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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

• Manually feeding x264 with my own motion data ?

  6 septembre 2011, par ldoogy

  I am trying to encode a stream using x264 (by feeding individual images), but what's unusual is that I already have some motion information for my frames. I know exactly which areas have been modified in each frame, and I know where motion has occurred in the frame.

  Is there a way to feed x264 my own motion information ? I'd like to give it motion vectors for given areas in the frame, and somehow tell it that certain areas in the frame are guaranteed to not have had any motion in them.

  I think this might significantly improve the performance of the encoding (because I'm allowing the codec to completely skip the motion estimation phase), and should also somewhat increase quality in cases where the encoder's motion estimation algos might have missed the motion that actually occurred.

  Do I need to modify the encoder in order to do this, or is this supported in the existing API ?

• x264 CLI crash while encoding [migrated]

  28 août 2011, par Ithilion

  i'm having hard time with x264 CLI encoding.
  I'm trying to encode a blu-ray source (8gb .m2ts file) into a mp4 video, but x264.exe keeps always crashing at approximately 20% progress.

  This is the Avisynth script i'm using :

  Source="C:\Ithilion\Temp\Editing\Anime\input.m2ts"
  
  V=FFVideoSource(Source,fpsnum=24000,fpsden=1001)
  
  A=FFAudioSource(Source)
  
  AudioDub(V,A)
  
  
  
  GradFun2DBmod(str=1.2)
  
  
  
  aWarpSharp2(depth=20)
  
  LimitedSharpenFaster(strength=255)
  
  
  
  TextSub("C:\Ithilion\Temp\Editing\Anime\subs1.ass")
  
  TextSub("C:\Ithilion\Temp\Editing\Anime\subs2.ass")

  These are the commands i'm using for the encode :

  x264 --profile high10 --level 5.1 --crf 23 --bframes 10 --b-adapt 2 --direct auto
  
  --me umh --merange 24 --partitions all --rc-lookahead 60 --ref 16 --subme 10 
  
  --trellis 2 --deblock -2:-2 --psy-rd 0.6:0.0 --aq-strength 1 --acodec aac 
  
  --abitrate 256 --output "output.mp4" "input.avs"

  This is the error i get :

  Name of the application that generated the error: x264.exe, Version: 0.0.0.0, time stamp: 0x4e427829
  
  Module name that generated the error: KERNELBASE.dll, Version: 6.1.7601.17651, time stamp: 0x4e211319
  
  Exception Code: 0xc00000fd
  
  Fault offset 0x0000b9bc
  
  Process ID that generated the error: 0xaac
  
  Start time of the application that generated the error: 0x01cc64e7f962548a
  
  Path to the application that generated the error: C:\Ithilion\Temp\Editing\x264\x264.exe
  
  Path of the module that generated the error: C:\Windows\syswow64\KERNELBASE.dll
  
  ID alert: a702ec4e-d0e7-11e0-b4d3-0023547ccfc5

  I'm running Win7 64 on a Q9400 @3200mHz with 4 GB RAM

  Thanks in advance for your support
  Best regards