Newest 'libx264' Questions - Stack Overflow

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  • FFmpeg licence requirements when not distributing [closed]

    15 juin 2020, par Dodu

    I am making a website that uses FFmpeg, and by extension libx264. The website takes a video and adds filters etc to it, then serves that new video to the user.

    There are various answers about distributing libx264 (and others) as part of a commercial product such as:

    Can I use FFmpeg in a commercial product?

    Since I am generating content using the library, but not distributing the library itself, I'm not sure where this leaves me.

    Do I need a license to libraries? Or because there is no distribution, are licenses generally not needed?

    Any advice/links/other resources that may be helpful would be greatly appreciated.

  • FFMPEG licencing

    14 juin 2020, par Dodu

    I am making a website that uses FFMPEG, and by extention libx264. The website takes a video and adds filters etc to it, then serves that new video to the user.

    There are various answers about distributing libx264 (and others) as part of a comercial product such as:

    https://video.stackexchange.com/questions/14802/can-i-use-ffmpeg-in-a-commercial-product/14804#:~:text=Yes%2C%20you%20can%20use%20FFmpeg,LGPL)%20version%202.1%20or%20later.&text=So%2C%20yes%2C%20you%20can%20definitely,usage%2C%20distribution%2C%20and%20modification.

    Since I am generating content using the library, but not distributing the library itself, I'm not sure where this leaves me.

    Do I need a licence to libraries? Or because there is no distribution, are licences generally not needed?

    Any advice/links/other resources that may be helpful would be greatly appreciated.

    Thanks

    Dodu

  • Compiling ijkplayer x264 for android x86 & x86_64 Architecture , error : unknown type name 'v4si'

    4 juin 2020, par Lins Louis

    I'm trying to build this project https://github.com/simplepeng/ijkplayer-x264 but building x264 failing for x86 and x86_64 architectures . Link of the issue : https://github.com/simplepeng/ijkplayer-x264/issues/1

  • Compiling static libs of ffmpeg with x264 in Msys2 for Visual Studio, but libx264 is never found

    29 mai 2020, par Blake Senftner

    Having previously downloaded and compiled ffmpeg 4.2.2 to static libraries using MSYS2 and the Visual Studio 2015 x64 tool chain. I want to add the x264 codec from VLC/VideoLan, compiling that to a static library as well. However, running Configure for ffmpeg produces an error saying "libx264 not found."

    I built ffmpeg without VideoLAN's x264 at "/c/ThirdParty/opt/ffmpeg-4.2.2" with "make install" installing to "/c/ThirdParty/opt/ffmpeg-4.2.2/ffmpeg_build" .

    I am using the following steps to compile from source x264 and add it to the ffmpeg build using the same VS2015 tool chain:

    1. Launch an "VS2015 x64 Natice Tools Command Prompt"
    2. From that VS2015 command prompt, run "c:\msys64\msys2_shell.cmd -mingw64 -use-full-path"
    3. From inside the MSYS2 shell, run "cd /c/ThirdParty/opt"
    4. git clone http://git.videolan.org/git/x264.git
    5. cd x264
    6. CC=cl ./configure --enable-static --prefix=/c/ThirdParty/opt/ffmpeg-4.2.2/ffmpeg_build --disable-cli
    7. make
    8. make install
    9. cd ../ffmpeg-4.2.2

    10. PKG_CONFIG_PATH=/c/ThirdParty/opt/ffmpeg-4.2.2/ffmpeg_build/lib \ ./configure --prefix=./ffmpeg_build --toolchain=msvc --arch=x86_64 \ --target-os=win64 --extra-cflags=-MT --extra-cxxflags=-MT \ --extra-ldflags=-L/c/ThirdParty/opt/ffmpeg-4.2.2/ffmpeg_build/lib \ --enable-x86asm --enable-asm --enable-static --disable-shared \ --disable-debug --enable-gpl --enable-avresample --enable-libx264

    The steps work, compiling x264 fine, but the output for ffmpeg's Configure is "ERROR: libx264 not found".

    I have also tried the variation of using these two lines in place of steps 6 and 10 above:

    • CC=cl ./configure --enable-static --prefix=/usr/local --disable-cli
    • PKG_CONFIG_PATH=/usr/local/lib/pkgconfig:$PKG_CONFIG_PATH ./configure --prefix=./ffmpeg_build --toolchain=msvc --arch=x86_64 --target-os=win64 --extra-cflags=-MT --extra-libs=/usr/local/lib/libx264.lib --extra-cxxflags=-MT --enable-x86asm --enable-asm --enable-static --disable-shared --disable-debug --enable-gpl --enable-avresample --enable-libx264

    This version will get past Configure, where I am able to run "make", but the make fails with a series of unresolved X264_* functions while linking ffmpeg_g.exe, 14 unresolved functions in total. The errors at shown at the bottom, but first:

    When I look in /c/ThirdParty/opt/ffmpeg-4.2.2/ffmpeg_build/lib I see:

    $ ls -l ./ffmpeg_build/lib
total 50988
-rw-r--r-- 1 blake blake 27184250 May 11 16:29 libavcodec.a
-rw-r--r-- 1 blake blake   231304 May 11 16:29 libavdevice.a
-rw-r--r-- 1 blake blake  8574628 May 11 16:29 libavfilter.a
-rw-r--r-- 1 blake blake  8081930 May 11 16:29 libavformat.a
-rw-r--r-- 1 blake blake  1300118 May 11 16:29 libavutil.a
-rw-r--r-- 1 blake blake    61844 May 11 16:29 libpostproc.a
-rw-r--r-- 1 blake blake   348732 May 11 16:29 libswresample.a
-rw-r--r-- 1 blake blake  1316008 May 11 16:29 libswscale.a
-rw-r--r-- 1 blake blake  5086976 May 28 18:08 libx264.lib
drwxr-xr-x 1 blake blake        0 May 28 18:08 pkgconfig

    Likewise for /c/ThirdParty/opt/ffmpeg-4.2.2/ffmpeg_build/lib/pkgconfig:

    $ ls -l ./ffmpeg_build/lib/pkgconfig/
total 9
-rw-r--r-- 1 blake blake 353 May 11 16:29 libavcodec.pc
-rw-r--r-- 1 blake blake 554 May 11 16:29 libavdevice.pc
-rw-r--r-- 1 blake blake 449 May 11 16:29 libavfilter.pc
-rw-r--r-- 1 blake blake 393 May 11 16:29 libavformat.pc
-rw-r--r-- 1 blake blake 306 May 11 16:29 libavutil.pc
-rw-r--r-- 1 blake blake 317 May 11 16:29 libpostproc.pc
-rw-r--r-- 1 blake blake 322 May 11 16:29 libswresample.pc
-rw-r--r-- 1 blake blake 315 May 11 16:29 libswscale.pc
-rw-r--r-- 1 blake blake 300 May 28 18:08 x264.pc

    And looking in /usr/local/lib I see libx264.lib and the pkgconfig directory.

    The errors generated by my most recent attempts look like:

    LD      ffmpeg_g.exe
libavcodec.a(libx264.o) : error LNK2019: unresolved external symbol __imp_x264_param_default referenced in function X264_init
libavcodec.a(libx264.o) : error LNK2019: unresolved external symbol __imp_x264_param_parse referenced in function X264_init
libavcodec.a(libx264.o) : error LNK2019: unresolved external symbol __imp_x264_param_default_preset referenced in function X264_init
libavcodec.a(libx264.o) : error LNK2019: unresolved external symbol __imp_x264_param_apply_fastfirstpass referenced in function X264_init
libavcodec.a(libx264.o) : error LNK2019: unresolved external symbol __imp_x264_param_apply_profile referenced in function X264_init
libavcodec.a(libx264.o) : error LNK2019: unresolved external symbol __imp_x264_picture_init referenced in function X264_frame
libavcodec.a(libx264.o) : error LNK2019: unresolved external symbol __imp_x264_encoder_open_160 referenced in function X264_init
libavcodec.a(libx264.o) : error LNK2019: unresolved external symbol __imp_x264_encoder_reconfig referenced in function reconfig_encoder
libavcodec.a(libx264.o) : error LNK2019: unresolved external symbol __imp_x264_encoder_headers referenced in function X264_init
libavcodec.a(libx264.o) : error LNK2019: unresolved external symbol __imp_x264_encoder_encode referenced in function X264_frame
libavcodec.a(libx264.o) : error LNK2019: unresolved external symbol __imp_x264_encoder_close referenced in function X264_close
libavcodec.a(libx264.o) : error LNK2019: unresolved external symbol __imp_x264_encoder_delayed_frames referenced in function X264_frame
libavcodec.a(libx264.o) : error LNK2019: unresolved external symbol __imp_x264_encoder_maximum_delayed_frames referenced in function X264_init
libavcodec.a(libx264.o) : error LNK2019: unresolved external symbol __imp_x264_levels referenced in function X264_init
ffmpeg_g.exe : fatal error LNK1120: 14 unresolved externals
make: *** [Makefile:111: ffmpeg_g.exe] Error 96

    Maybe something wrong with the --extra-ldflags or --extra-libs options of ffmpeg's Configure, but after trying variations and google searching, I come asking you. Do you know what is wrong with this ffmpeg Configure line? Step 10, above.

  • What is this "fixing the build scripts" for compiling x264 ?

    29 mai 2020, par Blake Senftner

    I am trying to compile an all static build of source-customized ffmpeg libraries with the additional codecs from VideoLAN, such as their x264 codec. I am ultimately building for use in Windows with Visual Studio 2015 C++, so I am comparing a few compiling guides for my instructions.

    In the guide linked below (I located via Google searches) shows how to compile x264 with the VS2015 toolchain in MSYS2 without any special steps: https://gist.github.com/RangelReale/3e6392289d8ba1a52b6e70cdd7e10282

    While in this other guide, offered by the compiling guide pages from ffmpeg's web site, it includes steps for "fixing the build scripts" for x264: https://www.roxlu.com/2019/062/compiling-ffmpeg-with-x264-on-windows-10-using-msvc

    Problem being, when I "fix the build scripts" the configure script no longer finds a C compiler. Building with the first guide seems to work, but it was also written nearly 2 years ago, so perhaps the ffmpeg guide is doing some important fix? I don't know.

    I am:

    1. Running a "VS2015 x64 Native Tools Command Prompt"
    2. launching a pacman loaded msys2 shell via "msys2_shell.cmd -mingw64 -use-full-path"
    3. git cloning http://git.videolan.org/git/x264.git

    and at this point the two compiling guides vary, the first guide just cd's into x264 and runs configure while the other guide does some curl download of a config.guess file and then some sed manipulation of ./configure. Considering these instructions are "endorsed" by the ffmpeg site, I am left wondering what that is doing and how critical is it that these "special" steps cause my x264 configure to fail.

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