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• Error in configuring ffmpeg in Windows 8 , 5.3 PHP

  28 novembre 2014, par hitesh

  I am trying to configure ffmpeg using this tutorial -
  http://myownhomeserver.com/2012/12/how-to-install-ffmpeg-php-php-5-4-on-windows-8-xampp-1-8-1/
  but after I had done initial configuration, it is throwing error.

  I copied php_ffmpeg.dll in ext folder also added it in php.ini file extension=php_ffmpeg.dll
  copied other files to system32 folder. but it is throwing error while restarting apache. it is throwing below errow

  ---------------------------
  
  httpd.exe - System Error
  
  ---------------------------
  
  The program can't start because avcodec-52.dll is missing from your computer. Try reinstalling the program to fix this problem. 
  
  ---------------------------
  
  OK   
  
  ---------------------------

  I can see that above tutorial was for PHP 5.4 and above so I found this tutorial http://myownhomeserver.com/2012/02/how-to-install-ffmpeg-php-for-windows-apache-http-server/

  this is for PHP 5.3 but still it seems to show same error for me

  I cant understand what went wrong can some help me please.

• Gstreamer pipeline to scale down video before streaming

  20 novembre 2014, par r3dsm0k3

  Here is what Im trying to achieve.

  Im streaming from a Logitech C920 camera on beaglebone black with gstreamer. I have to save a copy of the video saved locally while it is streaming. I have achieved that with tee.
  Logitech camera gives h264 encoded video at a certain bitrate, mostly very high.

  Im streaming from a moving car on 3G, and the network is not good enough to send the stream to nginx-rtmp server Im using to re-distribute thus gives strong artifacts in the result.

  Im able to alter the bitrate of captured video using uvch264.
  But then, the locally saved video also would have lower bitrate.

  Is there anyway of capturing a higher bitrate 1080p video from the camera and sending a lower resolution, lower bitrate video the streaming server ?

  Following is the pipeline I have currently.

  gst-launch-1.0 -v -e uvch264src initial-bitrate=400000 average-bitrate=400000 iframe-period=3000  device=/dev/video0 name=src auto-start=true  src.vidsrc ! queue ! video/x-h264,width=1920,height=1080,framerate=30/1 ! h264parse ! flvmux streamable=true  name=flvmuxer ! queue ! tee name=t ! queue ! filesink location=/mnt/test.flv t. ! queue ! rtmpsink location=$SERVER/hls/$CAM1

  I could also try sending the higher bitrate video to a udpsink instead of rtmpsink and with another gstreamer process parallely and takes the data using a udpsink and probably post process/ re-encode and send to rtmp server.

  Im also limited by the processing speed BeagleBone has to do for encoding the videos. Currently Im trying for 1 camera and in the finished project I would like to have 2 cameras connected. Upload speed Im getting for the network is under 1Mbps.

  How do I solve this with less load on the BeagleBone ? Im very open to a new architecture as well.

• FFMPEG Android binary cannot find file in storage

  1er novembre 2014, par user2491598

  I am trying to run ffmpeg command on my Android using the ffmpeg binary library, but I keep getting an error that says :

  ffmpeg - i /storage/emulated/0/video3.mp4 /storage/emulated/0/output.mp4: No such file or directory

  The STDOUT I get back from the ProcessBuilder is

  0-31 19:43:20.576: I/FFMPEG(13838): stdErr= ffmpeg version 0.11.1 Copyright (c) 2000-2012 the FFmpeg developers
  
  10-31 19:43:20.576: I/FFMPEG(13838):   built on Nov 15 2013 00:50:10 with gcc 4.6 20120106 (prerelease)
  
  10-31 19:43:20.576: I/FFMPEG(13838):   configuration: --arch=arm --cpu=cortex-a8 --target-os=linux --enable-runtime-cpudetect --enable-small --prefix=/data/data/info.guardianproject.ffmpeg/app_opt --enable-pic --disable-shared --enable-static --cross-prefix=/home/n8fr8/dev/android/ndk//toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86_64/bin/arm-linux-androideabi- --sysroot=/home/n8fr8/dev/android/ndk//platforms/android-3/arch-arm --extra-cflags='-I../x264 -mfloat-abi=softfp -mfpu=neon' --extra-ldflags=-L../x264 --enable-version3 --enable-gpl --disable-doc --enable-yasm --enable-decoders --enable-encoders --enable-muxers --enable-demuxers --enable-parsers --enable-protocols --enable-filters --enable-avresample --enable-libfreetype --disable-indevs --enable-indev=lavfi --disable-outdevs --enable-hwaccels --enable-ffmpeg --disable-ffplay --disable-ffprobe --disable-ffserver --disable-network --enable-libx264 --enable-zlib --enable-muxer=md5
  
  10-31 19:43:20.576: I/FFMPEG(13838):   libavutil      51. 54.100 / 51. 54.100
  
  10-31 19:43:20.576: I/FFMPEG(13838):   libavcodec     54. 23.100 / 54. 23.100
  
  10-31 19:43:20.576: I/FFMPEG(13838):   libavformat    54.  6.100 / 54.  6.100
  
  10-31 19:43:20.576: I/FFMPEG(13838):   libavdevice    54.  0.100 / 54.  0.100
  
  10-31 19:43:20.576: I/FFMPEG(13838):   libavfilter     2. 77.100 /  2. 77.100
  
  10-31 19:43:20.576: I/FFMPEG(13838):   libswscale      2.  1.100 /  2.  1.100
  
  10-31 19:43:20.576: I/FFMPEG(13838):   libswresample   0. 15.100 /  0. 15.100
  
  10-31 19:43:20.576: I/FFMPEG(13838):   libpostproc    52.  0.100 / 52.  0.100
  
  10-31 19:43:20.576: I/FFMPEG(13838): ffmpeg - i /storage/emulated/0/video3.mp4 /storage/emulated/0/output.mp4: No such file or directory

  Please keep in mind that the video file do exist on my device in that exact directory and I also have read permissions in my AndroidManifest.xml

  Please help !!!!