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• How to tell if ffmpeg errored or not ?

  12 juin 2015, par dvdmn

  The Situation :
  I’m using ffmpeg (via .net) to save video files. I can get the output from ffmpeg but I dont know how can I customize the output to have better result.

  My Problem :
  My problem is, there is no certain difference between successful and failed operation.

  last line of success :

  video:1006kB audio:134kB subtitle:0 global headers:0kB muxing overhead 0.943510%

  last lines from fails

  c :\x\test-9-8/30/2012-9:29:56-AM.mp4 : Invalid argument

  rtmp ://cdn.tv/cdn-live39/definst/stream01 : Unknown error occurred

  My Question :
  Is there an option (or command line parameter) to add some sort of return code (200 : success, 500 : error, etc)

  Thanks !

  PS : I saw this topic How to tell if ffmpeg errored ? but there is no number before/after last line. I think the last version doesnt have number anymore.

• FFMPEG preset is not found ? Linux Cent OS 6

  25 août 2012, par Darius

  I ran this command

  ffmpeg -i v-16418145218d8d7abdaabec46beb22ecffd2f5d1625.flv -y -acodec aac -ac 2 -ab 160k -vcodec libx264 -vpre iPod640 -vpre slow -f mp4 -threads 0 OUTPUT.mp4

  Got this response :

  [flv @ 0x10ff670]Estimating duration from bitrate, this may be inaccurate
  
  
  
  Seems stream 0 codec frame rate differs from container frame rate: 1000.00 (1000/1) -> 25.00 (25/1)
  
  Input #0, flv, from 'v-16418145218d8d7abdaabec46beb22ecffd2f5d1625.flv':
  
    Metadata:
  
      duration        : 14
  
      width           : 320
  
      height          : 240
  
      videodatarate   : 500
  
      framerate       : 25
  
      videocodecid    : 2
  
      audiodatarate   : 0
  
      audiosamplerate : 22050
  
      audiosamplesize : 16
  
      stereo          : true
  
      audiocodecid    : 2
  
      filesize        : 912970
  
    Duration: 00:00:13.92, start: 0.000000, bitrate: 576 kb/s
  
      Stream #0.0: Video: flv, yuv420p, 320x240, 512 kb/s, 25 tbr, 1k tbn, 1k tbc
  
      Stream #0.1: Audio: mp3, 22050 Hz, 2 channels, s16, 64 kb/s
  
  File for preset 'iPod640' not found

  But after doing a find, this is what I found.

  /usr/share/ffmpeg/libx264-ipod320.ffpreset
  
  /usr/share/ffmpeg/libx264-ipod640.ffpreset **** ITS HERE ******
  
  /usr/share/ffmpeg/libx264-lossless_fast.ffpreset
  
  /usr/share/ffmpeg/libx264-lossless_max.ffpreset
  
  /usr/share/ffmpeg/libx264-lossless_medium.ffpreset
  
  /usr/share/ffmpeg/libx264-lossless_slow.ffpreset
  
  /usr/share/ffmpeg/libx264-lossless_slower.ffpreset
  
  /usr/share/ffmpeg/libx264-lossless_ultrafast.ffpreset
  
  /usr/share/ffmpeg/libx264-main.ffpreset
  
  /usr/share/ffmpeg/libx264-max.ffpreset
  
  /usr/share/ffmpeg/libx264-medium.ffpreset
  
  /usr/share/ffmpeg/libx264-medium_firstpass.ffpreset
  
  /usr/share/ffmpeg/libx264-normal.ffpreset
  
  /usr/share/ffmpeg/libx264-placebo.ffpreset
  
  /usr/share/ffmpeg/libx264-placebo_firstpass.ffpreset
  
  /usr/share/ffmpeg/libx264-slow.ffpreset
  
  /usr/share/ffmpeg/libx264-slow_firstpass.ffpreset
  
  /usr/share/ffmpeg/libx264-slower.ffpreset

  I alos tried with -vpre libx264-ipod640 and still no luck. I get preset libx264-ipod640 is not found.... Do i have to enable presets somehow ? ffmpeg — enable presets ? or something ?

  ** EDIT : My ffmpeg version info **

  FFmpeg version 0.6.5, Copyright (c) 2000-2010 the FFmpeg developers
  
    built on Jan 29 2012 17:52:15 with gcc 4.4.5 20110214 (Red Hat 4.4.5-6)
  
    configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 --mandir=/usr/share/man --incdir=/usr/include --disable-avisynth --extra-cflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic -fPIC' --enable-avfilter --enable-avfilter-lavf --enable-libdc1394 --enable-libdirac --enable-libfaac --enable-libfaad --enable-libfaadbin --enable-libgsm --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libx264 --enable-gpl --enable-nonfree --enable-postproc --enable-pthreads --enable-shared --enable-swscale --enable-vdpau --enable-version3 --enable-x11grab
  
    libavutil     50.15. 1 / 50.15. 1
  
    libavcodec    52.72. 2 / 52.72. 2
  
    libavformat   52.64. 2 / 52.64. 2
  
    libavdevice   52. 2. 0 / 52. 2. 0
  
    libavfilter    1.19. 0 /  1.19. 0
  
    libswscale     0.11. 0 /  0.11. 0
  
    libpostproc   51. 2. 0 / 51. 2. 0
  
  FFmpeg 0.6.5
  
  libavutil     50.15. 1 / 50.15. 1
  
  libavcodec    52.72. 2 / 52.72. 2
  
  libavformat   52.64. 2 / 52.64. 2
  
  libavdevice   52. 2. 0 / 52. 2. 0
  
  libavfilter    1.19. 0 /  1.19. 0
  
  libswscale     0.11. 0 /  0.11. 0
  
  libpostproc   51. 2. 0 / 51. 2. 0

• no c compiler found libx264 build [closed]

  24 août 2012, par kerim yucel

  I have been trying to build ffmpeg for Android and I have managed to do so by using roman10's tutorial.

  However, I needed x264 and I enabled libx264 in the configurations but it wasn't able to find the library. A quick internet search led me to the answer that I have to build x264 seperately and include it to ffmpeg config by editing ExternalLibs flags.

  Currently I am using this script to build x264. Everything is fine except the fact that the error saying "No working C compiler is found" pops up. I have updated and installed build-essential and my gcc version is up to date.

  Any help will be appreciated. Thanks a lot.

  P.S. I am using ndk 4 just to make everything compatible with the tutorial link given above. I am running Ubuntu with VirtualBox from Windows 7.

  Edit : I have been trying this tutorial as well, I am getting the same error along with unknown options error for each configuration options.

  Another edit :
  I have tried this code and obtained the following.

  echo 'int main() return 0 ;' > main.c && arm-eabi-gcc main.c || echo $ ?

  /home/mehmet/Android_NDK_r4/build/prebuilt/linux-x86/arm-eabi-4.4.0/bin/../lib/gcc/arm-eabi/4.4.0/../../../../arm-eabi/bin/ld : crt0.o : No such file : No such file or directory collect2 : ld returned
  1 exit status 1

  I have checked the flags as well, flags seem ok or I can't see the faulty line. Above you may find the build script I am using.

  export ARM_ROOT=/home/mehmet/Android_NDK_r4
  
  export ARM_INC=$ARM_ROOT/build/platforms/android-8/arch-arm/usr/include/
  
  export ARM_LIB=$ARM_ROOT/build/platforms/android-8/arch-arm/usr/lib/
  
  export ARM_TOOL=$ARM_ROOT/build/prebuilt/linux-x86/arm-eabi-4.4.0
  
  export ARM_LIBO=$ARM_TOOL/lib/gcc/arm-eabi/4.4.0
  
  export PATH=$ARM_TOOL/bin:$PATH
  
  export PATH=$ARM_TOOL/arm-eabi/bin:$PATH
  
  export ARM_PRE=arm-eabi 
  
  ./configure --prefix=/sdcard/arm_and \
  
  --disable-gpac \
  
  --extra-cflags=" -I$ARM_INC -fPIC -DANDROID -fpic -mthumb-interwork -ffunction-sections -funwind-tables -fstack-prote
  
  ctor -fno-short-enums -D__ARM_ARCH_5__ -D__ARM_ARCH_5T__ -D__ARM_ARCH_5E__ -D__ARM_ARCH_5TE__ -Wno-psabi -march=armv5te -mtu
  
  ne=xscale -msoft-float -mthumb -Os -fomit-frame-pointer -fno-strict-aliasing -finline-limit=64 -DANDROID -Wa,--noexecstack -
  
  MMD -MP " \
  
  --extra-ldflags=" -nostdlib -Bdynamic -Wl,--no-undefined -Wl,-z,noexecstack -Wl,-z,nocopyreloc -Wl,-soname,/system
  
  /lib/libz.so -Wl,-rpath-link=$ARM_LIB,-dynamic-linker=/system/bin/linker -L$ARM_LIB -nostdlib $ARM_LIB/crtbegin_dynamic.o $ARM_LIB/crtend_android.o -lc -lm -ldl -lgcc " \
  
  --cross-prefix=${ARM_PRE}- \
  
  --disable-asm\
  
  --host=arm-linux \

  Third edit :

  Config.log gives the following.

  x264 configure script
  
  Command line options: "--prefix=/sdcard/arm_and" "--disable-gpac" "--extra-cflags=" "-I/home/mehmet/Android_NDK_r4/build/platforms/android-8/arch-arm/usr/include/" "-fPIC" "-DANDROID" "-fpic" "-mthumb-interwork" "-ffunction-sections" "-funwind-tables" "-fstack-prote" "ctor" "-fno-short-enums" "-D__ARM_ARCH_5__" "-D__ARM_ARCH_5T__" "-D__ARM_ARCH_5E__" "-D__ARM_ARCH_5TE__" "-Wno-psabi" "-march=armv5te" "-mtu" "ne=xscale" "-msoft-float" "-mthumb" "-Os" "-fomit-frame-pointer" "-fno-strict-aliasing" "-finline-limit=64" "-DANDROID" "-Wa,--noexecstack" "-" "MMD" "-MP" "--extra-ldflags=" "-nostdlib" "-Bdynamic" "-Wl,--no-undefined" "-Wl,-z,noexecstack" "-Wl,-z,nocopyreloc" "-Wl,-soname,/system" "/lib/libz.so" "-Wl,-rpath-link=/home/mehmet/Android_NDK_r4/build/platforms/android-8/arch-arm/usr/lib/,-dynamic-linker=/system/bin/linker" "-L/home/mehmet/Android_NDK_r4/build/platforms/android-8/arch-arm/usr/lib/" "-nostdlib" "/home/mehmet/Android_NDK_r4/build/platforms/android-8/arch-arm/usr/lib//crtbegin_dynamic.o" "/home/mehmet/Android_NDK_r4/build/platforms/android-8/arch-arm/usr/lib//crtend_android.o" "-lc" "-lm" "-ldl" "-lgcc" "--cross-prefix=arm-eabi-" "--disable-asm" "--host=arm-linux"
  
  
  
      checking whether arm-eabi-gcc works... no
  
      Failed commandline was:
  
      --------------------------------------------------
  
      arm-eabi-gcc conftest.c -Wall -I. -I$(SRCPATH) -I/home/mehmet/Android_NDK_r4/build/platforms/android-8/arch-arm/usr/include/ -fPIC -DANDROID -fpic -mthumb-interwork -ffunction-sections -funwind-tables -fstack-prote
  
      ctor -fno-short-enums -D__ARM_ARCH_5__ -D__ARM_ARCH_5T__ -D__ARM_ARCH_5E__ -D__ARM_ARCH_5TE__ -Wno-psabi -march=armv5te -mtu
  
      ne=xscale -msoft-float -mthumb -Os -fomit-frame-pointer -fno-strict-aliasing -finline-limit=64 -DANDROID -Wa,--noexecstack -
  
      MMD -MP -nostdlib -Bdynamic -Wl,--no-undefined -Wl,-z,noexecstack -Wl,-z,nocopyreloc -Wl,-soname,/system
  
      /lib/libz.so -Wl,-rpath-link=/home/mehmet/Android_NDK_r4/build/platforms/android-8/arch-arm/usr/lib/,-dynamic-linker=/system/bin/linker -L/home/mehmet/Android_NDK_r4/build/platforms/android-8/arch-arm/usr/lib/ -nostdlib /home/mehmet/Android_NDK_r4/build/platforms/android-8/arch-arm/usr/lib//crtbegin_dynamic.o /home/mehmet/Android_NDK_r4/build/platforms/android-8/arch-arm/usr/lib//crtend_android.o -lc -lm -ldl -lgcc -lm -o conftest
  
      arm-eabi-gcc: ctor: No such file or directory
  
      arm-eabi-gcc: ne=xscale: No such file or directory
  
      arm-eabi-gcc: MMD: No such file or directory
  
      arm-eabi-gcc: /lib/libz.so: No such file or directory
  
      cc1: error: unrecognized command line option "-mtu"
  
      cc1: error: unrecognized command line option "-fstack-prote"
  
      cc1: error: to generate dependencies you must specify either -M or -MM
  
      arm-eabi-gcc: -E or -x required when input is from standard input
  
      --------------------------------------------------
  
      Failed program was:
  
      --------------------------------------------------
  
      int main () { return 0; }
  
      --------------------------------------------------
  
      DIED: No working C compiler found.

  Last edit
  Problem solved. It was just a mistake related to typos. It works well now.