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• ffmpeg Windows stream desktop real time to web

  14 avril 2019, par ilapasle

  Hello i want to stream my Windows desktop in realtime with ffmpeg

  for capture desktop i use this code :

  ffmpeg.exe -f gdigrab -framerate 60 -i desktop output.mkv

  it’s work

  Now i not want to record video of my desktop but stream my desktop and view this in web browser.
  i need to export stream video in m3u8 file

  i have use this code :

  ffmpeg.exe -f gdigrab -framerate 60 -i desktop -c:v libx264 -crf 18 -maxrate 400k -bufsize 1835k -pix_fmt yuv420p -hls_time 10 -hls_wrap 6 output.m3u8

  in my current dir i have 6 ts file and output.m3u8 but i can not open output.m3u8 file, the file is empty why ?

  i want to read this file in web browser like this code :

      
  
  
  
  
  
  
  
  <div>
  
  <video autoplay="true" controls="controls" width="640" height="480">
  
  <source src="output.m3u8" type="application/x-mpegURL"></source>
  
  Your browser does not support HTML5 streaming!
  
  </video>
  
  </div>

  thanks for advance for your help

• FFMPEG codec "Error opening filters" error on Windows server

  12 février 2019, par Frank Nicklin

  Im using NReco Videoconvertor on and asp.net web service but its failing with the error

  ****Error : Cannot convert media : Error opening filters !****

  When testing on my local development PC Windows 10 VS2017 it works fine. If I manually run ffmpeg as this too work fine

  ffmpeg -i c:\tempfolder\5239.hevc c:\tempfolder\5239.mp4. 

  However if I try the same from my Windows 2016 Server I get a could not find codec parameters error :-

    D:\webservice\Bin>ffmpeg -i d:\video\1234.hevc d:\video\5225.mp4
  
  ffmpeg version N-56060-gbcd1c20 Copyright (c) 2000-2013 the FFmpeg developers
  
    built on Sep  6 2013 00:42:37 with gcc 4.7.3 (GCC)
  
    configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetype --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
  
    libavutil      52. 43.100 / 52. 43.100
  
    libavcodec     55. 31.101 / 55. 31.101
  
    libavformat    55. 16.101 / 55. 16.101
  
    libavdevice    55.  3.100 / 55.  3.100
  
    libavfilter     3. 83.104 /  3. 83.104
  
    libswscale      2.  5.100 /  2.  5.100
  
    libswresample   0. 17.103 /  0. 17.103
  
    libpostproc    52.  3.100 / 52.  3.100
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 028fa380] Could not find codec parameters for stream 0 (Video: none (hvc1 / 0x31637668), 352x288, 937 kb/s): unknown codec
  
  Consider increasing the value for the 'analyzeduration' and 'probesize' options
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'd:\video\1234.hevc':
  
    Metadata:
  
      major_brand     : qt
  
      minor_version   : 0
  
      compatible_brands: qt
  
      creation_time   : 2019-02-04 10:35:12
  
    Duration: 00:00:20.25, start: 0.000000, bitrate: 965 kb/s
  
      Stream #0:0(und): Video: none (hvc1 / 0x31637668), 352x288, 937 kb/s, 30.01 fps, 30 tbr, 600 tbn, 600 tbc (default)
  
      Metadata:
  
        rotate          : 90
  
        creation_time   : 2019-02-04 10:35:12
  
        handler_name    : Core Media Video
  
      Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 22050 Hz, mono, fltp, 23 kb/s (default)
  
      Metadata:
  
        creation_time   : 2019-02-04 10:35:12
  
        handler_name    : Core Media Audio

  Any thoughts please.

• How to build ffmpeg with android-ndk-r10d in windows

  8 février 2019, par hosseinAmini

  In my application user can selects several images and create movie(mp4) with those images, For this reason i want to use ffmpeg library.
  i have searched more than 2 days but did not find a good tutorial for build ffmpeg with ndk in windows.

  can any body describe me, how to do that ?(if you have any link, please share me)

  i used roman10 tutorial and this is what i do :
  1-i have decompressed "ffmpeg-2.6.2" folder into "android-ndk-r10d/sources".

  2-i have created "build_android.sh" file into "ffmpeg-2.6.2" folder and these are my build_android.sh codes :

  #!/bin/bash
  
  NDK=C:/Users/HAKHASIN/Desktop/android-ndk-r10d
  
  
  
  SYSROOT=$NDK/platforms/android-9/arch-arm/
  
  
  
  TOOLCHAIN=$NDK/toolchains/arm-linux-androideabi-4.8/prebuilt/windows-x86_64
  
  
  
  function build_one
  
  
  
  {
  
  
  
  ./configure \
  
  
  
  --prefix=$PREFIX \
  
  
  
  --enable-shared \
  
  
  
  --disable-static \
  
  
  
  --disable-doc \
  
  
  
  --disable-ffmpeg \
  
  
  
  --disable-ffplay \
  
  
  
  --disable-ffprobe \
  
  
  
  --disable-ffserver \
  
  
  
  --disable-avdevice \
  
  
  
  --disable-doc \
  
  
  
  --disable-symver \
  
  
  
  --cross-prefix=$TOOLCHAIN/bin/arm-linux-androideabi- \
  
  
  
  --target-os=linux \
  
  
  
  --arch=arm \
  
  
  
  --enable-cross-compile \
  
  
  
  --sysroot=$SYSROOT \
  
  
  
  --extra-cflags="-Os -fpic $ADDI_CFLAGS" \
  
  
  
  --extra-ldflags="$ADDI_LDFLAGS" \
  
  
  
  $ADDITIONAL_CONFIGURE_FLAG
  
  
  
  make clean
  
  
  
  make
  
  
  
  make install
  
  
  
  }
  
  
  
  CPU=arm
  
  
  
  PREFIX=$(pwd)/android/$CPU 
  
  
  
  ADDI_CFLAGS="-marm"
  
  
  
  build_one

  3- when write "sudo chmod +x build_android.sh" and "./build_android.sh" commands in cygwin, it not work correctly