Recherche avancée

Sur d’autres sites (12802)

• FFMPEG build still resulting in `Illegal instruction` on raspberry pi ZERO, but not PI 2+

  17 mai 2017, par zyeek

  The process in which I do it configures the lib and ffmpeg files on the zero then move over to a pi 3 to make and install it (for speed).

  Build process :

  # x264
  
  git clone git://git.videolan.org/x264.git
  
  cd x264
  
  sudo ./configure --host=arm-unknown-linux-gnueabi --enable-shared --disable-opencl
  
  sudo make
  
  sudo make install
  
  sudo ldconfig
  
  
  
  # FFMPEG
  
  git clone git://source.ffmpeg.org/ffmpeg.git
  
  cd ffmpeg
  
  sudo ./configure --arch=armel --target-os=linux --enable-gpl --enable-libx264 --enable-nonfree
  
  sudo make
  
  sudo make install

  I tried following this cross compile type build but complained I was missing a C compiler, but GCC was installed. SO I just went to follow my previous method.

  Results of trying to run it :

  pi@raspberrypi:~ $ ffmpeg -f v4l2 -i /dev/video0 -c:v libx264 -preset ultrafast -crf 0 http://localhost:8090/feed1.ffm
  
  ffmpeg version N-85747-gc4be288 Copyright (c) 2000-2017 the FFmpeg developers
  
    built with gcc 4.9.2 (Raspbian 4.9.2-10)
  
    configuration: --arch=armel --target-os=linux --enable-gpl --enable-libx264 --enable-nonfree
  
    libavutil      55. 61.100 / 55. 61.100
  
    libavcodec     57. 93.100 / 57. 93.100
  
    libavformat    57. 72.101 / 57. 72.101
  
    libavdevice    57.  7.100 / 57.  7.100
  
    libavfilter     6. 88.100 /  6. 88.100
  
    libswscale      4.  7.101 /  4.  7.101
  
    libswresample   2.  8.100 /  2.  8.100
  
    libpostproc    54.  6.100 / 54.  6.100
  
  Input #0, video4linux2,v4l2, from '/dev/video0':
  
    Duration: N/A, start: 682.500534, bitrate: 110592 kb/s
  
      Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 640x360, 110592 kb/s, 30 fps, 30 tbr, 1000k tbn, 1000k tbc
  
  [tcp @ 0x2cba570] Connection to tcp://localhost:8090 failed (Connection refused), trying next address
  
  Wed May  3 12:30:16 2017 127.0.0.1 - - [GET] "/feed1.ffm HTTP/1.1" 200 4175
  
  [tcp @ 0x2cbf1b0] Connection to tcp://localhost:8090 failed (Connection refused), trying next address
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
  
  Press [q] to stop, [?] for help
  
  No pixel format specified, yuv422p for H.264 encoding chosen.
  
  Use -pix_fmt yuv420p for compatibility with outdated media players.
  
  Wed May  3 12:30:16 2017 127.0.0.1 - - [POST] "/feed1.ffm HTTP/1.1" 200 0
  
  Illegal instruction

• FFMPEG build still resulting in Illegal instruction on raspberry pi ZERO, but not PI 2+

  3 mai 2017, par zyeek

  The process in which I do it configures the lib and ffmpeg files on the zero then move over to a pi 3 to make and install it (for speed).

  Build process :

  # x264
  
  git clone git://git.videolan.org/x264.git
  
  cd x264
  
  sudo ./configure --host=arm-unknown-linux-gnueabi --enable-shared --disable-opencl
  
  sudo make
  
  sudo make install
  
  sudo ldconfig
  
  
  
  # FFMPEG
  
  git clone git://source.ffmpeg.org/ffmpeg.git
  
  cd ffmpeg
  
  sudo ./configure --arch=armel --target-os=linux --enable-gpl --enable-libx264 --enable-nonfree
  
  sudo make
  
  sudo make install

  I tried following this cross compile type build but complained I was missing a C compiler, but GCC was installed. SO I just went to follow my previous method.

  Results of trying to run it :

  pi@raspberrypi:~ $ ffmpeg -f v4l2 -i /dev/video0 -c:v libx264 -preset ultrafast -crf 0 http://localhost:8090/feed1.ffm
  
  ffmpeg version N-85747-gc4be288 Copyright (c) 2000-2017 the FFmpeg developers
  
    built with gcc 4.9.2 (Raspbian 4.9.2-10)
  
    configuration: --arch=armel --target-os=linux --enable-gpl --enable-libx264 --enable-nonfree
  
    libavutil      55. 61.100 / 55. 61.100
  
    libavcodec     57. 93.100 / 57. 93.100
  
    libavformat    57. 72.101 / 57. 72.101
  
    libavdevice    57.  7.100 / 57.  7.100
  
    libavfilter     6. 88.100 /  6. 88.100
  
    libswscale      4.  7.101 /  4.  7.101
  
    libswresample   2.  8.100 /  2.  8.100
  
    libpostproc    54.  6.100 / 54.  6.100
  
  Input #0, video4linux2,v4l2, from '/dev/video0':
  
    Duration: N/A, start: 682.500534, bitrate: 110592 kb/s
  
      Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 640x360, 110592 kb/s, 30 fps, 30 tbr, 1000k tbn, 1000k tbc
  
  [tcp @ 0x2cba570] Connection to tcp://localhost:8090 failed (Connection refused), trying next address
  
  Wed May  3 12:30:16 2017 127.0.0.1 - - [GET] "/feed1.ffm HTTP/1.1" 200 4175
  
  [tcp @ 0x2cbf1b0] Connection to tcp://localhost:8090 failed (Connection refused), trying next address
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
  
  Press [q] to stop, [?] for help
  
  No pixel format specified, yuv422p for H.264 encoding chosen.
  
  Use -pix_fmt yuv420p for compatibility with outdated media players.
  
  Wed May  3 12:30:16 2017 127.0.0.1 - - [POST] "/feed1.ffm HTTP/1.1" 200 0
  
  Illegal instruction

• Using ffserver to do UDP multicast streaming

  20 novembre 2015, par Catherine MacInnes

  Here’s the deal. I’m working with IPTV hardware and I need to output a bunch of demo streams. These are MPEG2 transport stream that need to be straight up UDP Multicast streams. I have an ffmpeg command that works great :

  ffmpeg -re -i /Volumes/Data/DemoVideos/GRAILrpsp.ts -acodec copy -vcodec copy -f mpegts udp://239.192.1.82:12000[ttl=1,buffer_size=2097157]

  What I would like to do is convert this into an ffserver config file instead of having to start a whole bunch of ffmpeg streams and then figuring out how to get them to loop. I’m sure I can do it with the right scripting but what a pain, isn’t that what ffserver is for ? But I can’t find any documentation on doing UDP streaming using ffserver. You can set a multicast address and port but it goes to RTP which this hardware isn’t designed for. Any help would be greatly appreciated.