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• FFMpeg Android Stagefright SIGSEGV error (h264 decode)

  19 avril 2013, par Sergey Ochkur

  I need to decode h264 file to YUV on Android 2.3+. As I understand I need to communicate with Stagefright, as it`s the only way now, after closing access with OpenMAX IL implementations. I have used FFmpeg 0.10 (and tried 0.9/0.9.1..) for this issue, compiled it with NDK7 (and also tried NDK6b with the same result) :

    ffmpeg version 0.10 Copyright (c) 2000-2012 the FFmpeg developers
  
    built on Jan 28 2012 14:42:37 with gcc 4.4.3
  
    configuration: --target-os=linux --cross-prefix=arm-linux-androideabi- --arch=arm --cpu=armv7-a --sysroot=/home/grid/Android/Android_NDK/platforms/android-9/arch-arm --disable-avdevice --disable-decoder=h264 --disable-decoder=h264_vdpau --enable-libstagefright-h264 --prefix=build/stagefright/armeabi-v7a --extra-cflags='-Iandroid-source/frameworks/base/include -Iandroid-source/system/core/include -Iandroid-source/frameworks/base/media/libstagefright -Iandroid-source/frameworks/base/include/media/stagefright/openmax -I/home/grid/Android/Android_NDK/sources/cxx-stl/system/include -march=armv7-a -mfloat-abi=softfp -mfpu=neon' --extra-ldflags='-Wl,--fix-cortex-a8 -Landroid-libs -Wl,-rpath-link,android-libs' --extra-cxxflags='-Wno-multichar -fno-exceptions -fno-rtti'
  
    libavutil      51. 34.101 / 51. 34.101
  
    libavcodec     53. 60.100 / 53. 60.100
  
    libavformat    53. 31.100 / 53. 31.100
  
    libavfilter     2. 60.100 /  2. 60.100
  
    libswscale      2.  1.100 /  2.  1.100
  
    libswresample   0.  6.100 /  0.  6.100
  
  Hyper fast Audio and Video encoder
  
  usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...

  Hardware : Beagleboard-Xm + TI Android 2.3 (official)

  So, entering next command give me error with 480p :
  ffmpeg -i /sdcard/Video/480p.mp4

  Stopped (signal) ffmpeg -i /sdcard/Video/480p.mp4

  Full Android "answer" from ADB Logcat :
  http://pastebin.com/76JLgtXX

  Android-developers, does anybody know what this error means and how to deal with it ?
  I tried to make DSP window bigger, but with no luck.
  Commands like "stagefright /sdcard/Video/480p.mp4" works fine.

  P.S. Additionally I found that on some bigger files (720p) Android answers next :

  [libstagefright_h264 @ 0xd479b0] Decode failed : 80000000

• FFMPEG shell execution with PHP - Unusual Error Because of GCC

  9 février 2012, par trocker

  I've been trying to debug the PHP Script, but the error message that I receive is very unusual.

  • CP, MV , WHOAMI - all these commands work with shell_exec
  • FFMPEG is installed
  • apache user - nobody with read write execute permission for nogroup to /usr/bin/ffmpeg.
  • FFMPEG working fine in terminal.
  • GCCPP is installed and GCC package is also installed.
  • Working with shell PHP command (brock@ubuntu $ php runthis.php)

  Code I ran :

  exec('ffmpeg -i beep.mp3 -ac 1 -ar 48000 -ab 128k audio1.mp3 2>&1', $out, $rv);
  
  echo "output is:\n".implode("\n", $out)."\nexit code:$rv\n";

  I get the following error :

  output is: ffmpeg: /opt/lampp/lib/libgcc_s.so.1: version `GCC_4.0.0' not found (required by /usr/lib/libdirac_encoder.so.0) ffmpeg: /opt/lampp/lib/libgcc_s.so.1: version `GCC_4.2.0' not found (required by /usr/lib/libstdc++.so.6) exit code:1

  Can someone help me out here ?

• How do I make a bash script continue part of a loop only if there is no error in the first step of the loop ?

  30 mars 2012, par Eli Greenberg

  I currently have a .command file for Mac that contains the following :

  for f in ~/Desktop/Uploads/*.flv
  
  do
  
       /usr/local/bin/ffmpeg -i "$f" -vcodec copy -acodec libfaac -ab 128k -ar 48000 -async 1 "${f%.*}".mp4
  
       rmtrash "$f"
  
  done

  How can I tell bash to only execute rmtrash if ffmpeg doesn't produce an error ?