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• Use audio stream overs ssh with ffmpeg on web page

  12 février 2020, par Mauricio

  I need to broadcast the audio stream (WiFi camera at my home) on the website hosted on a VPS.

  Here is the command executed from my home :

  ffmpeg -i "rtsp://172.16.0.201:554/user=admin&password=root&channel=1&stream=1.sdp" -bufsize 24k -vn -acodec copy -f mpegts - | ssh -p 22222 root@mydomain.org 'ffmpeg -i - -vn -acodec libvorbis -ac 1 -ar 8000 -ab 64k -f mpegts "rtsp://127.0.0.1:53350/live.sdp"'

  It seems to work because I get

  ffmpeg version n4.2.2 Copyright (c) 2000-2019 the FFmpeg developers
  
    built with gcc 9.2.0 (GCC)
  
    configuration: --prefix=/usr --disable-debug --disable-static --disable-stripping --enable-fontconfig --enable-gmp --enable-gnutls --enable-gpl --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libdav1d --enable-libdrm --enable-libfreetype --enable-libfribidi --enable-libgsm --enable-libiec61883 --enable-libjack --enable-libmfx --enable-libmodplug --enable-libmp3lame --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libv4l2 --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxcb --enable-libxml2 --enable-libxvid --enable-nvdec --enable-nvenc --enable-omx --enable-shared --enable-version3
  
    libavutil      56. 31.100 / 56. 31.100
  
    libavcodec     58. 54.100 / 58. 54.100
  
    libavformat    58. 29.100 / 58. 29.100
  
    libavdevice    58.  8.100 / 58.  8.100
  
    libavfilter     7. 57.100 /  7. 57.100
  
    libswscale      5.  5.100 /  5.  5.100
  
    libswresample   3.  5.100 /  3.  5.100
  
    libpostproc    55.  5.100 / 55.  5.100
  
  ffmpeg version 4.1.4-1~deb10u1 Copyright (c) 2000-2019 the FFmpeg developers
  
    built with gcc 8 (Debian 8.3.0-6)
  
    configuration: --prefix=/usr --extra-version='1~deb10u1' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
  
    libavutil      56. 22.100 / 56. 22.100
  
    libavcodec     58. 35.100 / 58. 35.100
  
    libavformat    58. 20.100 / 58. 20.100
  
    libavdevice    58.  5.100 / 58.  5.100
  
    libavfilter     7. 40.101 /  7. 40.101
  
    libavresample   4.  0.  0 /  4.  0.  0
  
    libswscale      5.  3.100 /  5.  3.100
  
    libswresample   3.  3.100 /  3.  3.100
  
    libpostproc    55.  3.100 / 55.  3.100
  
  Guessed Channel Layout for Input Stream #0.1 : mono
  
  Input #0, rtsp, from 'rtsp://172.16.0.201:554/user=admin&password=root&channel=1&stream=1.sdp':
  
    Metadata:
  
      title           : RTSP Session
  
    Duration: N/A, start: 0.000000, bitrate: N/A
  
      Stream #0:0: Video: h264 (Main), yuv420p(progressive), 640x360, 12 fps, 12 tbr, 90k tbn, 24 tbc
  
      Stream #0:1: Audio: pcm_alaw, 8000 Hz, mono, s16, 64 kb/s
  
  [mpegts @ 0x5582b6b14c40] frame size not set
  
  Output #0, mpegts, to 'pipe:':
  
    Metadata:
  
      title           : RTSP Session
  
      encoder         : Lavf58.29.100
  
      Stream #0:0: Audio: pcm_alaw, 8000 Hz, mono, s16, 64 kb/s
  
  Stream mapping:
  
    Stream #0:1 -> #0:0 (copy)
  
  Press [q] to stop, [?] for help
  
  size=     146kB time=00:00:17.06 bitrate=  70.0kbits/s speed=1.16x

  But when I look on the VPS I don’t see the port open with netstat.

  Yet the process seems to be running

  root     21801  0.2  2.1 265916 42188 ?        SLs  15:03   0:00 ffmpeg -i - -vn -acodec libvorbis -ac 1 -ar 8000 -ab 64k -f mpegts rtsp://127.0.0.1:53350/live.sdp

  I thought I would access the feed with a simple html page with this kind of code

  <audio controls="controls">
  
  <source type="audio/ogg"></source>
  
  <em>Désolé, votre navigateur ne supporte pas l'audio HTML5</em>
  
  </audio>

  iptables

  Chain INPUT (policy DROP)
  
  ....
  
  ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:53350
  
  ACCEPT     udp  --  anywhere             anywhere             udp dpt:53350
  
  ....
  
  Chain FORWARD (policy DROP)
  
  ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:53350
  
  ACCEPT     udp  --  anywhere             anywhere             udp dpt:53350
  
  ....
  
  Chain OUTPUT (policy DROP)
  
  ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:53350
  
  ACCEPT     udp  --  anywhere             anywhere             udp dpt:53350
  
  ....

• FFMPEG not executing fully through python code but works from cmd

  3 mars 2020, par Shaun Micallef

  I am new to python and am trying to execute a cmd command using python like the following :

  os.system('cmd /c "ffmpeg -i {} -t 00:30 {}"'.format(videURLlink, video_name))

  when executing the above on my laptop it is working but on my pc it is not. the below is the result of the command execution but it doesn’t continue and stops there

  ffmpeg version 4.2 Copyright (c) 2000-2019 the FFmpeg developers
  
    built with gcc 9.1.1 (GCC) 20190807
  
    configuration: --disable-static --enable-shared --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
  
    libavutil      56. 31.100 / 56. 31.100
  
    libavcodec     58. 54.100 / 58. 54.100
  
    libavformat    58. 29.100 / 58. 29.100
  
    libavdevice    58.  8.100 / 58.  8.100
  
    libavfilter     7. 57.100 /  7. 57.100
  
    libswscale      5.  5.100 /  5.  5.100
  
    libswresample   3.  5.100 /  3.  5.100
  
    libpostproc    55.  5.100 / 55.  5.100
  
  [hls @ 0000016fa1800fc0] Skip ('#EXT-X-VERSION:3')
  
  [hls @ 0000016fa1800fc0] Opening 'https://hddn01.skylinewebcams.com/02900101X8TS-1583232346899.ts' for reading
  
  [hls @ 0000016fa1800fc0] Opening 'https://hddn01.skylinewebcams.com/02900101X8TS-1583232354899.ts' for reading
  
  [hls @ 0000016fa1800fc0] Could not find codec parameters for stream 1 (Audio: aac ([15][0][0][0] / 0x000F), 0 channels, fltp): unspecified sample rate
  
  Consider increasing the value for the 'analyzeduration' and 'probesize' options
  
  Input #0, hls, from 'https://hddn01.skylinewebcams.com/live.m3u8?a=bmnvut6ok8qfirptmtgu2j37c5':
  
    Duration: N/A, start: 18396.450000, bitrate: N/A
  
    Program 0 
  
      Metadata:
  
        variant_bitrate : 0
  
      Stream #0:0: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p, 1280x1024, 12 fps, 12 tbr, 90k tbn, 180k tbc
  
      Metadata:
  
        variant_bitrate : 0
  
      Stream #0:1: Audio: aac ([15][0][0][0] / 0x000F), 0 channels, fltp
  
      Metadata:
  
        variant_bitrate : 0

  I am using anaconda as the python interpreter and migrated the environment from my laptop to my pc.If I execute the cmd directly through cmd it works. Any idea why ?

• What difference does it make which version of Mozilla, MacOS and Safari we specify for using ffmpeg ?

  3 mars 2020, par Kaizer Sozay

  I came across this snippet of code for downloading m3u8 playlists and concatenating them into an mkv file :

  $ ffmpeg -user_agent "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_5) AppleWebKit/601.7.8 (KHTML, like Gecko) Version/9.1.3 Safari/537.86.7" -i https://devstreaming-cdn.apple.com/videos/wwdc/2019/901myoscpux9y7nry55/901/hls_vod_mvp.m3u8 -c copy pd.mkv

  My question is about the section of the script :

  "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_5) AppleWebKit/601.7.8 (KHTML, like Gecko) Version/9.1.3 Safari/537.86.7"

  These seem like very old numbers. For example, Catalina is 10.15.3. No idea which is the latest Mozilla but Safari is now on 13.0.5

  Was just wondering if it makes any difference if the version is old, or if we should update to the code to specify newer versions of Mac OS, Mozilla, Webkit and Safari.

  Can someone explain the significance ?