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• Couldn't open file with iFrameExtractor

  21 octobre 2012, par why

  I has built ffmpeg and iFrameExtractor with ios5.1 successful, But when I play the video, the log shows "Couldn't open file"

  // Register all formats and codecs
  
      avcodec_register_all();
  
      av_register_all();
  
  
  
      // Open video file
  
      if(avformat_open_input(&pFormatCtx, [moviePath cStringUsingEncoding:NSASCIIStringEncoding], NULL, NULL) != 0) {
  
          av_log(NULL, AV_LOG_ERROR, "Couldn't open file\n");
  
          goto initError;
  
      }

  This is my configure file for ffmpeg 0.11.1 :

  #!/bin/tcsh -f
  
  
  
  rm -rf compiled/*
  
  
  
  ./configure \
  
  --cc=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc \
  
  --as='/usr/local/bin/gas-preprocessor.pl /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc' \
  
  --sysroot=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.1.sdk \
  
  --target-os=darwin \
  
  --arch=arm \
  
  --cpu=cortex-a8 \
  
  --extra-cflags='-arch armv7' \
  
  --extra-ldflags='-arch armv7 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.1.sdk' \
  
  --prefix=compiled/armv7 \
  
  --enable-cross-compile \
  
  --enable-nonfree \
  
  --disable-armv5te \
  
  --disable-swscale-alpha \
  
  --disable-doc \
  
  --disable-ffmpeg \
  
  --disable-ffplay \
  
  --disable-ffprobe \
  
  --disable-ffserver \
  
  --enable-decoder=h264 \
  
  --enable-decoder=svq3 \
  
  --disable-asm \
  
  --disable-bzlib \
  
  --disable-gpl \
  
  --disable-shared \
  
  --enable-static \
  
  --disable-mmx \
  
  --disable-neon \
  
  --disable-decoders \
  
  --disable-muxers \
  
  --disable-demuxers \
  
  --disable-devices \
  
  --disable-parsers \
  
  --disable-encoders \
  
  --enable-protocols \
  
  --disable-filters \
  
  --disable-bsfs \
  
  --disable-postproc \
  
  --disable-debug 

• Unable to open symbol file. Error (20) : Not a directory

  29 octobre 2015, par grzebyk

  I am using ffmpeg library on android to stream live video feed. I have complied ffmpeg for android following roman10 instructions. The application is working correctly - it connects to the server, download the feed, transcode it, rescale it and displays on the device’s screen. However after a certain random moment the app crashes with Fatal signal 11 (SIGSEGV), code 1. I have used ndk-stack to find the source of the problem. Here is the crash dump :

  ********** Crash dump: **********
  
  Build fingerprint: 'google/hammerhead/hammerhead:5.0.1/LRX22C/1602158:user/release-keys'
  
  pid: 25241, tid: 25317, name: AsyncTask #5  >>> com.grzebyk.streamapp <<<
  
  signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x98e74c9c
  
  Stack frame #00 pc 00047924  /data/app/com.grzebyk.streamapp-1/lib/arm/libswscale-3.so: Unable to open symbol file /Users/grzebyk/Documents/New_Eclipse_Projects/StreamApp/libs/armeabi/libStreamApp.so/libswscale-3.so. Error (20): Not a directory
  
  Stack frame #01 pc 00034be8  /data/app/com.grzebyk.streamapp-1/lib/arm/libswscale-3.so (sws_scale+2648): Unable to open symbol file /Users/grzebyk/Documents/New_Eclipse_Projects/StreamApp/libs/armeabi/libStreamApp.so/libswscale-3.so. Error (20): Not a directory

  My native code is located in the StreamApp.cpp file. For me it looks like the app is trying to access libswscale-3.so (part of the ffmpeg) located inside the libStreamApp.so. This seems weird for me…

  All the ffmpeg’s .so files are located in /libs/armeabi/lib*.so. Naturally this includes the "missing" libswscale-3.so. The most disturbing thing is a fact that the app is working perfectly, but it crashes suddenly and it does not need any specific trigger to do so.

  What can I do to either put libswscale-3.so inside labStreamApp.so or to avoid referencing one .so file from another ?

• How to open MIL avi video file

  15 février 2017, par ahme0307

  I have some (AVI) videos with MIL(Matrox Imaging Library) codec. I have tried multiple codecs but i am not able to open.
  I have tried VLC, K-lite codecs,ffmpeg, here is the log file from k-Lite

  >##LAV Splitter Source (internal)::Video
  
  >
  
  >Media Type 0:
  
  >--------------------------
  
  >Video: MIL  256x256 5fps 489kbps
  
  >AM_MEDIA_TYPE: 
  
  >majortype: MEDIATYPE_Video {73646976-0000-0010-8000-00AA00389B71}
  
  >subtype: Unknown GUID Name {204C494D-0000-0010-8000-00AA00389B71}
  
  >formattype: FORMAT_VideoInfo {05589F80-C356-11CE-BF01-00AA0055595A}
  
  >bFixedSizeSamples: 0
  
  >bTemporalCompression: 1
  
  >lSampleSize: 1
  
  >cbFormat: 128
  
  >
  
  >VIDEOINFOHEADER:
  
  >rcSource: (0,0)-(256,256)
  
  >rcTarget: (0,0)-(256,256)
  
  >dwBitRate: 489508
  
  >dwBitErrorRate: 0
  
  >AvgTimePerFrame: 2000000
  
  >
  
  >BITMAPINFOHEADER:
  
  >biSize: 80
  
  >biWidth: 256
  
  >biHeight: 256
  
  >biPlanes: 1
  
  >biBitCount: 24
  
  >biCompression: MIL 
  
  >biSizeImage: 196608
  
  >biXPelsPerMeter: 0
  
  >biYPelsPerMeter: 0
  
  >biClrUsed: 0
  
  >biClrImportant: 0
  
  >
  
  >pbFormat:
  
  >
  
  >

  I also tried ffplay and here is the output
  

  The only software i came across that can open this video is from Matrox and it doesn’t allow exporting to other formats
  
  I appreciate if some one can direct me to codecs that can handle this videos. I would like convert to other video formats for further processing.

  Edit :
  I have attached sample video here
  sample

  I also tried the latest ffmpeg