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• How do I fix "undefined reference" errors in my Qt-Creator project while linking the ffmpeg library "libav" ?

  25 décembre 2022, par VCoder12345

  I'm currently trying to use the libav library from FFmpeg in my Qt-Creator project, but I get over a thousand "undefined reference to ..." errors and I have no idea what I'm doing wrong. The errors don't depend on the actual code, because I changed it a few times, but as long as I use methods of the library these errors occur.
I have also tried to run the code in Visual Studio and that worked.

  


  My project-file looks like this :

  


  QT -= gui

CONFIG += c++11 console
CONFIG -= app_bundle

# You can make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
INCLUDEPATH += D:\Programme\ffmpeg-source\ffmpeg-5.1.2\vs2019_build\include

SOURCES += \
    Main.cpp

# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target

QMAKE_CXXFLAGS += -D__STDC_CONSTANT_MACROS

LIBS += -lMfuuid
LIBS += -lStrmiids
LIBS += -lMfplat
LIBS += -lBcrypt
LIBS += -lSecur32
LIBS += -lWs2_32
LIBS += -pthread
LIBS += -L"D:\Programme\ffmpeg-source\ffmpeg-5.1.2\vs2019_build\lib"
LIBS += -lavdevice
LIBS += -lavfilter
LIBS += -lavformat
LIBS += -lavcodec
LIBS += -lswresample
LIBS += -lswscale
LIBS += -lavutil

HEADERS += \
    wrapper.h


  


  The library files are stored at D :\Programme\ffmpeg-source\ffmpeg-5.1.2\vs2019_build\lib. The errors I get when running the program look something like this (extract).

  


  :-1: Fehler: D:\Programme\ffmpeg-source\ffmpeg-5.1.2\vs2019_build\lib/libavformat.a(libavformat/aviobuf.o):(.text$mn+0x16): undefined reference to `__security_cookie'
:-1: Fehler: D:\Programme\ffmpeg-source\ffmpeg-5.1.2\vs2019_build\lib/libavformat.a(libavformat/aviobuf.o):(.xdata[$unwind$ff_read_string_to_bprint_overwrite]+0x1c): more undefined references to `__GSHandlerCheck' follow
:-1: Fehler: D:\Programme\ffmpeg-source\ffmpeg-5.1.2\vs2019_build\lib/libavformat.a(libavformat/4xm.o):(.text$mn+0x250): undefined reference to `__security_check_cookie'
:-1: Fehler: D:\Programme\ffmpeg-source\ffmpeg-5.1.2\vs2019_build\lib/libavformat.a(libavformat/yuv4mpegdec.o):(.text$mn+0x2fe): undefined reference to `sscanf'
:-1: Fehler: D:\Programme\ffmpeg-source\ffmpeg-5.1.2\vs2019_build\lib/libavformat.a(libavformat/yuv4mpegdec.o):(.text$mn+0x33f): undefined reference to `sscanf'
:-1: Fehler: D:\Programme\ffmpeg-source\ffmpeg-5.1.2\vs2019_build\lib/libavformat.a(libavformat/yuv4mpegdec.o):(.text$mn+0x65b): undefined reference to `__report_rangecheckfailure'
:-1: Fehler: D:\Programme\ffmpeg-source\ffmpeg-5.1.2\vs2019_build\lib/libavformat.a(libavformat/yuv4mpegdec.o):(.text$mn+0x18): undefined reference to `__security_cookie'
:-1: Fehler: D:\Programme\ffmpeg-source\ffmpeg-5.1.2\vs2019_build\lib/libavformat.a(libavformat/yuv4mpegdec.o):(.text$mn+0x97): undefined reference to `__security_check_cookie'
:-1: Fehler: D:\Programme\ffmpeg-source\ffmpeg-5.1.2\vs2019_build\lib/libavformat.a(libavformat/yuv4mpegdec.o):(.text$mn+0x14d): undefined reference to `__report_rangecheckfailure'
:-1: Fehler: D:\Programme\ffmpeg-source\ffmpeg-5.1.2\vs2019_build\lib/libavformat.a(libavformat/yuv4mpegdec.o):(.xdata[$unwind$yuv4_read_header]+0x20): undefined reference to `__GSHandlerCheck'
:-1: Fehler: D:\Programme\ffmpeg-source\ffmpeg-5.1.2\vs2019_build\lib/libavformat.a(libavformat/yuv4mpegdec.o):(.xdata[$unwind$yuv4_read_packet]+0x18): undefined reference to `__GSHandlerCheck'
:-1: Fehler: D:\Programme\ffmpeg-source\ffmpeg-5.1.2\vs2019_build\lib/libavformat.a(libavformat/xwma.o):(.text$mn+0x14): undefined reference to `__security_cookie'
:-1: Fehler: D:\Programme\ffmpeg-source\ffmpeg-5.1.2\vs2019_build\lib/libavformat.a(libavformat/xwma.o):(.text$mn+0x2e0): undefined reference to `__security_check_cookie'
...


  


  Is a library missing ? Am I including the lMfuuid, Strmiids, Mfplat, etc. the wrong way ? If you have any idea I would be very grateful. I'm really confused. I'm using the MinGW64 compiler.

  


• Error finding watermark path using ffmpeg in asp.net application

  27 août 2013, par irfanmcsd

  I am using .net ffmpeg wrapper to post watermark on videos. Posting watermark works fine if i execute ffmpeg command directly but failed to find suitable watermark png file location if command executed via asp.net application.

  here is sample ffmpeg command

  string RootPath = HttpContext.Current.Server.MapPath(HttpContext.Current.Request.ApplicationPath);
  
  _mhandler.FFMPEGPath = RootPath + "/ffmpeg_aug_2013/bin/ffmpeg.exe";
  
  _mhandler.InputPath = RootPath + "/contents/original";
  
  _mhandler.OutputPath = RootPath + "/contents/mp4";
  
  _mhandler.BackgroundProcessing = false;
  
  _mhandler.FileName = "wildlife.wmv";
  
  _mhandler.OutputFileName = "wildlife_ddd";
  
  string presetpath = RootPath + "/ffmpeg_aug_2013/presets/libx264-ipod640.ffpreset";
  
  _mhandler.OutputExtension = ".mp4";
  
  _mhandler.Parameters = "-s 640x380 -b:v 500k -bufsize 500k -b:a 128k -ar 44100 -c:v libx264 -vf \"movie = watermark.png [watermark]; [in][watermark] overlay=main_w-overlay_w-10:main_h-overlay_h-10 [out]\"";
  
  _mhandler.Parameters = _mhandler.Parameters + " -fpre \"" + presetpath + "\"";
  
  VideoInfo info =  _mhandler.Process();

  i tried direct code too

  string _out = "";
  
  Process _process = new Process();
  
  _process.StartInfo.UseShellExecute = false;
  
  _process.StartInfo.RedirectStandardInput = true;
  
  //_process.StartInfo.RedirectStandardOutput = true;
  
  _process.StartInfo.RedirectStandardError = true;
  
  _process.StartInfo.CreateNoWindow = true;
  
  _process.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
  
  _process.StartInfo.FileName = _ffmpegpath;
  
  _process.StartInfo.Arguments = cmd;
  
  if (_process.Start())
  
  {             
  
      _process.WaitForExit(ExitProcess);
  
      _out = _process.StandardError.ReadToEnd();
  
      if (!_process.HasExited)
  
        _process.Kill();
  
  
  
      return _out;
  
   }

  ffmpeg error output as

  FFMPEG Output:ffmpeg version N-55753-g88909be Copyright (c) 2000-2013
  the FFmpeg developers built on Aug 24 2013 21:40:51 with gcc 4.7.3
  (GCC) configuration : —enable-gpl —enable-version3
  —disable-w32threads —enable-avisynth —enable-bzlib —enable-fontconfig —enable-frei0r —enable-gnutls —enable-iconv —enable-libass —enable-libbluray —enable-libcaca —enable-libfreetype —enable-libgsm —enable-libilbc —enable-libmodplug —enable-libmp3lame —enable-libopencore-amrnb —enable-libopencore-amrwb —enable-libopenjpeg —enable-libopus —enable-librtmp —enable-libschroedinger —enable-libsoxr —enable-libspeex —enable-libtheora —enable-libtwolame —enable-libvo-aacenc —enable-libvo-amrwbenc —enable-libvorbis —enable-libvpx —enable-libx264 —enable-libxavs —enable-libxvid —enable-zlib libavutil 52. 42.100 / 52. 42.100 libavcodec 55. 29.100 / 55. 29.100 libavformat 55. 14.102 / 55. 14.102 libavdevice 55. 3.100
  / 55. 3.100 libavfilter 3. 82.102 / 3. 82.102 libswscale 2. 5.100 / 2.
  5.100 libswresample 0. 17.103 / 0. 17.103 libpostproc 52. 3.100 / 52. 3.100 [asf @ 024c9960] Stream #0 : not enough frames to estimate rate ; consider increasing probesize Guessed Channel Layout for Input Stream

  0.0 : stereo Input #0, asf, from 'F :\own\mhp_new/contents/original\wildlife.wmv' : Metadata :

  SfOriginalFPS : 299700 WMFSDKVersion : 11.0.6001.7000 WMFSDKNeeded :
  0.0.0.0000 comment : Footage : Small World Productions, Inc ; Tourism New Zealand | Producer : Gary F. Spradling | Music : Steve Ball title :
  Wildlife in HD copyright : © 2008 Microsoft Corporation IsVBR : 0
  DeviceConformanceTemplate : AP@L3 Duration : 00:00:30.09, start :
  0.000000, bitrate : 6977 kb/s Stream #0:0(eng) : Audio : wmav2 (a1[0][0] / 0x0161), 44100 Hz, stereo, fltp, 192 kb/s Stream

  0:1(eng) : Video : vc1 (Advanced) (WVC1 / 0x31435657), yuv420p, 1280x720, 5942 kb/s, 29.97 tbr, 1k tbn, 1k tbc [image2 @ 024c76e0]

  Could find no file with path 'watermark.png' and index in the range
  0-4 [Parsed_movie_0 @ 024c0540] Failed to avformat_open_input
  'watermark.png' [AVFilterGraph @ 024ca100] Error initializing filter
  'movie' with args 'watermark.png' Error opening filters ! Error Code= 0

  Error on point ( Could find no file with path 'watermark.png' ) shows watermark.png file not found.
  I place watermark.png file in the following locations but still can't found

  i : application root

  ii : root where actual aspx page located

  iii : ffmpeg root

  iv : ffmpeg/bin/

  I also used complete path but still can't detected.

  Note : if i use same ffmpeg command in php and place watermark.png on location where actual php page exist watermark properly detected and command executed properly, but same approach not working in asp.net

  Can any one help me where should i place watermark.png file so that script can access it.

• ANSI FATE

  24 août 2010, par Multimedia Mike — FATE Server

  The new FATE server is shaping up well. I think most of the old configurations have been migrated to the new server. I see one new compiler for x86_64– PathScale. It’s not faring particularly well at this point.

  New Tests
  As I write this, I noticed that there are now an even 700 tests, twice as many as the last time I trumpeted such a milestone. (It should be noted that the new FATE system finally breaks down the master regression suite into individual tests.) Thankfully, it’s no longer necessary to wait for me to create or edit tests (anyone with FFmpeg privileges can do this), nor is it necessary to keep up with this blog to know exactly what tests are new. Now, you can simply inspect the file history on tests/fate.mak and tests/fate2.mak (I think these 2 files are going to merge in the near future).

  Vitor, as of r24865 : “Add FATE test for ANSI/ASCII animation and TTY demuxer.” Eh ? What’s this about ? I admit I was completely removed from FFmpeg development for much of June and July so I could have missed a lot. Fortunately, I can check the file history to see which lines were added to make this test happen. And if FATE is exercising the test, you know exactly where the samples will live. Here’s this new decoder in action on the relevant sample :

  
  
  

  The file history fingers Suxen drol/Peter Ross for this handiwork. I might have guessed– the only person who is arguably more enamored with old, weird formats than even I. Now we wait for the day that YouTube has support for this format. I’m sure there are huge archives of these animations out there (and I wager that Trixter and Jason Scott know where).

  
  
  It’s an animation — it just keeps going
  

  Meanwhile, the FATE suite now encompasses a bunch of perceptual audio formats, thanks to the 1-off testing method and a few other techniques. These formats include Bink audio, WMA Pro, WMA voice, Vorbis, ATRAC1, ATRAC3, MS-GSM, AC3, E-AC3, NellyMoser, TrueSpeech, Intel Music Coder, QDM2, RealAudio Cooker, QCELP (just going down the source control log here), and others, no doubt.

  Then there’s this curious tidbit : “Add FATE test for WMV8 DRM”. The test spec is "fate-wmv8-drm: CMD = framecrc -cryptokey 137381538c84c068111902a59c5cf6c340247c39 -i $(SAMPLES)/wmv8/wmv_drm.wmv -an". I would still like to investigate FFmpeg’s cryptographic capabilities, which I suspect are moving in a direction to function as a complete SSL stack one day.

  New Platforms
  As for new platforms, the new FATE system finally allows testing on OS/2 (remember that classic ? It was “the totally cool way to run your computer”). Thanks to Dave Yeo for taking this on.

  Further, a new MIPS-based platform recently appeared on the FATE list. This one reports itself as running on 74kf CPU. Googling for this processor quickly brings up Mans’ post about the Popcorn Hour device. So, congratulations to him for getting the mundane box to serve a higher purpose. Perhaps one day, I’ll be able to do the same for that Belco Alpha-400 netbook.