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• Got error (input/output error) during tcp opening, FFMPEG

  1er juin 2012, par manutd

  I got error during tcp opening.
  Exactly to say, avformat_open_input always return -5 (input/output error).
  I looked into the source of the error code using gdb and found that getaddrinfo(in libavformat/tcp.c) function didn't work well as expected and returned the error value EIO.
  ffmpeg source have ff_getaddrinfo(in libavformat/os_support.c) function that is linked to getaddrinfo but when I run the program and my program encountered getaddrinfo, my program called other function in libc.so, dynamic library. I couldn't find which function is called.
  I gave the valid url to ffmpeg. The valid url is "http://stream.radiojavan.com/radiojavan".

  I compiled ffmpeg source for Android-use and used ffmpeg version 0.8.1
  This is my configuration.

  ./configure --target-os=linux \
  
      --prefix=$PREFIX \
  
      --enable-cross-compile \
  
      --extra-libs="-lgcc" \
  
      --arch=arm \
  
      --cc=$PREBUILT/bin/arm-linux-androideabi-gcc \
  
      --cross-prefix=$PREBUILT/bin/arm-linux-androideabi- \
  
      --nm=$PREBUILT/bin/arm-linux-androideabi-nm \
  
      --sysroot=$PLATFORM \
  
      --extra-cflags=" -O3 -fpic -DANDROID -DHAVE_SYS_UIO_H=1 -Dipv6mr_interface=ipv6mr_ifindex -fasm -Wno-psabi -fno-short-enums  -fno-strict-aliasing -finline-limit=300 $OPTIMIZE_CFLAGS " \
  
      --disable-shared \
  
      --enable-static \
  
      --extra-ldflags="-Wl,-rpath-link=$PLATFORM/usr/lib -L$PLATFORM/usr/lib -nostdlib -lc -lm -ldl -llog" \
  
      --disable-ffplay \
  
      --enable-zlib \

  Any advise would be appreciated.

• SDL_SetVideoMode fails

  17 avril 2013, par user1568549

  I am trying to buid a video player for android using libsdl for rendering.
  First i cross compiled sdl library for android platform.
  then ceated the jni layer for my sdl cpp file(already tested under ubuntu)
  but when i test it under android it fails(with segv11 signal) exactly at the beginning in the following instruction :
  this->screen = SDL_SetVideoMode(width, height, 0, 0) ;

  Does anyone know any workaround for this error.
  And is there any instructions or steps that i must follow in order to render SDL gui under android ?

• FFMPEG Covert HTML 5 Video NOT Working

  27 octobre 2012, par Brad

  I am using FFMPEG to convert a video to .mp4, ,ogg, .webm so that it may be viewed in all HTML5 capable browsers using the video tag. The problem is that I manage to convert the video to the 3 required formats but it does not display the video in the video tag, all I get is IE9 : red cross, Firefox : Grey cross, could it be a problem with the conversion or is it something to do with the way I am adding them to the source of the video tag. Here is what I have done :

  1. FFmpeg command line(s) :

     ffmpeg -i test.mp4 test.mp4
     
     ffmpeg -i test.mp4 test.ogg
     
     ffmpeg -i test.mp4 test.webm

  2. Here is the video tag :

     <video height="340" width="470" preload="true" autobuffer="true" controls="true">
     
         <source src="test.ogg" type="video/ogg"></source>
     
         <source src="test.mp4" type="video/mp4"></source>
     
     </video>

  3. Webconfig lines for the video support :

     <staticcontent>
     
         <mimemap fileextension=".mp4" mimetype="video/mp4"></mimemap>
     
         <mimemap fileextension=".ogg" mimetype="audio/ogg"></mimemap>
     
         <mimemap fileextension=".oga" mimetype="audio/ogg"></mimemap>
     
         <mimemap fileextension=".ogv" mimetype="video/ogg"></mimemap>
     
         <mimemap fileextension=".webm" mimetype="video/webm"></mimemap>
     
     </staticcontent>

  It would be great if someone could send me the required parameters for ffmpeg to convert the video to the 3 required formats and an example of how they setting the source in the video tag to display them again. And any other advise would be great like how to set the quality up etc when doing the conversion.

  Thanks in advance.