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• FFmpeg segment desktop capture and send over http

  18 décembre 2014, par static

  I’m trying to capture the desktop video and segment it in order to send it over http to my node.js server, where I want to encode it to multiple bit-rates in order to serve it to clients for live streaming.
  The video has to be received in segments in order to create the manifest for live streaming, because i’m trying to use DASH, and to play the video on the client side using dash.js.

  The problem is that i can’t seem to be able to segment the video properly when i’m sending it to the server.

  This is the ffmpeg command that i’ve tried :

  ffmpeg -rtbufsize 1500M -f dshow -r 10 -i video="UScreenCapture"
  
  -vcodec libvpx -crf 10 -quality good -cpu-used 3 -b:v 1000k -qmin 10 -qmax 42  -
  
  threads 2 -vf scale=-1:480 -bufsize 1500 -flags -global_header -map 0 -f stream_
  
  segment -segment_time 2 -segment_format webm -  http://localhost:3000/stream/22

  I’ve managed to send it over http without segmenting the video, but on the server side i need to receive segments that have a duration of 2 seconds so that i can create the manifest.

  Also processing the video on the server side is also going to be done using ffmpeg(fluent ffmpeg module).
  I’m open to any suggestions.

• Pkg-config not found in android ndk error while compiling ffmpeg for android in MAC-OS

  29 avril 2014, par Shashank Agarwal

  I want to capture preview frames from camera preview and crop the frames to make it 480 X 480 resolution and then combine those frames to form a mp4 video using ffmpeg. I am able to get the preview frames, but i am not able to compile the ffmpeg binary to crop the frames. I follow this tutorial Roman guy script but at the starting of compilation i am getting pkg-config not found in my android-ndk. Please help how do i fix this problem . I am using MAC OS X

  Script to compile ffmpeg

  #!/bin/bash
  
  NDK=$HOME/Desktop/android-ndk-r9b
  
  SYSROOT=$NDK/platforms/android-19/arch-arm/
  
  TOOLCHAIN=$NDK/toolchains/arm-linux-androideabi-4.8/prebuilt/darwin-x86_64
  
  function build_one
  
   {
  
   ./configure \
  
  --prefix=$PREFIX \
  
  --enable-shared \
  
  --disable-static \
  
  --disable-doc \
  
  --disable-ffplay \
  
  --disable-ffprobe \
  
  --disable-ffserver \
  
  --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" \
  
   "build_android.sh" 32L, 799C

• How to install ffmpeg using xampp

  28 avril 2014, par Paul Ledger

  I am trying to install ffmpeg onto my localhost server. I have followed countless blogs and tutorials online form other people who are stuck with this same problem. I follow everything to the letter.

  1. Unzip the file
  2. Copy php_ffmpeg.exe to ext folder in php
  3. copy the rest to system 32

  As it says however when I do this I get this error when I start apache.

  

  Fair play but it is in the folder

  

  I also get this error as well :

  

  And Again, here it is :
  

  I have added the extention to my php.ini file

  extension=php_ffmpeg.dll

  The first time I go this to work I placed the ffmpeg.exe file onto my local host server and ran commands like this :

  $cmd = "$ffmpegpath -i $input -an -ss $sec -s $size $output";
  
  shell_exec($cmd);

  This works fine on my computer but not on an actual server. Could somebody offer some advice or guidene on where I have one wrong installing the extension or why running the .exe file on a lunix server with shell_exec doesn’t work