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• Compilation of x264 with newest libswscale and libavformat

  4 décembre 2016, par pcroland

  Yesterday I wanted to compile x264 myself because the latest binary on videolan is compiled without libswscale : link

  If I just use

  ./configure --enable-static --enable-shared

  then the binary will compile libswscale 3.1.101 and libavformat 56.40.101 from the libswscale-dev and libavformat-dev packages. If I clone FFmpeg’s git and use

  ./configure --enable-static --enable-shared --extra-cflags="-I$HOME/FFmpeg"

  the binary will have the latest libswscale and libavformat, but it wont work :

  pc@pcroland:~/bin$ ./x264 --version
  
  x264 0.148.2744 b97ae06
  
  (libswscale 4.3.101)
  
  (libavformat 57.58.101)
  
  built on Dec  4 2016, gcc: 5.4.0 20160609
  
  x264 configuration: --bit-depth=8 --chroma-format=all
  
  libx264 configuration: --bit-depth=8 --chroma-format=all
  
  x264 license: GPL version 2 or later
  
  libswscale/libavformat license: GPL version 2 or later
  
  pc@pcroland:~/bin$ ./x264 --input-res 1920x1080 --fps 24000/1001 --vf resize:720,404,method=spline --output /home/pc/test.264 /home/pc/asd.264
  
  [h264 @ 0x1bc3ec0] Format h264 detected only with low score of 1, misdetection possible!
  
  [h264 @ 0x1bc3ec0] Could not find codec parameters for stream 0 (Video: h264, none): unspecified size
  
  Consider increasing the value for the 'analyzeduration' and 'probesize' options
  
  lavf [error]: could not find input stream info
  
  avs [error]: failed to load avisynth
  
  raw [info]: 1920x1080p 0:0 @ 24000/1001 fps (cfr)
  
  resize [info]: resizing to 720x404
  
  x264 [info]: using SAR=404/405
  
  x264 [info]: using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
  
  x264 [info]: profile High, level 3.0
  
  Bus error (core dumped)
  
  pc@pcroland:~/bin$

  How to reproduce the error :

  cd; git clone https://github.com/FFmpeg/FFmpeg; git clone http://git.videolan.org/git/x264.git; cd x264; ./configure --enable-static --enable-shared --extra-cflags="-I$HOME/FFmpeg" --bindir="$HOME/bin"; sudo make; sudo make install

  System : Ubuntu 16.04

• Mix 2 mp3 files with FFmpeg for adroid

  1er avril 2017, par Thankgod Richard

  I am developing something similar to a karaoke app. I have a sound file(beat) and a recorded file(voice) from android mediarecorder. I am trying to mix the two files to become one file that plays the same time. I have set up ffmpeg provided by writingminds and everything is working fine. I am not familiar with ffmpeg commands so searched for and got few commands that can achieve the task for me. This is the code i got :

    String files = "-i " + currentFile + " -i " + someFile.getAbsolutePath();
  
              String output = mFileName + "/recorded/test.mp3";
  
              String cmd = "ffmpeg "+files+
  
                      " -filter_complex \"aevalsrc=0:d=10[s1];[s1][1:a]concat=n=2:v=0:a=1[ac1];[0:a][ac1]amix[aout]\" -map [aout] -c:a libmp3lame " + output;

  But it not working. this is the error i got :

  04-01 12:09:26.598 21300-21300/com.shixels.thankgodrichard.mixer I/fpeg : ffmpeg version n3.0.1 Copyright (c) 2000-2016 the FFmpeg developers
  built with gcc 4.8 (GCC)
  configuration : —target-os=linux —cross-prefix=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- —arch=arm —cpu=cortex-a8 —enable-runtime-cpudetect —sysroot=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/sysroot —enable-pic —enable-libx264 —enable-libass —enable-libfreetype —enable-libfribidi —enable-libmp3lame —enable-fontconfig —enable-pthreads —disable-debug —disable-ffserver —enable-version3 —enable-hardcoded-tables —disable-ffplay —disable-ffprobe —enable-gpl —enable-yasm —disable-doc —disable-shared —enable-static —pkg-config=/home/vagrant/SourceCode/ffmpeg-android/ffmpeg-pkg-config —prefix=/home/vagrant/SourceCode/ffmpeg-android/build/armeabi-v7a —extra-cflags=’-I/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all’ —extra-ldflags=’-L/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie’ —extra-libs=’-lpng -lexpat -lm’ —extra-cxxflags=
  libavutil 55. 17.103 / 55. 17.103
  libavcodec 57. 24.102 / 57. 24.102
  libavformat 57. 25.100 / 57. 25.100
  libavdevice 57. 0.101 / 57. 0.101
  libavfilter 6. 31.100 / 6. 31.100
  libswscale 4. 0.100 / 4. 0.100
  libswresample 2. 0.101 / 2. 0.101
  libpostproc 54. 0.100 / 54. 0.100
  Output #0, mp3, to ’ffmpeg -i /storage/emulated/0/MyStudio/temps/1491044929409.mp3 -i /storage/emulated/0/temp.mp3 -filter_complex "aevalsrc=0:d=10[s1] ;[s1][1:a]concat=n=2:v=0:a=1[ac1] ;[0:a][ac1]amix[aout]" -map [aout] -c:a libmp3lame /storage/emulated/0/recorded/test.mp3’ :
  Output file #0 does not contain any stream
  04-01 12:09:26.599 21300-21300/com.shixels.thankgodrichard.mixer I/fpeg : finished

  I read some answers here saying it depends on the version of the ffmpeg your using. I am using the latest ffmpeg for android by writingminds.

• Error installing ffmpeg on Ubuntu 8.04 JeOS with Speex

  15 novembre 2011, par tubbo

  I'm having an issue installing ffmpeg with Speex support on Ubuntu 8.04 JeOS. After some wandering around in dependency hell I managed to secure the proper libspeex and ffmpeg versions, and it ./configured properly, but when I try to run make && make install, it fails with the following error :

  ffmpeg.c: In function ‘opt_recording_timestamp’:
  
  ffmpeg.c:3080: warning: dereferencing type-punned pointer will break strict-aliasing rules
  
  ffmpeg.c: In function ‘opt_input_file’:
  
  ffmpeg.c:3312: warning: ‘loop_input’ is deprecated (declared at libavformat/avformat.h:919)
  
  ffmpeg.c: In function ‘opt_output_file’:
  
  ffmpeg.c:4086: warning: ‘loop_output’ is deprecated (declared at libavformat/avformat.h:895)
  
  ffmpeg.c: In function ‘opt_map’:
  
  ffmpeg.c:2873: warning: ‘sync_stream_idx’ may be used uninitialized in this function
  
  CC  cmdutils.o
  
  LD  ffmpeg_g
  
  libavcodec/libavcodec.a(libspeexdec.o): In function `libspeex_decode_close':
  
  /home/tom/src/ffmpeg/libavcodec/libspeexdec.c:144: undefined reference to `speex_header_free'
  
  libavcodec/libavcodec.a(libspeexenc.o): In function `encode_init':
  
  /home/tom/src/ffmpeg/libavcodec/libspeexenc.c:224: undefined reference to `speex_header_free'
  
  /home/tom/src/ffmpeg/libavcodec/libspeexenc.c:215: undefined reference to `speex_header_free'
  
  collect2: ld returned 1 exit status
  
  make: *** [ffmpeg_g] Error 1

  I'm a complete noob to ffmpeg and speex, except for using the codec on Ventrilo back in the day. Can someone shed some light as to why this is happening ?