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• 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.

  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/'
  libavutil/../subdir.mak:26: warning: ignoring old commands for target `libavutil/'
  libavutil/../subdir.mak:96: warning: overriding commands for target `libavutil/'
  libavutil/../subdir.mak:96: warning: ignoring old commands for target `libavutil/'
  
  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'.  Stop.
  
  

  config.log contains

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

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

  Any solution to successfully build the code?

• Compiling ffmpeg with x264 for iOS 5 and iOS 5 simulator

  3 mars 2012, par alby

  I'm using Xcode 4.3.

  I have already collapsed, and I do this two days。

• How to speed ffmpeg-x264 encoder operation

  3 mars 2012, par newentry

  i have ported ffmpeg-x264 for android but the issue is encoder takes more time to encode a frame .It takes above 100ms to encode and cpu rises to 85% in some devices like LG and samsung.i am using the following avcodeccontext settings

  c->bit_rate = 256000;
  c->width = width;
  c->height = height;
  c->gop_size = 2;//75;
  c->pix_fmt = PIX_FMT_YUV420P;
  c->codec_type=AVMEDIA_TYPE_VIDEO;
  c->codec_id=CODEC_ID_H264;
  c->cqp=36;
  

  is there any other settings that makes the ffmpeg-encoding faster and utilizing less cpu percentage

• Compiling ffmpeg with x263 for iOS 5 and iOS 5 simulator

  3 mars 2012, par alby

  I'm using Xcode 4.3.

  I have already collapsed, and I do this two days。

• Retrieving metadata from x264 ?

  29 février 2012, par Blender

  I am trying to exctract the meta data from x264-encoded video files. First priority is to map the IDR-frames structure. The work seams to be harder than expected and I am trying to find command line applications that I can control from my code.

  Mp4box has an option "-dump-xml" or similar but I can't figure out how it works. Not much help available on the net on this option.

  Anyone who can give me a hint on this or any other alternative?

  Thank you.