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• compiling ffmpeg for iPhone SDK 4.3 [error : is unable to create an executable file.]

  12 février 2012, par user509020

  Like many others.. I'm compiling ffmpeg using gas preprocessor

  http://lists.mplayerhq.hu/pipermail/ffmpeg-devel/2009-October/077701.html

  This is my command

  ./configure --cc=/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/arm-apple-darwin10-gcc-4.2.1 --as='gas-preprocessor.pl /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/arm-apple-darwin10-gcc-4.2.1' --sysroot=/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS4.3.sdk --enable-cross-compile --target-os=darwin --arch=arm7 --cpu=cortex-a8 --enable-pic

  the error :

  /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/arm-apple-darwin10-gcc-4.2.1 is unable to create an executable file.
  
  C compiler test failed.

  I looked up the /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/ folder using Finder..
  arm-apple-darwin10-gcc-4.2.1 was there..

  Thanks,
  Suhas

• How to solve libx264 not found when building ffmpeg-with-libx264-enabled for android ?

  6 mars 2012, par newentry

  i am trying build android-ffmpeg-x264 downloaded from git. Link https://github.com/halfninja/android-ffmpeg-x264

  After running ./config_make_everything.sh i am getting following error

  ERROR : libx264 not found

  If you think configure made a mistake, make sure you are using the latest
  version from Git. If the latest version fails, report the problem to the
  ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
  Include the log file "config.log" produced by configure as this will help
  solving the problem.

  <pre>
  
  Makefile:1: config.mak: No such file or directory
  
  libavutil/Makefile:1: libavutil/../config.mak: No such file or directory
  
  libavutil/../subdir.mak:96: warning: overriding commands for target `libavutil/&#39;
  
  libavutil/../subdir.mak:26: warning: ignoring old commands for target `libavutil/&#39;
  
  libavutil/../subdir.mak:96: warning: overriding commands for target `libavutil/&#39;
  
  libavutil/../subdir.mak:96: warning: ignoring old commands for target `libavutil/&#39;
  
  
  
  tests/Makefile:44: /tests/fate.mak: No such file or directory
  
  tests/Makefile:45: /tests/fate2.mak: No such file or directory
  
  tests/Makefile:47: /tests/fate/aac.mak: No such file or directory
  
  tests/Makefile:48: /tests/fate/als.mak: No such file or directory
  
  tests/Makefile:49: /tests/fate/fft.mak: No such file or directory
  
  tests/Makefile:50: /tests/fate/h264.mak: No such file or directory
  
  tests/Makefile:51: /tests/fate/mp3.mak: No such file or directory
  
  tests/Makefile:52: /tests/fate/vorbis.mak: No such file or directory
  
  tests/Makefile:53: /tests/fate/vp8.mak: No such file or directory
  
  make: *** No rule to make target `/tests/fate/vp8.mak&#39;.  Stop.
  
  </pre>

  config.log contains

  <pre>
  
      ratecontrol.c:(.text+0xa400): undefined reference to `memset&#39;
  
  ratecontrol.c:(.text+0xa41c): undefined reference to `memset&#39;
  
  ratecontrol.c:(.text+0xa448): undefined reference to `__aeabi_l2d&#39;
  
  ratecontrol.c:(.text+0xa49c): undefined reference to `__aeabi_ldivmod&#39;
  
  ratecontrol.c:(.text+0xa4a0): undefined reference to `__aeabi_l2d&#39;
  
  ratecontrol.c:(.text+0xa4f8): undefined reference to `__aeabi_idivmod&#39;
  
  ratecontrol.c:(.text+0xa794): undefined reference to `__aeabi_l2d&#39;
  
  ../x264/libx264.a(set.o): In function `x264_validate_levels&#39;:
  
  set.c:(.text+0x200): undefined reference to `__aeabi_ldivmod&#39;
  
  set.c:(.text+0x334): undefined reference to `__aeabi_idiv&#39;
  
  ../x264/libx264.a(set.o): In function `x264_sei_version_write&#39;:
  
  set.c:(.text+0xeec): undefined reference to `strlen&#39;
  
  set.c:(.text+0xf10): undefined reference to `memcpy&#39;
  
  set.c:(.text+0xf3c): undefined reference to `sprintf&#39;
  
  set.c:(.text+0xf44): undefined reference to `strlen&#39;
  
  ../x264/libx264.a(set.o): In function `scaling_list_write&#39;:
  
  set.c:(.text+0x20b0): undefined reference to `memcmp&#39;
  
  set.c:(.text+0x2138): undefined reference to `memcmp&#39;
  
  set.c:(.text+0x2158): undefined reference to `memcmp&#39;
  
  ../x264/libx264.a(set.o): In function `x264_pps_write&#39;:
  
  set.c:(.text+0x5870): undefined reference to `memcmp&#39;
  
  set.c:(.text+0x5a7c): undefined reference to `memcmp&#39;
  
  ../x264/libx264.a(set.o):set.c:(.text+0x5a9c): more undefined references to `memcmp&#39; follow
  
  ../x264/libx264.a(macroblock.o): In function `x264_noise_reduction_update&#39;:
  
  macroblock.c:(.text+0xe10): undefined reference to `__aeabi_uldivmod&#39;
  
  ../x264/libx264.a(macroblock.o): In function `x264_predict_lossless_8x8_chroma&#39;:
  
  macroblock.c:(.text+0x3224): undefined reference to `memcpy&#39;
  
  macroblock.c:(.text+0x323c): undefined reference to `memcpy&#39;
  
  ../x264/libx264.a(cabac.o): In function `x264_macroblock_write_cabac&#39;:
  
  cabac.c:(.text+0x2c58): undefined reference to `__assert2&#39;
  
  cabac.c:(.text+0x2dd8): undefined reference to `__assert2&#39;
  
  cabac.c:(.text+0x2f80): undefined reference to `__assert2&#39;
  
  cabac.c:(.text+0x3020): undefined reference to `__assert2&#39;
  
  ../x264/libx264.a(rectangle.o): In function `x264_macroblock_cache_ref_1_1&#39;:
  
  rectangle.c:(.text+0x1e4): undefined reference to `__assert2&#39;
  
  ../x264/libx264.a(rectangle.o):rectangle.c:(.text+0x210): more undefined references to `__assert2&#39; follow
  
  ERROR: libx264 not found
  
  </pre>

  1.I am using fedora to build both ffmpeg and x264
  2.NDK r7

  Any solution to successfully build the code ?

• Revision 2bd6fe08f8 : Enable early termination in rd search This commit allows encoder to detect the

  3 juillet 2013, par Jingning Han

  Changed Paths :
   Modify /vp9/encoder/vp9_rdopt.c

  
  
  Enable early termination in rd search

  This commit allows encoder to detect the cumulative rate-distortion
  cost per transformed block inside a partition. If the cumulative
  rd cost is already above the best rd value, it terminates the rest
  operations and continue to next prediction mode test.

  It reduces the runtime of bus at target bit-rate 2000 from 308 second
  to 266 second, i.e., about 13% speed-up at no performance penalty.

  Change-Id : I5f15a3d8955d97031d5653006027866a00654e7a