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• Is ffmpeg able to read ArrayBuffer input from stream

  7 juillet 2017, par jAndy

  I want to accomplish the following tasks :

  • Record Video+Audio from any HTML5 (MediaStream) capable browser
  • Send that data via WebSocket as Blob / ArrayBuffer chunks to a server
  • Broadcast that input stream-data to multiple clients

  As it turns out, this brought me into a world of pain. The first task is fairly simple using the HTML5 MediaStream objects alongside WebSockets.

  // ... for simplicity...
  
  navigator.mediaDevices.getUserMedia({ audio: true, video: true }).then(stream => {
  
      let mediaRecorder = new MediaRecorder( stream );
  
      // ...
  
      mediaRecorder.ondataavailable = e => {
  
          webSocket.send( 'newVideoData', e.data ); // configured for binary data
  
      };
  
  });

  Now, I want to receive those data fragments and stream those via nginx vod module, because I guess I want the output stream in HLS or DASH.
  I could write a little nodejs script as backend, which just receives the binary chunks and write them to a file or stream, and just reference it so nginx vod module could possibly read it and create the m3u8 manifest on the fly ?

  I am wondering now,

  • if ffmpeg is able to read that binary data directly (should be webm format), without a man-in-the-middle script, "somehow" ?
  • If not, do I have to write the data down into a file and pass that as input to ffmpeg or can I (should I) pipe the data to a self spawned ffmpeg instance ? (if so, how ?)
  • Do I actually need the nginx server (probably alongside rtmp module) to deliver the output stream as HLS or could I just use ffmpeg to also create a dynamic manifest ?
  • Is the nginx vod module capable of creating a dynamic hls/dash manifest or must the input data be complete beforehand ?
  • Ultimately, am I on the totally wrong track here ? :P

  Actually I just want to create a little video-live-chat demo, without any plugins or 3rd party encoding software, pure browser.

• Cannot Compile FFMPEG with libfreetype on Windows/Msys2

  10 octobre 2024, par Devin Dixon

  I am having issues compiling ffmpeg with libfreetype with this commmand on windows MSYS2 :

  


  ./configure     --pkg-config-flags="--static" --enable-libvpl  --enable-libopenh264     --enable-version3  --enable-libfreetype    --enable-libopus     --enable-libvpx     --enable-libvorbis     --enable-libaom     --enable-libdav1d     --disable-gpl     --disable-w32threads     --enable-pthreads     --disable-shared     --enable-static     --extra-cflags='--static'   --extra-cflags="-I/mingw64/include -static"   --extra-ldflags="-L/mingw64/lib -static" --prefix="/home/compiled"


  


  I keep getting this error :

  


  ERROR: freetype2 not found using pkg-config

If you think configure made a mistake, make sure you are using the latest
version from Git.  If the latest version fails, report the problem to the
ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.libera.chat.
Include the log file "ffbuild/config.log" produced by configure as this will help
solve the problem.


  


  I've installed freetype with this command :

  


   pacman -Ss mingw-w64-x86_64-freetype


  


  I've also tried compiling freetype2 from the source :

  


  git clone https://git.savannah.gnu.org/git/freetype/freetype2.git

cd freetype2

mkdir build && cd build

/mingw64/bin/cmake .. -G "MSYS Makefiles" -DBUILD_SHARED_LIBS=OFF -DCMAKE_INSTALL_PREFIX=/mingw64

make

make install


  


  And pkg-config gives this :

  


  pkg-config freetype2 --cflags --libs
-IC:/msys64/mingw64/include/freetype2 -IC:/msys64/mingw64/include/harfbuzz -IC:/msys64/mingw64/include/glib-2.0 -IC:/msys64/mingw64/lib/glib-2.0/include -IC:/msys64/mingw64/include/libpng16 -lfreetype


  


  I can confirm the package is there :

  


  ls /mingw64/lib/pkgconfig/freetype2.pc
/mingw64/lib/pkgconfig/freetype2.pc


  


  Is there anything else I should be doing to compile a static version of ffmpeg with this package ?

  


• ffmpeg error SSL routines:ssl3_write_pending:bad write retry

  6 mai 2019, par boygiandi

  Recently, I see this error very often. Does anyone know what the error is and how to fix ? Please check full ffmpeg output here ( I already update openssl latest version from yum )

  ffmpeg version N-93715-gd0e4d04 Copyright (c) 2000-2019 the FFmpeg developers
  
    built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-36)
  
    configuration: --prefix= ....
  
  Input #0, mpegts, from '/tmp/4028813_video_0.ts':
  
    Duration: 00:04:08.19, start: 1.410111, bitrate: 1504 kb/s
  
    Program 1
  
      Metadata:
  
        service_name    : Service01
  
        service_provider: FFmpeg
  
      Stream #0:0[0x100]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(tv, bt709, progressive), 608x1080 [SAR 1:1 DAR 76:135], 30 fps, 30 tbr, 90k tbn, 60 tbc
  
      Stream #0:1[0x101](eng): Audio: aac (LC) ([15][0][0][0] / 0x000F), 44100 Hz, stereo, fltp, 121 kb/s
  
  [ sh: 2019-05-06  9:39:46 ]
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (copy)
  
    Stream #0:1 -> #0:1 (aac (native) -> aac (native))
  
  Press [q] to stop, [?] for help
  
  Output #0, flv, to 'rtmps://live-api-s.facebook.com:443/rtmp/289693778580218?s_bl=1&s_sw=0&s_vt=api-s&a=Abxj1aU9OTqh0RtS':
  
    Metadata:
  
      comment         : gs4028813
  
      encoder         : Lavf58.27.103
  
      Stream #0:0: Video: h264 (High) ([7][0][0][0] / 0x0007), yuv420p(tv, bt709, progressive), 608x1080 [SAR 1:1 DAR 76:135], q=2-31, 3000 kb/s, 30 fps, 30 tbr, 1k tbn, 30 tbc
  
      Stream #0:1(eng): Audio: aac (LC) ([10][0][0][0] / 0x000A), 44100 Hz, stereo, fltp, 128 kb/s
  
      Metadata:
  
        encoder         : Lavc58.52.100 aac
  
  [ sh: 2019-05-06  9:39:47 ]size=     169kB time=00:00:00.52 bitrate=2643.9kbits/s speed=1.03x
  
  ......
  
  [ sh: 2019-05-06  9:40:10 ]size=    3386kB time=00:00:22.72 bitrate=1220.7kbits/s speed=0.999x
  
  [ sh: 2019-05-06  9:40:11 ]size=    3842kB time=00:00:25.32 bitrate=1242.9kbits/s speed=   1x
  
  [tls @ 0x30ab3c0] error:00000000:lib(0):func(0):reason(0)82 bitrate=1247.3kbits/s speed=   1x
  
  av_interleaved_write_frame(): Input/output error
  
  [flv @ 0x3030f80] Failed to update header with correct duration.
  
  [flv @ 0x3030f80] Failed to update header with correct filesize.
  
  Error writing trailer of rtmps://live-api-s.facebook.com:443/rtmp/289693778580218?s_bl=1&s_sw=0&s_vt=api-s&a=Abxj1aU9OTqh0RtS: Input/output error
  
  frame=  776 fps= 30 q=-1.0 Lsize=    3932kB time=00:00:25.82 bitrate=1247.3kbits/s speed=   1x
  
  video:3530kB audio:406kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
  
  [tls @ 0x30ab3c0] error:1409F07F:SSL routines:ssl3_write_pending:bad write retry