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• ffmpeg compression commands to make diffrent video formats like youtube ?

  9 juillet 2022, par Sahll saharn

  I am trying to make a video streaming clone. suppose i got the raw video and wanted to compress in diff formats and store it into database so what command should i use to convert same video to multiple quality formats like in other streaming platforms 720p , 480p , 360p
suppose our raw file is input.mp4

  


• MP4 streaming with ffmpeg and ffserver

  7 janvier 2015, par bogdanioan.gabor

  I’m trying to make available on every desktop, but also on mobile devices and tablets, a live stream which comes from a camera.
  The live stream comes on RTSP protocol which implies that client should use a plugin, like VLC (which is’t available for all the platforms).
  I’ve transcoded the stream, using ffmpeg to mp4, over HTTP, in order to be able to use HTML 5’s video tag.
  The problem is that, from what I’ve read, mp4 format is not streamable.

  Is there a solution for "make it" streamable, like splitting it into chunks or something.
  Any tutorial will be appreciated.

• 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.