtmp.youtube.com/live2/xxxx-xxxx-xxxx-XXXX'
[00007fd6a0001300] main stream out debug: no sout stream modules matched
[00007fd6a0001300] main stream out debug: destroying chain... (name=(null))
[00007fd6a0001300] main stream out debug: destroying chain done
[00007fd6a0000e80] main stream output error: stream chain failed for `std{access=rtmp,mux=ffmpeg{mux=flv},dst=rtmp://a.rtmp.youtube.com/live2/xxxx-xxxx-xxxx-XXXX}'
[00007fd6a8000c40] main input error: cannot start stream output instance, aborting
[000055924e0e6500] main playlist debug: dead input
[000055924e0e6500] main playlist debug: changing item without a request (current 0/1)
[000055924e0e6500] main playlist debug: nothing to play
Now following is my webcam setting displayed with v4l2-ctl command.
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Video input : 0 (Camera 1: ok)
Format Video Capture:
Width/Height : 1280/720
Pixel Format : 'H264' (H.264)
Field : None
Bytes per Line : 2560
Size Image : 1843200
Colorspace : sRGB
Transfer Function : Default (maps to sRGB)
YCbCr/HSV Encoding: Default (maps to ITU-R 601)
Quantization : Default (maps to Full Range)
Flags :
Crop Capability Video Capture:
Bounds : Left 0, Top 0, Width 1280, Height 720
Default : Left 0, Top 0, Width 1280, Height 720
Pixel Aspect: 1/1
Selection: crop_default, Left 0, Top 0, Width 1280, Height 720, Flags:
Selection: crop_bounds, Left 0, Top 0, Width 1280, Height 720, Flags:
Streaming Parameters Video Capture:
Capabilities : timeperframe
Frames per second: 30.000 (30/1)
Read buffers : 0
Any suggestion for how could I resolve this problem?